1.1 Purpose and Scope
The purpose
of this Data Product SIS is to provide users of the Lunar Exploration Neutron
Detector (LEND) Reduced Data Record (RDR) (NASA Level 1) data product with a
detailed description of the product and a description of how it was generated,
including data sources and destinations. The RDR product contains calibrated and
averaged neutron spectra from the Lunar Reconnaissance Orbiter (LRO) LEND. This
SIS is intended to provide enough information to enable users to read and understand
the data product. The users for whom this SIS is intended are the scientists who
will analyze the data, including those associated with the 2008 Lunar
Reconnaissance Orbiter and those in the general planetary science community.
This Data
Product SIS describes how the RDR data product is acquired by the LEND instrument,
and how it is processed, formatted, labeled, and uniquely identified. The document
discusses standards used in generating the product and software that may be used
to access the product. The data product structure and organization is described
in sufficient detail to enable a user to read the product. Finally, an example
of a product label is provided.
This Data
Product SIS is responsive to the following LRO documents:
- Lunar
Reconnaissance Orbiter Project Data Management and Archive Plan,
431-PLAN-00182
- Lunar
Reconnaissance
Orbiter Project, LEND Instrument Team Data Management and Archive Plan.
- Experiment LEND of NASA
Lunar Reconnaissance Orbiter for high resolution mapping of neutron
emission of the Moon, Mitrofanov et al., Astrobiology 2008 Vol. 8 Num
4 793 - 804.
- Lunar Exploration Neutron
Detector EDR (NASA Level 0) Software Interface Specification, July 24,
2007.
- Data processing of LEND
collimated sensors, Boynton et al., June 8, 2016.
This SIS is
also consistent with the following Planetary Data System documents:
- Planetary
Data System Data Preparation Workbook, February 1, 1995, Version 3.1, JPL
D-7669, Part 1.
- Planetary
Data System Data Standards Reference - Revised, June 15, 2001, Version
3.4, JPL D-7669, Part 2.
- Planetary
Science Data Dictionary Document, July 15, 1996, Planetary Data System,
JPL D-7116, Rev. D.
Finally,
this SIS is meant to be consistent with the contract negotiated between the 2008
Lunar Reconnaissance Orbiter and the LEND Principal Investigator (PI) in which
reduced data records and documentation are explicitly defined as deliverable
products.
The LEND
Archive Volume SIS describes how the data products specified by this document
will be made available through the PDS. The LEND RDR data products are
dependent on the LEND EDR data products as specified in Applicable Document
[4]. Any changes to the EDR data products will necessitate changes in this
document and in the RDR data products.
The Lunar
Exploration Neutron Detector, LEND, was designed and built by P.I. Igor
Mitrofanov at the Russian Space Institute for incorporation into NASA’s Lunar
Reconnaissance Orbiter (LRO) as a large orbital neutron telescope for
mapping the Moon’s neutron albedo. LEND is the follow-on instrument from the High Energy Neutron
Detector (HEND) onboard Mars Odyssey, although LEND incorporates a set of
collimated detectors to improve spatial resolution. The methods and
procedures of LEND data processing and analysis are based on existing
procedures that have been developed for analysis of HEND data. The following
paragraphs will briefly describe the LEND instrument.
LEND has
eight 3He sensors for detecting thermal and epithermal neutrons.
Four of the 3He sensors un-collimated and four are collimated. As
seen in Figure 2.1. LEND Instrument Overview, external sensors
STN1-3 (Sensor Thermal Neutrons) and SETN (Sensor EpiThermal Neutrons) are the
un-collimated sensors that detect thermal and epithermal neutrons. STN-3 and
SETN both have open fields of view. The combination of these two sensors will
allow the measurement of local density of thermal and epithermal neutrons
around the spacecraft. STN 1 and 2 are located near the midpoint of the
instrument and have the thick mass of the collimation module just between them.
For sensors on the +X and -X sides, the collimation material absorbs all
external particles coming from directions –X and +X, respectively. The velocity
vector of LRO will correspond to one of these directions: therefore, sensors STN
1 and 2 will detect neutrons with velocities (Vn + Vorb)
and (Vn – Vorb), respectively, and will operate as a
Doppler filter to separate the flux of external neutrons from the Moon from the
local spacecraft background. The full set of four sensors, SETN and STN 1-3,
will provide the data to characterize the neutron component of lunar radiation
background at the altitude of LRO separately from the neutron component of
local background produced by LRO itself.
The collimated sensors of epithermal neutrons, CSETN1-4, are also 3He
counters, that are installed inside the collimating module, which effectively
absorbs external neutrons outside of instrument Field of View. Absorbing
neutrons is very difficult; one of the best absorbing materials is 10B,
and its absorption efficiency becomes much higher when neutrons are slower. The
LEND collimators have external layers of polyethylene for moderation of
impacting neutrons and internal layers of 10B for their efficiency.
These sensors are also enclosed by Cd shields that absorb all neutrons with
energies below ~0.4 eV, which mainly correspond to thermal neutrons. The neutron
collimator provides the instrument Field of View (FOV): epithermal neutrons of
direct flux inside the FOV are recorded by the detector, while the majority of neutrons outside the FOV are absorbed by
the collimator. This collimation technique provides mapping of epithermal
neutrons from the Moon’s surface with the horizontal resolution of 5 km for LRO
at an altitude of 50 km.
The final LEND
sensor is the Sensor for High Energy Neutrons (SHEN), which is a stilbene
scintillator that produces a flash of light each time a high energy neutron in
the energy range 0.3 – 15.0 MeV collides with a hydrogen nucleus and creates a
recoil proton. Special shape-sensitive electronics distinguish proton counts
from electron counts, and an active anti-coincidence shield eliminates external
charged particles. This sensor is installed inside the central hole of the collimation
unit, and its Field of View corresponds to 40°
(HWHM). The SHEN sensor outputs data in 16 energy channels from 300 keV to more
than 15 MeV, and is the source of the SC1-3 spectra.
LEND operates
autonomously, collecting data throughout the lunar orbit. LEND generates
approximately 0.26 Gbits of measurement data per day. In order to perform early
calibration measurements, LEND became active shortly after the first mid course
correction (MCC) burn. Operationally, LEND is simple and has only three
instrument modes: MEASUREMENTS, STAND-BY, and OFF. While in MEASUREMENTS mode,
instrument electronics and detector high voltage are both 'on' and the
instrument generates measurement and housekeeping data. In STAND-BY mode,
instrument electronics are 'on', detector high voltage is 'off', and only
housekeeping data are generated. While in OFF mode, the instrument is 'off',
the instrument external heater is 'on', and only external temperature data are
generated.
For further information about the
LEND instrument and the LEND experiment please see Applicable Document [3].
The LEND RDR data
product contains six types of data.
LEND_CONVERTED_HK_DATA Reduced
housekeeping data.
LEND_RECTIFIED_SCIENCE_DATA Temporally
and spatially rectified science data.
DERIVED_LEND_DATA Background
corrected Neutron Data
EXTENDED_DERIVED_LEND_DATA Background
corrected Neutron Data
AVERAGED_LEND_COUNTS_DATA Normalized,
averaged Neuron Data
AVERAGED_LEND_FLUX_DATA Normalized,
averaged Neuron Data
LEND_CONVERTED_HK_DATA
(CHK) is a time-series of Neutron Detector engineering and housekeeping data
that has been reduced to yield data in engineering units.
LEND_RECTIFIED_SCIENCE_DATA
(RSCI) is a time-series of Neutron Detector science data that includes timing
and spatial information associated with the data collection interval.
DERIVED_LEND_DATA
(DLD) is a time series of Neutron Detector science data that has been processed
to account for instrument warm up and efficiency saturation effects, variation
of Galactic Cosmic Ray (GCR) flux, clearance for Solar Particle Events (SPE),
separation between charged particles and neutrons, temperature and altitude
corrections.
EXTENDED_DERIVED_LEND_DATA
(DLX) is a time series of Neutron Detector science data that contains
supplemental values useful for interpretation of DLD data, including
uncertainties for neutron counts on each detector.
AVERAGED_LEND_COUNTS_DATA
(ALD) is Neutron Detector science data that has been processed by normalizing
and averaging derived data to yield science data in a counts/second format for
each Lunar map pixel.
AVERAGED_LEND_FLUX_DATA
(ALF) is Neutron Detector science data that has been processed by normalizing
and averaging derived data to yield orbital epithermal and fast neutron fluxes.
The
specific data formats for the RDR products are described in Section 3 with Detailed
Data Product Specifications on page 15. Data volume is a
function of collection rate as parameterized by collection interval. The
nominal collection interval is 1 second or 86400 records per day per file. Collection
Interval can be changed in the middle of a time series file, which can be
determined by noting the difference between record timestamps. There is one RSCI
and Derived record for each LEND EDR Science data record. Since the ALD records
are averaged there are far fewer Averaged records than Derived records.
The LEND RDR
data products contain individual spatially and temporally rectified or derived LEND
spectra and associated data as well as normalized and averaged LEND spectra corresponding
to NASA Processing Level 1B (CODMAC Level 4) and 1C (CODMAC Level 5),
respectively. See Applicable Document [1] for a full explanation of NASA and
CODMAC data processing levels.
A process
termed “ingest” occurs on the LEND Science Operations Center computer which receives
data from the LRO Mission Operation Center. The ingest process verifies the
consistency of the data, and sorts it into the relevant database tables. As the
data is sorted, the timing and spatial information is associated with the data
for each collection interval. This is done by a sub-routine of the “ingest”
process that calls the appropriate SPICE kernel information for the time period
of interest. The “ingest” process also calls a number of database trigger
functions to calculate engineering unit values from the raw housekeeping DN
values as the housekeeping data are sorted into the database. See Appendix 5.2 Engineering Conversions for the conversion equations for each type of housekeeping data.
Once the science and housekeeping data have been stored, the
LEND_CONVERTED_HK_DATA and the LEND_RECTIFIED_SCIENCE_DATA are produced. In the
event of an error whose fix changes released data, it is expected the data will
be reprocessed by the revised software and made available.
2.3.2.1. DERIVED_LEND_DATA and EXTENDED_DERIVED_LEND_DATA
No spacecraft background
subtraction is made for this data set. The time series measurements of each of
the un-collimated LEND neutron signals are corrected for altitude.
Once the altitude
correction has been made to the data, it is examined to determine if data
collection occurred during a solar particle event. Solar particle events (SPEs)
significantly influence the LEND detectors’ counting rates, often increasing
the counting rates by several orders of magnitude. Any data collected during
times of intense solar activity are flagged and excluded from further routine
data processing. The exclusion of data collected during SPEs is based on visual
inspection of the data combined with information from Earth observation of
solar activity (i.e. GOES spacecraft). The visual inspections and comparisons with
other data sets do not guarantee that every collection interval that has been
influenced by heightened solar activity has been excluded. It is possible that
weak traces of SPEs may remain in the data. Collection intervals with
significant solar activity are marked with a “1” in the SUN_ACTIVITY portion of
the DERIVED_LEND_DATA record.
Measurements obtained
with the nadir angle of the spacecraft greater than 1.9° are ignored, and a
value of -1 is assigned to its count rate in the corresponding derived record.
In addition, raw counts
from each of the detectors are examined for ‘outlier’ values, which could be
produced either due to some micro-discharge in the HV circuit of a counter, or
due to some corruptions in the instrument memory. Measurements are defined as
outlier events based upon a specific count threshold for each detector (11 cps
for CSETN1-4; 30 cps for SETN; and 49 cps for STN1-3), and a value of -1 is
assigned to its count rate in the corresponding derived record.
There may be times when
a single or multiple detectors do not have high voltage applied. During these
periods the count for that detector will be assigned a value of -1 and that
data should be disregarded. This does not have an effect on the other remaining
detectors.
Data is also corrected
for instrument warm-up, separation of charged particles and neutrons, and
variation of galactic cosmic rays. For complete details refer to (data
reduction paper, or Applicable document 5).
2.3.2.2 AVERAGED_LEND_COUNTS_DATA and AVERAGED_LEND_FLUX_DATA
Background subtracted, non-SPE
influenced time series data are used to create temporally and spatially binned
counting rate data for each of the five un-collimated LEND neutron signals and
one for the four collimated sensors. The creation of spatially averaged
counting rates requires the time series collection interval data to be
distributed between the .5-degree x .5-degree latitude longitude map cells. The
time series data distribution is accomplished by registering each collection
interval to the projection of the spacecraft orbital trajectory on the surface
of the Moon. The spacecraft trajectory projection during a single ~ 1 second
collection interval is fit with a straight line. The projected straight line
spacecraft trajectory is used to determine the fraction (k1, k2, k3) of the data collection interval
that resides inside each .5x.5 degree map cell. Equation 2 describes how data
collection intervals are split along the length of the trajectory:
Eq.
2
Where
li - length of a part of trajectory
projection which belongs to i
-th map cell,
L – total length of trajectory
projection on the Lunar surface.
The fractions ki of each collection interval within
a given map cell are used to calculate the total number of counts and
collection time in each map cell. The following equations describe the process
in detail:
Eq. 3a., 3b. and 3c
where
Sj – count in j-th collection interval calculated
from Equation 1,
tj – duration of j-th collection interval,
kij – fraction of j-th collection interval length in i-th map cell,
n – total number of LEND collection
intervals within the temporal interval,
Ei – total counts accumulated in i-th map cell,
Tiexposure– total exposure time for i-th map cell,
Fi – average counting rate in i-th map cell (counts/sec).
Once the reduction algorithms for
creating the ALF product have been derived and verified they will be included
here.
The LEND-RDR
data products will be made available in sequential data releases at three month
intervals as specified in applicable document [1] (Appendix 4, Lunar
Reconnaissance Orbiter Archive Delivery Schedule).
The release schedule for LEND
data product archives is strictly within the nominal six-month period for data
processing, data validation, archive generation, delivery to the PDS,
validation of the delivery by PDS, and PDS archive release to the public. Once
released by the PDS, the LEND data will be available online through a set of
PDS search and retrieval tools that will provide access to data from all LRO
instruments.
The data set ID
provided by the PDS for the LEND RDR data products are:
LRO-M-LEND-5-RDR-V1.0
The version number is
incremented should the entire RDR data set be revised.
The file
naming convention for LEND RDR data files will be the PRODUCT_TYPE value followed
by an eight-digit date specifier in the format YYYYMMDD, e.g. LEND_RDR_RSCI_20081223.DAT.
The RDR products will have detached PDS labels in a separate file of the same
name, extension .LBL.
Individual
RDR products may be revised during the course of the mission. A product's revision
status is recorded in its PDS label using the keyword PRODUCT_VERSION_ID. The
value of this keyword is "1.0" for the first version of a product.
The value is incremented with each product revision. Also, the label keyword PRODUCT_CREATION_TIME
is updated with each product revision.
The PDS
label also includes a RELEASE_ID keyword to indicate the number of the data release
in which the product was included. The first release of the mission has a RELEASE_ID
value of "0001"; the second release three months later has a value of
"0002", and so on. This keyword is not updated for a revised
product; it always shows the ID of the release in which the product first
appeared.
PRODUCT_VERSION_ID,
PRODUCT_CREATION_TIME, and RELEASE_ID appear in the index table for the RDR
archive so that the set of revised products can be easily identified.
The LEND RDR
data product complies with Planetary Data System standards for file formats and
labels, as specified in the PDS Standards Reference [4].
Time series
data in the LEND RDR data products are sorted according to the value of the spacecraft
clock. Time series records are tagged by spacecraft time which contains the 5
MSB of the spacecraft clock, 4 bytes of seconds and 1 byte of subsecond. The LEND
Instrument contains its own internal clock. Values from this clock are also
included in the dataset, the units of which are in 0.016 seconds since the last
power on of the instrument.
This data
set conforms to the LRO coordinate system conventions.
Binary
files are all fixed-length, stored in most-significant-byte-first (big-endian)
format. In text files each record is terminated with a carriage return followed
by a line feed.
LEND RDR
products will be validated by the LEND Team for science content and for compliance
with PDS archive standards [Applicable Document 4].
The RDR data product
shall be grouped into directories with one directory per flight day. Flight day
is defined to be midnight-to-midnight UTC. Within each directory shall be the four
labels corresponding to the individual parts of the data product. The labels
will point to one data file each, and contain pointers to format labels
detailing the column layout of the data files. In the DATA directory of the RDR
archive, data for each flight day will be in a subdirectory named in the format
YYYYMMDD, indicating the date at the end of the data acquisition
period.
The CHK data product is a collection engineering readings
collected from 12 temperature sensors aboard the LEND instrument. This data
product reports the engineering readings as physical unit of degrees Celsius.
The physical units are derived from the digital number readings reported in the
EDR HK data product. The CHK data product is structured as a single 15-column,
time ordered data file.
This product is organized as a single data file containing
converted housekeeping data collected over a single measurement day's
activities, with a detached ASCII text PDS label file (See Appendix 5.3 EXAMPLE
- LEND Converted HK Data Label) for each binary data file. The data folders
will be labeled by Earth date in a format of YYYYMMDD, indicating the date at
the end of the collection day.
The data format for the CHK is a 15-column binary table.
Columns range from 2 to 23 bytes in width. Column structure and start byte are
described in Appendix 5.3. The number of rows in a data table will depend on
the number of collection intervals during the measurement period. We would expect
approximately 86400 data records per file, but there may be some variations due
to short data gaps.
Each data
file is described by a PDS label in a separate file with the same name, extension
“.LBL”. A label file is stored in the same directory as the data file it
describes. In most cases, the PDS label includes a pointer to another file that
contains the column definitions, in order to avoid repeating the lengthy
definitions in every label. These column definition files have the extension
“.FMT” and are stored in the LABEL directory of the RDR archive.
The data
files themselves do not contain any embedded headers.
The RSCI data product is a time-series collection of
neutron spectra readings collected from the 9 neutron detectors aboard the LEND
instrument along with the timing and spatial information associated with each
collection interval. The RSCI data product is structured as a single 45-column,
time ordered data file for each collection day.
This product is organized as a single data file containing
neutron spectra collected over a single measurement day's activities, with a
detached ASCII text PDS label file (See Appendix 5.4 EXAMPLE – LEND Rectified
Science Data Label) for each binary data file. The data folders will be labeled
by Earth date in a format of YYYYMMDD, indicating the date at the end
of the collection day.
The data format for the RSCI is a 45-column binary table.
Columns range from 1 to 32 bytes in width. Column structure and start byte are
described in Appendix 5.4. The number of rows in a data table will depend on
the number of collection intervals during the measurement period. We would expect
approximately 86400 data records per file, but there may be some variations due
to short data gaps.
Each data
file is described by a PDS label in a separate file with the same name,
extension “.LBL”. A label file is stored in the same directory as the data file
it describes. In most cases, the PDS label includes a pointer to another file
that contains the column definitions, in order to avoid repeating the lengthy
definitions in every label. These column definition files have the extension
“.FMT” and are stored in the LABEL directory of the RDR archive.
The data
files themselves do not contain any embedded headers.
The Derived data product is a time-series collection of
neutron counts and backgrounds derived from the 9 neutron detectors aboard the
LEND instrument. The derived data product is structured as a single 27-column,
time ordered data file for each collection day.
The Extended Derived data product is a time-series
collection of neutron count uncertainties derived from the 9 neutron detectors
aboard the LEND instrument, as well as a calculated sum of neutron counts and
uncertainty across the four collimated sensors of epithermal neutrons,
CSETN1-4. The extended derived data product is structured as a single
12-column, time ordered data file for each collection day.
These products are organized as two data file sets, one
containing neutron counts for the 9 neutron detectors collected over a single
measurement day's activities, with a detached ASCII text PDS label file (See
Appendix 5.5 EXAMPLE – Derived LEND Data Label) and the second containing
neutron count uncertainties and supplemental data values with detached ASCII
text PDS label file (See Appendix 5.5 EXAMPLE – Derived LEND Data Label). The
data folders will be labeled by Earth date in a format of YYYYMMDD, indicating
the date at the end of the collection day.
The data format for the Derived data is a 27-column binary
table, and the data format for the Extended Derived data is a 12-column binary
table. Columns range from 1 to 23 bytes in width for both data formats. Column
structure and start byte are described in Appendix 5.5 and 5.6, respectively.
The number of rows in a data table will depend on the number of collection
intervals during the measurement period. We would expect approximately 86400
data records per file, but there may be some variations due to short data gaps.
Each data
file is described by a PDS label in a separate file with the same name,
extension “.LBL”. A label file is stored in the same directory as the data file
it describes. In most cases, the PDS label includes a pointer to another file
that contains the column definitions, in order to avoid repeating the lengthy
definitions in every label. These column definition files have the extension
“.FMT” and are stored in the LABEL directory of the RDR archive.
The data
files themselves do not contain any embedded headers.
The Averaged data products are a collection of averaged,
normalized neutron counting rates and errors for the neutron spectra collected
by the 9 neutron detectors aboard the LEND instrument. Orbital Epithermal and
Fast neutron fluxes are given in a separate product. The averaged data products
are structured as a single 23-column and 11 column, data file for each of the
poles and for the equatorial region.
These products are organized as two data file sets, one
containing averaged, normalized neutron counting rates for the 9 neutron detectors
collected over a single measurement period, with a detached ASCII text PDS
label file (See Appendix 5.7) and the second containing the thermal, epithermal
and fast fluxes with detached ASCII text PDS label file (See Appendix 5.8).
The data formats for the two averaged data sets are a 23-column
binary table, for the counts, and an 11-column binary table, for the fluxes.
Column structures and start bytes are described in Appendix 5.7 for the counts,
and 5.8 for the fluxes. The number of data records per file should not vary since
the temporal and spatial binning of data used to create the two averaged
products has been set.
Each data
file is described by a PDS label in a separate file with the same name,
extension “.LBL”. A label file is stored in the same directory as the data file
it describes. In most cases, the PDS label includes a pointer to another file
that contains the column definitions, in order to avoid repeating the lengthy
definitions in every label. These column definition files have the extension
“.FMT” and are stored in the LABEL directory of the RDR archive.
The data
files themselves do not contain any embedded headers.
PDS-labeled
images and tables can be viewed with the program NASAView, developed by the PDS
and available for a variety of computer platforms from the PDS web site http://pdsproto.jpl.nasa.gov/Distribution/license.html. There is no charge
for NASAView.
The LEND
team is supplying a data viewer for the RDR data sets. It will be included in
the SOFTWARE directory of the Archive. PDS products may be viewed with the
program LRO_LEND_PDS_VIEWER, developed by the University of Arizona Lunar
Planetary Lab. The LRO_LEND_PDS_VIEWER Data Viewer is a software tool for
browsing and displaying LRO LEND PDS data files in tabular or graphical format,
and label/format files in text format. The tool validates and reads LRO LEND
PDS EDR and RDR files. PDS files may be acquired through the PDS Geosciences
Node. There is no charge for LRO_LEND_PDS_VIEWER. A setup file is available
for download at http://pds-geosciences.wustl.edu/missions/lro/lend.htm under Online Tools.
Running the setup file will install the software and create a Start Menu and
desktop icon for launching the tool. Installation requires roughly 5.4 MB of
disk space. This software can be run from a Windows based system that has Java
1.6 or greater installed. You may download the Java Runtime environment for
Windows free at
http://java.com/en/download/inc/windows_upgrade_xpi.jsp
A user guide
for the software may be displayed from its help menu.
if counts are between 0 to 220, then:
Temp = Counts*a1 + a0
if counts are between 221 to 255, then:
Temp = (Counts - 256)*a1 + a0
For sensor #7
if counts are
between 0 to 150
Temp = Counts*a1
+ a0
if counts are
between 151 to 255
Temp =
(Counts-256)*a1 + a0
|
sensor
|
a0
|
a1
|
|
1
|
-16,19047
|
0,47619
|
|
2
|
-16,82242
|
0,46728
|
|
3
|
-17,61904
|
0,47619
|
|
4
|
-21,90476
|
0,47619
|
|
5
|
-21,17117
|
0,45045
|
|
6
|
-21,42857
|
0,47619
|
|
7
|
9,04255
|
0,53191
|
|
8
|
-17,12962
|
0,46296
|
|
9
|
-17,92452
|
0,47169
|
|
10
|
-18,09523
|
0,47619
|
|
11
|
-26,12612
|
0,45045
|
|
12
|
-20,09345
|
0,46728
|
PDS_VERSION_ID
= "PDS3"
LABEL_REVISION_NOTE
= "2008-01-15, LEND Team, initial
release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 86400
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 77
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_CHK_20090228_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2009-06-15T19:25:31
PRODUCT_TYPE
= "LEND_RDR_CHK"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "LUNAR RECONNAISSANCE ORBITER"
INSTRUMENT_NAME
= "LUNAR EXPLORATION NEUTRON DETECTOR"
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "MAPPING"
TARGET_NAME
= "MOON"
START_TIME
= 2009-02-28T00:00:00
STOP_TIME
= 2009-02-28T23:59:59
SPACECRAFT_CLOCK_START_COUNT
= "2311228"
SPACECRAFT_CLOCK_STOP_COUNT
= "2397627"
^TABLE
= "LEND_RDR_CHK_20090228.DAT"
OBJECT
= TABLE
COLUMNS = 15
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 77
ROWS = 86400
DESCRIPTION = "
This table contains instrument parameters and housekeeping values
as observed by the Lunar Reconnaissance Orbiter (LRO) Lunar
Exploration Neutron Detector (LEND).
Detailed descriptions for the parameters defined below are
contained in the ‘LRO_LEND_RDR_SIS’ document.
The complete column definitions are contained in an external file
found in the LABEL directory of the archive volume.
"
^STRUCTURE = "LEND_RDR_CHK.FMT"
END_OBJECT
= TABLE
END
OBJECT
= COLUMN
COLUMN_NUMBER = 1
NAME = LEND_TIME
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 4
START_BYTE = 1
DESCRIPTION = "LEND internal time (incrementation frequency -
62500 Hz)"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 2
NAME = UTC
DATA_TYPE = CHARACTER
BYTES = 23
START_BYTE = 5
DESCRIPTION
= "UTC time of measurement period"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 3
NAME = TEMPERATURES_0
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 28
DESCRIPTION = "Temperature reading of scintillator in Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 4
NAME = TEMPERATURES_1
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 32
DESCRIPTION = "Temperature reading of FPGA electronics board in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 5
NAME = TEMPERATURES_2
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 36
DESCRIPTION = "Temperature reading of the low voltage board in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 6
NAME = TEMPERATURES_3
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 40
DESCRIPTION = "Temperature reading outer detector #2 (SETN) in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 7
NAME = TEMPERATURES_4
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 44
DESCRIPTION = "Temperature reading outer detector #3 (STN2) in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 8
NAME = TEMPERATURES_5
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 48
DESCRIPTION = "Temperature reading in outer detector #2 (STN3) in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 9
NAME = TEMPERATURES_6
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 52
DESCRIPTION = "Temperature reading in outer detector #1 (STN1) in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 10
NAME = TEMPERATURES_7
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 56
DESCRIPTION = "Temperature reading high voltage board #2 in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 11
NAME = TEMPERATURES_8
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 60
DESCRIPTION = "Temperature reading high voltage board #1 in
Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 12
NAME = TEMPERATURES_9
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 64
DESCRIPTION = "Temperature reading control board #2 in Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 13
NAME = TEMPERATURES_10
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 68
DESCRIPTION = "Temperature reading control board #1 in Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 14
NAME = TEMPERATURES_11
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 72
DESCRIPTION = "Temperature reading mounting point in Celsius."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 15
NAME = DATA_COLLECTION_TIME
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 2
START_BYTE = 76
DESCRIPTION = "Value of ‘collection time’ register, time in
seconds."
END_OBJECT
= COLUMN
PDS_VERSION_ID
= "PDS3"
LABEL_REVISION_NOTE
= "2008-01-15, LEND Team, initial
release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 86400
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 594
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_RSCI_20090228_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2009-06-15T19:25:31
PRODUCT_TYPE
= "LEND_RDR_RSCI"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "LUNAR RECONNAISSANCE ORBITER"
INSTRUMENT_NAME
= "LUNAR EXPLORATION NEUTRON DETECTOR "
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "PRIMARY MISSION"
TARGET_NAME
= "MOON"
START_TIME
= 2009-02-28T00:00:00
STOP_TIME
= 2009-02-28T23:59:59
SPACECRAFT_CLOCK_START_COUNT
= "2311228"
SPACECRAFT_CLOCK_STOP_COUNT
= "2397627"
^TABLE
= "LEND_RDR_RSCI_20090228.DAT"
OBJECT
= TABLE
COLUMNS = 46
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 594
ROWS = 86400
DESCRIPTION = "
This table contains neutron spectra and associated timing and
spatial information for each collection interval (frame)
as observed by the Lunar Reconnaissance Orbiter (LRO) Lunar
Exploration Neutron Detector (LEND) during a single measurement
day.
Detailed descriptions for the parameters defined below are
contained in the ‘LRO_LEND_RDR_SIS’ document.
The complete column definitions are contained in an external file
found in the LABEL directory of the archive volume.
"
^STRUCTURE = "LEND_RDR_RSCI.FMT"
END_OBJECT
= TABLE
END
OBJECT
= COLUMN
COLUMN_NUMBER = 1
NAME = LRO_TIME
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 8
START_BYTE = 1
DESCRIPTION = "5 upper bytes of LRO time."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 2
NAME = LEND_TIME
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 4
START_BYTE = 9
DESCRIPTION = "LEND internal time (incremention frequency - 62500
Hz)"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 3
NAME = UTC
DATA_TYPE = CHARACTER
BYTES = 23
START_BYTE = 13
DESCRIPTION = "UTC time at the middle of the collection interval,
stored as yyyy-mm-ddThh:mm:ss.sss."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 4
NAME = FRAME_NUMBER
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 4
START_BYTE = 36
DESCRIPTION = "Sequential counter of accumulation intervals."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 5
NAME = LRO_ORBIT_NUMBER
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 4
START_BYTE = 40
DESCRIPTION = "Orbit number common to all instruments aboard LRO.
This orbit number is incremented by one as the
spacecraft passes through the orbital descending
node."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 6
NAME = LATITUDE
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 44
UNIT = DEGREE
DESCRIPTION = "Sub spacecraft latitude in Lunar fixed coordinates
at the middle of the pixel."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 7
NAME = LONGITIUDE
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 52
UNIT = DEGREE
DESCRIPTION = "Sub spacecraft longitude in Lunar fixed coordinates
at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 8
NAME = SCPOS_INERT_X
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 60
UNIT = KILOMETER
DESCRIPTION = "The geometric position X of the spacecraft with
respect to the Moon in the 'LUNARIAU' inertial frame
at the input epoch 'et' at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 9
NAME = SCPOS_INERT_Y
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 68
UNIT = KILOMETER
DESCRIPTION = "The geometric position Y of the spacecraft with
respect
to the Moon in the 'LUNARIAU' inertial frame at the input
epoch
'et' at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 10
NAME = SCPOS_INERT_Z
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 76
UNIT = KILOMETER
DESCRIPTION = "The geometric position Z of the spacecraft with
respect
to the Moon in the 'LUNARIAU' inertial frame at the input
epoch
'et' at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 11
NAME = SCVEL_INERT_X
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 84
UNIT = "KILOMETER/SECOND"
DESCRIPTION = "The geometric velocity X of the spacecraft with
respect
to Moon in the 'LUNARIAU' inertial frame at the input epoch
'et'
at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 12
NAME = SCVEL_INERT_Y
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 92
UNIT = "KILOMETER/SECOND"
DESCRIPTION = "The geometric velocity Y of the spacecraft with respect to
Moon in the 'LUNARIAU' inertial frame at the input epoch 'et' at the
middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 13
NAME = SCVEL_INERT_Z
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 100
UNIT = "KILOMETER/SECOND"
DESCRIPTION = "The geometric velocity Z of the spacecraft with respect
to Moon in the 'LUNARIAU' inertial frame at the input epoch 'et' at the
middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 14
NAME = LUNARPOS_INSTR_X
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 108
UNIT = KILOMETER
DESCRIPTION = "The X position of the sub-spacecraft point as seen from
the spacecraft in the instrument frame at the middle of the frame interval. If
no spacecraft orientation data was available, then all elements of are set
to zero."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 15
NAME = LUNARPOS_INSTR_Y
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 116
UNIT = KILOMETER
DESCRIPTION = "The Y position of the sub-spacecraft point as seen
from the spacecraft in the instrument frame at the middle of the frame
interval.
