urn:nasa:pds:mess_ns_raw:data_edr:ns_fsp2012144zzz_dat 1.0 1.10.1.0 Product_Observational 2018-06-08 1.0 PDS4 migrated product 2012-05-23T00:00:07Z 2012-05-23T23:59:40Z MESSENGER Mission urn:nasa:pds:context:investigation:mission.messenger data_to_investigation MESSENGER Spacecraft urn:nasa:pds:context:instrument_host:spacecraft.mess is_instrument_host Neutron Spectrometer Instrument urn:nasa:pds:context:instrument:ns.mess is_instrument Mercury Planet urn:nasa:pds:context:target:planet.mercury data_to_target Mercury Orbit Year 2 1/246218673 1/246305046 ns_fullspectra pipe-ns2edr 1.0 ns_fsp2012144zzz.dat 2012-05-24T02:54:48Z 0 1995 This table contains one set of spectra data, status, and software event counters collected from the MESSENGER Neutron Spectrometer (NS) and telemetered via the NS Full Science Data packet. A set is defined as all data with time stamps corresponding to a given Earth day. Additional details are contained in the EDR SIS document. 33 5 1514 met 1 1 UnsignedMSB4 4 Time tag in seconds of the start of the associated Reporting/Accumulation period. orbit_number 2 5 UnsignedMSB2 2 Orbit number is a unique identifier for a given orbit of the MESSENGER spacecraft around Mercury. Orbit number is defined as starting at apoherm and is calculated using the MET value and the appropriate SPICE kernels. Orbit numbering does not start until MESSENGER performs the Mercury orbit insertion. Until that time the value for orbit number is 0. actual_accum 3 7 UnsignedMSB4 4 Actual accumulation period for software counters and energy histograms. gcr_mode 4 11 UnsignedMSB2 2 Galactic Cosmic Ray (GCR) Coincidence mode. =1 Doubles, =2 Triples, =3 Either. sensor_cfg_changed 5 13 UnsignedMSB2 2 Sensor Configuration Changed Flag. =0 config unchanged, =1 config changed. lg_safing 6 15 UnsignedMSB2 2 Maximum Lithium Glass (LG) safing level reached during current reporting period. =0 nominal, =1 seeking, =2 level1_rampdown, =3 level1_waiting, =4 level1_seeking, =5 level2_safing. bp_safing 7 17 UnsignedMSB2 2 Maximum safing level reached during current reporting period for the Borrated Plastic (BP) sensor. =0 nominal, =1 seeking, =2 level1_rampdown, =3 level1_waiting, =4 level1_seeking, =5 level2_safing. log_compression 8 19 UnsignedMSB2 2 Identifies when the log compression data mode has been enabled. The NS flight software uses 32-bit to 16-bit log compression on software counters when the log compression data mode is enabled. See the NS Flight Software document for details on the log compression algorithm. =0 no log compression. =1 log compression enabled. sensor_temp 9 21 UnsignedMSB2 2 Sensor Temperature, External Channel 4 (LVPS). temp_monitor 10 23 UnsignedMSB2 2 LVPS Temperature monitor. lg1_scale 11 25 UnsignedMSB2 2 LG1 singles spectrum scale. lg2_scale 12 27 UnsignedMSB2 2 LG2 singles spectrum scale. bp_scale 13 29 UnsignedMSB2 2 BP singles spectrum scale. tc_scale 14 31 UnsignedMSB2 2 Time-correlated spectra scale. 1 64 1 0 33 128 singles_lg1 1 1 UnsignedMSB2 2 Spectrum is a 64 channel histogram of event energies that arrived as a single event with no time correlation to the other sensors. LG1 is the Lithium Glass 1 sensor. 2 64 1 0 161 128 singles_lg2 1 1 UnsignedMSB2 2 Spectrum is a 64 channel histogram of event energies that arrived as a single event with no time correlation to the other sensors. LG2 is the Lithium Glass 2 sensor. 3 64 1 0 289 128 singles_bp_spectra 1 1 UnsignedMSB2 2 BP is the Borated Plastic sensor. Spectrum is a 64 channel histogram of event energies that arrived as a solo event with respect to the other sensors. 4 256 1 0 417 512 tc_early 1 1 UnsignedMSB2 2 The time-correlated early spectrum is a histogram of prompt BP events that had a delayed BP event occurring during the early capture window, as defined by commandable software parameters provided in columns Early_Capture_Start and Early_Capture_End of the NS Status EDR, and no additional events in the event set. 5 256 1 0 929 512 tc_late 1 1 UnsignedMSB2 2 The time-correlated late spectrum is a histogram of prompt BP events that had a delayed BP event occurring during the late capture window, as defined by commandable software parameters provided in columns Late_Capture_Strat and Late_Capture_End of the NS Status EDR, and no additional events in the event set. lg1_raw_events 15 1441 UnsignedMSB4 4 LG1 raw event software counter. lg2_raw_events 16 1445 UnsignedMSB4 4 LG2 raw event software counter. bp_raw_events 17 1449 UnsignedMSB4 4 BP raw event software counter. sw_total_events 18 1453 UnsignedMSB4 4 Total events processed by software in the current accumulation period. dead_time 19 1457 UnsignedMSB4 4 Dead time software counter. Units are in microseconds/16. Multiply by 16 to get back to microseconds. lg1_reset 20 1461 UnsignedMSB4 4 LG1 charge reset software counter. lg2_reset 21 1465 UnsignedMSB4 4 LG2 charge reset software counter. bp_reset 22 1469 UnsignedMSB4 4 BP charge reset software counter. bpp_lgxs 23 1473 UnsignedMSB4 4 Software counter for prompt pulse in BP detector with delayed secondary pulse in LGx detector (x=1 or 2). lg1_over_range 24 1477 UnsignedMSB4 4 LG1 prompt over range software counter (pulse height larger than maximum specified). lg2_over_range 25 1481 UnsignedMSB4 4 LG2 prompt over range software counter (pulse height larger than maximum specified). bp_over_range 26 1485 UnsignedMSB4 4 BP prompt over range software counter (pulse height larger than maximum specified). valid_tc_event 27 1489 UnsignedMSB4 4 Time-correlated software counter: non-coincidence and not over range events. lg1_bpp_coin 28 1493 UnsignedMSB4 4 LG1/BPP coincidence event software counter. lg2_bpp_coin 29 1497 UnsignedMSB4 4 LG2/BPP coincidence event software counter. lg1_bpp_lg2_coin 30 1501 UnsignedMSB4 4 LG1/BPP/LG2 coincidence event software counter. tc_early_counter 31 1505 UnsignedMSB4 4 Summation of all channels of early time-correlated spectra. tc_late_counter 32 1509 UnsignedMSB4 4 Summation of all channels of late time-correlated spectra. event_mode_data_len 33 1513 UnsignedMSB2 2 Event mode data length. A value greater than zero indicates that events were observed by the instrument. A corresponding NS Full Science Events EDR will archive the event data. ns_fsp2012144zzz.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed