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MESSENGER: NS
Derived
Data Records
The MESSENGER NS Derived Data Records (DDRs) consist of neutron count rate
(NCR) and neutron composition (NCP) data. The NCR data products contain net
neutron count rates from the LG1, LG2, and BP sensors and uncertainties from
each of these sensors. The NCP data product contains fast and epithermal count
rates as a function of latitude, along with simulated count rates for the
cases of no hydrogen and for a thick layer of 100 wt. percent water ice in all
radar bright regions. Each DDR is organized as an ASCII table, along with a
detached ASCII text PDS label file. The NCR files are grouped in directories by Earth year and
month.
The NS DDRs are stored along with the
NS Calibrated Data Records (CDRs) on PDS
volume MESSNS_2101. Please see below for
direct access to the volume. Only
directories pertaining to the DDRs are
listed below.
Alternatively, to search the archive for
data that meet particular criteria, e.g.
time and location, use the
Mercury Orbital Data Explorer (ODE).
|
Root directory |
Top-level directory |
|
AAREADME.TXT |
Introduction to the
archive |
|
ERRATA.TXT |
Notes and errata |
|
CALIB
directory |
Calibration files |
|
CATALOG
directory |
Information about
the archive in the PDS Catalog |
|
DATA/DDR directory |
The NCP files
(ns_ddr_ncp.tab/lbl) |
|
DATA/DDR/2015
directory |
NS NCRs for data acquired from
Jan. 1, 2015 through Apr. 30, 2015 |
|
DATA/DDR/2014 directory |
NS NCRs for data acquired from
Jan. 1, 2014 through Dec. 31, 2014 |
|
DATA/DDR/2013
directory |
NS NCRs for data acquired from
Jan. 1, 2013 through Dec. 31, 2013 |
|
DATA/DDR/2012
directory |
NS NCRs for data acquired from
Jan. 1, 2012 through Dec. 31, 2012 |
|
DATA/DDR/2011
directory |
NS NCRs for data acquired from
Mar. 26, 2011 through Dec. 31, 2011 |
|
DOCUMENT directory |
Documentation needed to understand
the NS CDR/DDR data products |
|
INDEX
directory |
Index of all
products in the archive |
|
LABEL directory |
Files that describe the
format of the NS tables |
|