If no spacecraft orientation data was available, then all elements of are
set to zero."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 16
NAME = LUNARPOS_INSTR_Z
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 124
UNIT = KILOMETER
DESCRIPTION = "The Z position of the sub-spacecraft point as seen
from the spacecraft in the instrument frame at the middle of the
frame interval. If no spacecraft orientation data was available, then all
elements of are set to zero."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 17
NAME = LUNARVEL_INSTR_X
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 132
UNIT = "KILOMETER/SECOND"
DESCRIPTION = "Contains the inertial spacecraft velocity direction
X rotated to the instrument frame at the middle of the frame interval. If
no spacecraft orientation data was available for the request
time, then all elements are set to zero."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 18
NAME = LUNARVEL_INSTR_Y
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 140
UNIT = "KILOMETER/SECOND"
DESCRIPTION = "Contains the inertial spacecraft velocity direction
Y rotated to the instrument frame at the middle of the frame interval. If
no spacecraft orientation data was available for the request time,
then all elements are set to zero."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 19
NAME = LUNARVEL_INSTR_Z
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 148
UNIT
= "KILOMETER/SECOND"
DESCRIPTION = "Contains the inertial spacecraft velocity direction
Z rotated to the instrument frame at the middle of the frame interval. If
no spacecraft orientation data was available for the request time,
then all elements are set to zero."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 20
NAME = SCPOS_MOON_X
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 156
UNIT = KILOMETER
DESCRIPTION = "Spacecraft position X in Lunar fixed coordinates at
the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 21
NAME = SCPOS_MOON_Y
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 164
UNIT = KILOMETER
DESCRIPTION = "Spacecraft position Y in Lunar fixed coordinates at
the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 22
NAME = SCPOS_MOON_Z
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 172
UNIT = KILOMETER
DESCRIPTION = "Spacecraft position Z in Lunar fixed coordinates at
the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 23
NAME = INSTR_BORESIGHT_MOON_X
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 180
UNIT = KILOMETER
DESCRIPTION = "Sub instrument boresight X in Lunar fixed
coordinates at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 24
NAME = INSTR_BORESIGHT_MOON_Y
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 188
UNIT = KILOMETER
DESCRIPTION = "Sub instrument boresight Y in Lunar fixed
coordinates at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 25
NAME = INSTR_BORESIGHT_MOON_Z
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 196
UNIT = KILOMETER
DESCRIPTION = "Sub instrument boresight Z in Lunar fixed
coordinates at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 26
NAME = SUB_SCPOS_MOON_X
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 204
UNIT = KILOMETER
DESCRIPTION = "Sub spacecraft vector X in Lunar fixed
coordinates at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 27
NAME = SUB_SCPOS_MOON_Y
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 212
UNIT = KILOMETER
DESCRIPTION = "Sub spacecraft vector Y in Lunar fixed
coordinates at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 28
NAME = SUB_SCPOS_MOON_Z
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 220
UNIT = KILOMETER
DESCRIPTION = "Sub spacecraft vector Z in Lunar fixed
coordinates at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 29
NAME = SCALT
DATA_TYPE = IEEE_REAL
BYTES = 8
START_BYTE = 228
UNIT = KILOMETER
DESCRIPTION = "Lunarcentric altitude of the sub-spacecraft point
in Luanr-fixed rotating frame at the middle of the frame interval."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 30
NAME = LOCAL_HOUR
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 1
START_BYTE = 236
UNIT = MINUTE
DESCRIPTION = "Local Sun hour at the sub-spacecraft point."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 31
NAME = LOCAL_MINUTE
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 1
START_BYTE = 237
UNIT = MINUTE
DESCRIPTION = "Local Sun minute at the sub-spacecraft point."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 32
NAME = POINTING
DATA_TYPE = BOOLEAN
BYTES = 1
START_BYTE = 238
DESCRIPTION = "True if pointing data was available."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 33
NAME = INTERSECTING
DATA_TYPE = BOOLEAN
BYTES = 1
START_BYTE = 239
DESCRIPTION = "True if the pointing vector intersects Moon."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 34
NAME = DATA_COLLECTION_TIME
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 2
START_BYTE = 240
UNIT = SECOND
DESCRIPTION = "Value of 'collection time' register, length of
time in seconds."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 35
NAME = PARAMETERS_CHANGED
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 1
START_BYTE = 242
DESCRIPTION = "Number of the instrument parameters that were
changed by commands after previous frame."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 36
NAME = STN1_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 243
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from uncollimated counter of thermal and
epithermal neutrons STN1"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 37
NAME = SETN_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 275
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from uncollimated counter of epithermal
neutrons SETN"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 38
NAME = STN2_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 307
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from uncollimated counter of thermal
and epithermal neutrons STN2."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 39
NAME = STN3_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 339
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from uncollimated counter of thermal
and epithermal neutrons STN3."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 40
NAME = CSETN1_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 371
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from collimated counter of epithermal
neutrons CSETN1."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 41
NAME = CSETN2_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 403
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from collimated counter of epithermal
neutrons CSETN2."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 42
NAME = CSETN3_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 435
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from collimated counter of epithermal
neutrons CSETN3."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 43
NAME = CSETN4_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 467
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Spectrum from collimated counter of epithermal
neutrons CSETN4."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 44
NAME = SHEN1_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 499
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = "Charge Particle spectra for stilbene."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 45
NAME = SHEN2_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 531
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = " Neutron spectra for stilbene."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 46
NAME = SHEN3_SPECTRUM
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 32
START_BYTE = 563
UNIT = COUNTS
ITEMS = 16
ITEM_BYTES = 2
DESCRIPTION = " Gamma spectra for stilbene."
END_OBJECT
= COLUMN
PDS_VERSION_ID
= PDS3
DD_VERSION_ID
= PDSCAT1R52 (Data Dictionary Version)
LABEL_REVISION_NOTE
= "2008-01-15, LEND Team, initial
release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 86400
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 239
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_DLD_20090228_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2009-06-15T19:25:31
PRODUCT_TYPE
= "LEND_RDR_DLD"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "Lunar Reconnaissance Orbiter"
INSTRUMENT_NAME
= "Lunar Exploration Neutron Detector"
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "PRIMARY MISSION"
TARGET_NAME
= "MOON"
START_TIME
= 2009-02-28T00:00:00
STOP_TIME
= 2009-02-28T23:59:59
SPACECRAFT_CLOCK_START_COUNT
= "2311228"
SPACECRAFT_CLOCK_STOP_COUNT
= "2397627"
^TABLE
= "LEND_RDR_DLD_20090228.DAT"
OBJECT
= TABLE
COLUMNS
= 27
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 239
ROWS = 86400
DESCRIPTION = "
This table contains backgrounds and background subtracted neutron
counting data for each of the nine neutron sensors
aboard the Lunar Reconnaissance Orbiter (LRO) Lunar
Exploration Neutron Detector (LEND).
Detailed descriptions for the parameters defined below are
contained in the ‘LRO_LEND_RDR_SIS’ document.
The complete column definitions are contained in an external file
found in the LABEL directory of the archive volume.
"
^STRUCTURE = "LEND_RDR_DLD.FMT"
END_OBJECT
= TABLE
END
OBJECT
= COLUMN
COLUMN_NUMBER = 1
NAME = LRO_TIME
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 8
START_BYTE = 1
DESCRIPTION = "5 upper bytes of LRO time."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 2
NAME = UTC
DATA_TYPE = CHARACTER
BYTES = 23
START_BYTE = 9
DESCRIPTION = "UTC time at the middle of the collection interval,
stored as yyyy-mm-ddThh:mm:ss.sss."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 3
NAME = LOCAL_HOUR
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 1
START_BYTE = 32
UNIT = MINUTE
DESCRIPTION = "Local Sun hour at the sub-spacecraft point."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 4
NAME = LOCAL_MINUTE
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 1
START_BYTE = 33
UNIT = MINUTE
DESCRIPTION = "Local Sun minute at the sub-spacecraft point."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 5
NAME = LUNARCENTRIC_LATITUDE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 34
UNIT = DEGREE
DESCRIPTION = "Latitude in LUNAR fixed coordinates at the middle
of the frame."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 6
NAME = LUNARCENTIC_EAST_LONGITUDE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 38
UNIT = DEGREE
DESCRIPTION = "Longitude in Lunar fixed coordinates at the middle
of the frame."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 7
NAME = COLLECTION_DURATION
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 4
START_BYTE = 42
UNIT = SECOND
DESCRIPTION = "Value of 'collection time' register, length of time
in seconds."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 8
NAME = STN1_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 46
UNIT = COUNTS
DESCRIPTION = "Background counts for STN1 detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 9
NAME = STN1_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 50
UNIT = COUNTS
DESCRIPTION = "Counts gathered in STN1 detector during frame interval.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 10
NAME = SETN_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 54
UNIT = COUNTS
DESCRIPTION
= "Background counts for SETN detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 11
NAME = SETN_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 58
UNIT = COUNTS
DESCRIPTION = "Counts gathered in SETN detector during frame interval.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 12
NAME = STN2_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE
= 62
UNIT = COUNTS
DESCRIPTION = "Background counts for STN2 detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 13
NAME = STN2_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 66
UNIT = COUNTS
DESCRIPTION = "Counts gathered in STN2 detector during frame interval.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 14
NAME = STN3_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE
= 70
UNIT = COUNTS
DESCRIPTION = "Background counts for STN3 detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 15
NAME = STN3_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 74
UNIT = COUNTS
DESCRIPTION
= "Counts gathered in STN3 detector during frame interval.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 16
NAME = CSETN1_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 78
UNIT = COUNTS
DESCRIPTION = "Background counts for CSETN1 collimated
detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 17
NAME = CSETN1_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 82
UNIT = COUNTS
DESCRIPTION = "Counts gathered in CSETN1 collimated
detector during frame interval. A negative in this column
indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 18
NAME = CSETN2_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 86
UNIT = COUNTS
DESCRIPTION = "Background counts for CSETN2 collimated
detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 19
NAME = CSETN2_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 90
UNIT = COUNTS
DESCRIPTION = "Counts gathered in CSETN2 collimated
detector during frame interval. A negative in this column
indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 20
NAME = CSETN3_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 94
UNIT = COUNTS
DESCRIPTION = "Background counts for CSETN3 collimated
detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 21
NAME = CSETN3_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 98
UNIT = COUNTS
DESCRIPTION = "Counts gathered in CSETN3 collimated
detector during frame interval. A negative in this column
indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 22
NAME = CSETN4_BKGD
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 102
UNIT = COUNTS
DESCRIPTION = "Background counts for CSETN4 collimated
detector (counts)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 23
NAME = CSETN4_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 106
UNIT = COUNTS
DESCRIPTION = "Counts gathered in CSETN4 collimated
detector during frame interval. A negative in this column
indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 24
NAME = SHEN_BCGD
DATA_TYPE = IEEE_REAL
BYTES = 64
START_BYTE = 110
ITEMS = 16
ITEM_BYTES = 4
UNIT = COUNTS
DESCRIPTION = "Background counts for all channels of neutron channel of
Inner Scintillator (counts). The Channels contain data as follows:
Channel 0 - sum of channels 0 through 5,
Channel 1 - sum of channel 6,
Channel 2 - sum of channel 7,
Channel 3 - sum of channel 8,
Channel 4 - sum of channel 9,
Channel 5 - sum of channel 10,
Channel 6 - sum of channel 11,
Channel 7 - sum of channel 12,
Channel 8 - sum of channel 13,
Channel 9 - sum of channel 14,
Channel 10 - sum of channel 15,
Channel 11 - sum of channel 6 through 8,
Channel 12 - sum of channel 9 through 12,
Channel 13 - sum of channel 13 through 14,
Channel 14 - sum of channel 6 through 14,
Channel 15 - sum of channel 0 through 16"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 25
NAME = SHEN_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 64
START_BYTE = 174
ITEMS = 16
ITEM_BYTES = 4
UNIT = COUNTS
DESCRIPTION = "Counts gathered in all channels of neutron channel of
Inner Scintillator during frame interval. The Channels contain data as follows:
Channel 0 - sum of channels 0 through 5,
Channel 1 - sum of channel 6,
Channel 2 - sum of channel 7,
Channel 3 - sum of channel 8,
Channel 4 - sum of channel 9,
Channel 5 - sum of channel 10,
Channel 6 - sum of channel 11,
Channel 7 - sum of channel 12,
Channel 8 - sum of channel 13,
Channel 9 - sum of channel 14,
Channel 10 - sum of channel 15,
Channel 11 - sum of channel 6 through 8,
Channel 12 - sum of channel 9 through 12,
Channel 13 - sum of channel 13 through 14,
Channel 14 - sum of channel 6 through 14,
Channel 15 - sum of channel 0 through 16
A negative in any channel indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 26
NAME = SUN_ACTIVITY
DATA_TYPE = BOOLEAN
BYTES = 1
START_BYTE = 238
UNIT = COUNTS
DESCRIPTION = "1 (active sun during frame interval);
0 (no active sun during frame interval)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 27
NAME = NADIR_POINTING
DATA_TYPE = BOOLEAN
BYTES = 1
START_BYTE = 239
UNIT = COUNTS
DESCRIPTION = "1 (instrument is nadir pointing);
0 (anything other than nadir pointing)."
END_OBJECT
= COLUMN
PDS_VERSION_ID
= PDS3
LABEL_REVISION_NOTE
= "2016-06-15, LEND Team, initial release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 86400
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 71
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_DLX_20090704_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2016-05-25T12:55:31
PRODUCT_TYPE
= "LEND_RDR_DLX"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "LUNAR RECONNAISSANCE ORBITER"
INSTRUMENT_NAME
= "LUNAR EXPLORATION NEUTRON DETECTOR"
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "COMMISSIONING"
TARGET_NAME
= "MOON"
START_TIME
= 2009-07-04T00:00:00
STOP_TIME
= 2009-07-04T23:59:59
SPACECRAFT_CLOCK_START_COUNT
= "268358399"
SPACECRAFT_CLOCK_STOP_COUNT
= "268444798"
^TABLE
= "LEND_RDR_DLX_20090704.DAT"
OBJECT
= TABLE
COLUMNS = 12
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 71
ROWS = 86400
DESCRIPTION = "
This table contains a calculated sum of neutron counts for
the four CSETN detectors and uncertainties for neutron
counting data for each of the nine neutron sensors
aboard the Lunar Reconnaissance Orbiter (LRO) Lunar
Exploration Neutron Detector (LEND).
Detailed descriptions for the parameters defined below are
contained in the 'LRO_LEND_RDR_SIS' document.
The complete column definitions are contained in an external file
found in the LABEL directory of the archive volume.
"
^STRUCTURE = "LEND_RDR_DLX.FMT"
END_OBJECT
= TABLE
END
OBJECT
= COLUMN
COLUMN_NUMBER = 1
NAME = LRO_TIME
DATA_TYPE = MSB_UNSIGNED_INTEGER
BYTES = 8
START_BYTE = 1
DESCRIPTION = "5 upper bytes of LRO time."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 2
NAME = UTC
DATA_TYPE = TIME
BYTES = 23
START_BYTE = 9
DESCRIPTION = "UTC time at the middle of the collection interval,
stored as yyyy-mm-ddThh:mm:ss.sss."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 3
NAME = CSETN_SUM_COUNTS
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 32
UNIT = COUNTS
DESCRIPTION = "Calculated sum of corrected counts in 4 CSETN detectors.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 4
NAME = CSETN_SUM_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 36
UNIT = COUNTS
DESCRIPTION = "Sigma value of calculated sum of corrected counts in 4
CSETN detectors.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 5
NAME = CSETN1_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 40
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in CSETN1 detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 6
NAME = CSETN2_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 44
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in CSETN2 detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 7
NAME = CSETN3_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 48
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in CSETN3 detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 8
NAME = CSETN4_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 52
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in CSETN4 detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 9
NAME = SETN_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 56
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in SETN detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 10
NAME = STN1_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 60
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in STN1 detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 11
NAME = STN2_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 64
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in STN2 detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 12
NAME = STN3_SIGMA
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 68
UNIT = COUNTS
DESCRIPTION = "Sigma value of corrected counts in STN3 detector.
A negative in this column indicates it should not be used."
END_OBJECT
= COLUMN
PDS_VERSION_ID
= "PDS3"
LABEL_REVISION_NOTE
= "2010-02-04, LEND Team, initial
release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 14400
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 310
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_ALDS_20090914_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2011-03-23T13:16:45
PRODUCT_TYPE
= "LEND_RDR_ALD"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "Lunar Reconnaissance Orbiter"
INSTRUMENT_NAME
= "Lunar Exploration Neutron Detector"
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "COMMISSIONING"
TARGET_NAME
= "MOON"
START_TIME
= 2009-09-14T00:00:00
STOP_TIME
= 2010-09-14T00:00:00
^TABLE
= "LEND_RDR_ALDS_20090914.DAT"
OBJECT
= TABLE
COLUMNS = 23
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 310
ROWS = 14400
DESCRIPTION = "
The ALD South Polar product data has been averaged spatially over
a 0.5 degree by 0.5 degree grid below -80 degrees.
The ALD South Polar product data is presented in a table
corresponding to the 0.5 degree by 0.5 degree grid. There are 20
latitude bands and 720 longitude bands below -80, thus 14400 grid
cells. Each cell corresponds to one row in the table. The first
720 rows in the table are the data for the 0.5 degree latitude
band centered at -89.75 degrees south latitude, the second 720
rows are the data for the band centered at -89.25 degrees south
latitude, and so on. Within each band, longitude increases
eastward from the cell centered at 0.25 degrees east longitude
to the cell centered at 359.75 degrees east longitude.
Averaged LEND Data products are composed of averaged normalized
Counting rates and the associated timing, spatial and engineering
information. The ALDs consists of the cumulative background
subtracted and normalized counts of neutrons at the nine LEND
detectors averaged over the above defined."
^STRUCTURE = "LEND_RDR_ALD.FMT"
END_OBJECT
= TABLE
END
PDS_VERSION_ID
= "PDS3"
LABEL_REVISION_NOTE
= "2010-02-04, LEND Team, initial
release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 57600
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 310
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_ALDE_20090914_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2011-03-23T13:15:55
PRODUCT_TYPE
= "LEND_RDR_ALD"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "Lunar Reconnaissance Orbiter"
INSTRUMENT_NAME
= "Lunar Exploration Neutron Detector"
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "COMMISSIONING"
TARGET_NAME
= "MOON"
START_TIME
= 2009-09-14T00:00:00
STOP_TIME
= 2010-09-14T00:00:00
^TABLE
= "LEND_RDR_ALDE_20090914.DAT"
OBJECT
= TABLE
COLUMNS = 23
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 310
ROWS = 57600
DESCRIPTION = "
The ALD Equatorial Polar product data has been averaged spatially
over a 1.0 degree by 1.0 degree grid above -80 and below 80
degrees.
The ALD Equatorial Polar product data is presented in a table
corresponding to the 1.0 degree by 1.0 degree grid. There are 160
latitude bands and 360 longitude bands below 80 and above -80,
thus 57600 grid cells. Each cell corresponds to one row in the
table. The first 360 rows in the table are the data for the 1.0
degree latitude band centered at 79.5 degrees north latitude,
the second 720 rows are the data for the band centered at 78.5
degrees north latitude, and so on. Within each band, longitude
increases eastward from the cell centered at 0.50 degrees east
longitude to the cell centered at 359.50 degrees east longitude.
Averaged LEND Data products are composed of averaged normalized
Counting rates and the associated timing, spatial and engineering
information. The ALDs consists of the cumulative background
subtracted and normalized counts of neutrons at the nine LEND
detectors averaged over the above defined."
^STRUCTURE = "LEND_RDR_ALD.FMT"
END_OBJECT
= TABLE
END
PDS_VERSION_ID
= "PDS3"
LABEL_REVISION_NOTE
= "2010-02-04, LEND Team, initial
release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 14400
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 310
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_ALDN_20090914_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2011-03-23T13:12:29
PRODUCT_TYPE
= "LEND_RDR_ALD"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "Lunar Reconnaissance Orbiter"
INSTRUMENT_NAME
= "Lunar Exploration Neutron Detector"
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "COMMISSIONING"
TARGET_NAME
= "MOON"
START_TIME
= 2009-09-14T00:00:00
STOP_TIME
= 2010-09-14T00:00:00
^TABLE
= "LEND_RDR_ALDN_20090914.DAT"
OBJECT
= TABLE
COLUMNS = 23
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 310
ROWS = 14400
DESCRIPTION = "
The ALD North Polar product data has been averaged spatially over
a 0.5 degree by 0.5 degree grid above 80 degrees.
The ALD North Polar product data is presented in a table
corresponding to the 0.5 degree by 0.5 degree grid. There are 20
latitude bands and 720 longitude bands above 80, thus 14400 grid
cells. Each cell corresponds to one row in the table. The first
720 rows in the table are the data for the 0.5 degree latitude
band centered at 89.75 degrees north latitude, the second 720
rows are the data for the band centered at 89.25 degrees north
latitude, and so on. Within each band, longitude increases
eastward from the cell centered at 0.25 degrees east longitude
to the cell centered at 359.75 degrees east longitude.
Averaged LEND Data products are composed of averaged normalized
Counting rates and the associated timing, spatial and engineering
information. The ALDs consists of the cumulative background
subtracted and normalized counts of neutrons at the nine LEND
detectors averaged over the above defined."
^STRUCTURE = "LEND_RDR_ALD.FMT"
END_OBJECT
= TABLE
END
OBJECT
= COLUMN
COLUMN_NUMBER = 1
NAME = START_UTC_TIME
DATA_TYPE = CHARACTER
BYTES = 23
START_BYTE = 1
DESCRIPTION = "UTC time at the start of the averaged frames,
stored as yyyy-mm-ddThh:mm:ss.sss."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 2
NAME = STOP_UTC_TIME
DATA_TYPE = CHARACTER
BYTES = 23
START_BYTE = 24
DESCRIPTION = "UTC time at the end of the averaged frames,
stored as yyyy-mm-ddThh:mm:ss.sss."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 3
NAME = LUNARCENTRIC_LATITUDE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 47
UNIT = DEGREE
DESCRIPTION = "Latitude in LUNAR fixed coordinates at the
center of the given map element."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 4
NAME = LUNARCENTIC_EAST_LONGITUDE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 51
UNIT = DEGREE
DESCRIPTION = "Longitude in Lunar fixed coordinates at the
center of the given map element."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 5
NAME = SPARE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 55
UNIT = SECOND
DESCRIPTION = "SPARE FIELD"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER
= 6
NAME = STN1_EXPOSURE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 59
UNIT = "COUNTS/SECOND"
DESCRIPTION = "Exposure time for given map element for given
detector, sec"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 7
NAME = STN1_RATE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 63
DESCRIPTION = "The relative count rate which
is accumulated in given map element by STN1 detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 8
NAME = STN1_ERR
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 67
DESCRIPTION = "The statistical error of relative count rate in
STN1 detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 9
NAME = SETN_EXPOSURE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 71
UNIT = "COUNTS/SECOND"
DESCRIPTION = "Exposure time for given map element for given
detector, sec"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 10
NAME = SETN_RATE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 75
DESCRIPTION = "The relative count rate which
is accumulated in given map element by SETN detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 11
NAME = SETN_ERR
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 79
DESCRIPTION = "The statistical error of relative count rate in
SETN detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 12
NAME = STN2_EXPOSURE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 83
UNIT = "COUNTS/SECOND"
DESCRIPTION = "Exposure time for given map element for given
detector, sec"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 13
NAME = STN2_RATE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 87
DESCRIPTION = "The relative count rate which
is accumulated in given map element by STN2 detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 14
NAME = STN2_ERR
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 91
DESCRIPTION = "The statistical error of relative count rate in
STN2 detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 15
NAME = STN3_EXPOSURE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 95
UNIT = "COUNTS/SECOND"
DESCRIPTION = "Exposure time for given map element for given
detector, sec"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 16
NAME = STN3_RATE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 99
DESCRIPTION = "The relative count rate which
is accumulated in given map element by STN3 detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 17
NAME = STN3_ERR
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 103
DESCRIPTION = "The statistical error of relative count rate in
STN3 detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 18
NAME = CSETN_EXPOSURE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 107
UNIT = "COUNTS/SECOND"
DESCRIPTION = "Exposure time for given map element for given
detector, sec"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 19
NAME = CSETN_RATE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 111
DESCRIPTION = "The relative count rate which
is accumulated in given map element by sum of CSETN1-4 detectors."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 20
NAME = CSETN_ERR
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 115
DESCRIPTION = "The statistical error of relative count rate
in the sum of CSETN1-4 detector."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 21
NAME = SHEN_EXPOSURE
DATA_TYPE = IEEE_REAL
BYTES = 64
START_BYTE = 119
ITEMS = 16
ITEM_BYTES = 4
DESCRIPTION = "Exposure time for given map element for given
channel."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 22
NAME = SHEN_RATE
DATA_TYPE = IEEE_REAL
BYTES = 64
START_BYTE = 183
ITEMS = 16
ITEM_BYTES = 4
DESCRIPTION = "The relative count rate which
is observed in given map element by neutron channel of stilbene
detector. First element is sum of count rate in channels
0 through 5.
Second element is sum of count rate in channel 6
Third element is sum of count rate in channel 7
Fourth element is sum of count rate in channel 8
Fifth element is sum of count rate in channel 9
Sixth element is sum of count rate in channel 10
Seventh element is sum of count rate in channel 11
Eighth element is sum of count rate in channel 12
Ninth element is sum of count rate in channel 13
Tenth element is sum of count rate in channel 14
Eleventh element is sum of count rate in channel 15
Twelfth element is sum of count rate in channels 6 , 7 , 8
Thirteenth element is sum of count rate in channels 9, 10, 11, 12
Fourteenth element is sum of count rate in channels 13, 14
Fifteenth element is sum of count rate in channels 6 through 14
Sixteenth element is sum of count rate in channels 0 through 15"
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 23
NAME = SHEN_ERR
DATA_TYPE = IEEE_REAL
BYTES = 64
START_BYTE = 247
ITEMS = 16
ITEM_BYTES = 4
DESCRIPTION = "The statistical error of relative count rate in
neutron channel of stilbene detector. First element is the
error in channels 0 through 5.
Second element is the error in channel 6
Third element is the error in channel 7
Fourth element is the error in channel 8
Fifth element is the error in channel 9
Sixth element is the error in channel 10
Seventh element is the error in channel 11
Eighth element is the error in channel 12
Ninth element is the error in channel 13
Tenth element is the error in channel 14
Eleventh element is the error in channel 15
Twelfth element is the error in channels 6 , 7 , 8
Thirteenth element is the error in channels 9, 10, 11, 12
Fourteenth element is the error in channels 13, 14
Fifteenth element is the error in channels 6 through 14
Sixteenth element is the error in channels 0 through 15 "
END_OBJECT
= COLUMN
PDS_VERSION_ID
= "PDS3"
DD_VERSION_ID
= PDSCAT1R52 (Data Dictionary Version)
LABEL_REVISION_NOTE
= "2008-01-15, LEND Team, initial
release;"
/***
FILE FORMAT ***/
FILE_RECORDS
= 86400
RECORD_TYPE
= FIXED_LENGTH
RECORD_BYTES
= 82
/***
GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_ID
= "LEND_RDR_ALF_20090201_DAT"
PRODUCT_VERSION_ID
= "1.0"
PRODUCT_CREATION_TIME
= 2009-06-15T19:25:31
PRODUCT_TYPE
= "LEND_RDR_ALF"
SOFTWARE_NAME
= "GEN_LEND_RDR"
SOFTWARE_VERSION_ID
= "1.0.0"
INSTRUMENT_HOST_NAME
= "Lunar Reconnaissance Orbiter"
INSTRUMENT_NAME
= "Lunar Exploration Neutron Detector"
INSTRUMENT_ID
= "LEND"
DATA_SET_ID
= "LRO-L-LEND-4/5-RDR-V1.0"
MISSION_PHASE_NAME
= "PRIMARY MISSION"
TARGET_NAME
= "MOON"
START_TIME
= 2009-02-01T00:00:00
STOP_TIME
= 2009-02-28T23:59:59
^TABLE
= "LEND_RDR_ALF_20090201.DAT"
OBJECT
= TABLE
COLUMNS
= 11
INTERCHANGE_FORMAT = BINARY
ROW_BYTES = 82
ROWS = 86400
DESCRIPTION = "
The ALF product data has been averaged spatially over a
0.5
degree by 0.5 degree grid above and below 80 and -80 degrees
and at a 1.0 degree by 1.0 degree grid elsewhere and temporally
over one earth year (September 15, 2009 to September 14, 2010).
The
ALF product data is presented in a table corresponding to the
0.5 degree by 0.5 degree grid. There are 200 latitude bands and 720
longitude bands above and below 80 and -80 and 360 between, thus
86400 grid cells. Each cell corresponds to
one row in the table. The first 720 rows in the table are the
data for the 0.5 degree latitude band centered at 89.75 degrees
north latitude, the second 720 rows are the data for the band
centered
at 89.5 degrees north latitude, and so on. Within each
band, longitude increases eastward from the cell centered at 0.5
degrees east longitude to the cell centered at 359.5 degrees east
longitude.
Averaged LEND Data products are composed of averaged fluxes
and
the associated timing,
spatial
and engineering information. The ALFs consists of the
orbital neutron fluxes
at
the nine LEND detectors averaged over the above defined.
"
^STRUCTURE = "LEND_RDR_ALF.FMT"
END_OBJECT
= TABLE
END
OBJECT
= COLUMN
COLUMN_NUMBER = 1
NAME = START_UTC_TIME
DATA_TYPE = CHARACTER
BYTES = 23
START_BYTE = 1
DESCRIPTION = "UTC time at the start of the averaged frames,
stored as yyyy-mm-ddThh:mm:ss.sss."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 2
NAME = STOP_UTC_TIME
DATA_TYPE = CHARACTER
BYTES = 23
START_BYTE = 24
DESCRIPTION = "UTC time at the end of the averaged frames,
stored as yyyy-mm-ddThh:mm:ss.sss."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 3
NAME = LUNARCENTRIC_LATITUDE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 47
UNIT = DEGREE
DESCRIPTION = "Latitude in LUNAR fixed coordinates at the
center of the given map element."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 4
NAME = LUNARCENTIC_EAST_LONGITUDE
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 51
UNIT = DEGREE
DESCRIPTION = "Longitude in Lunar fixed coordinates at the
center of the given map element."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 5
NAME = THERMAL
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 55
DESCRIPTION = "Orbital thermal neutron flux in energy range
[< 0.4 eV] (n/cm^2sec)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 6
NAME = EPITHERMAL_FLUX1
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 59
DESCRIPTION = "Orbital epithermal neutron flux in energy range
[0,4 eV - 100 eV] (n/cm^2sec)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 7
NAME = EPITHERMAL_FLUX2
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 63
DESCRIPTION = "Orbital epithermal neutron flux in energy range
[0.10 keV - 10 keV] (n/cm^2sec)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 8
NAME = EPITHERMAL_FLUX3
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 67
DESCRIPTION = "Orbital epithermal neutron flux in energy range
[10 keV - 1.0 MeV] (n/cm^2sec)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 9
NAME = FAST_FLUX1
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 71
DESCRIPTION = "Orbital fast neutron flux in energy range
[1 MeV - 2.5 MeV] (n/cm^2sec)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 10
NAME = FAST_FLUX2
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 75
DESCRIPTION = "Orbital fast neutron flux in energy range
[2.5 MeV - 7.5 MeV] (n/cm^2sec)."
END_OBJECT
= COLUMN
OBJECT
= COLUMN
COLUMN_NUMBER = 11
NAME = FAST_FLUX3
DATA_TYPE = IEEE_REAL
BYTES = 4
START_BYTE = 79
DESCRIPTION = "Orbital fast neutron flux in energy range
[7.5 MeV - 10 MeV] (n/cm^2sec)."
END_OBJECT
= COLUMN