urn:nasa:pds:mess_ns_raw:data_edr:ns_spe2005139zzz_dat 1.0 1.10.1.0 Product_Observational 2018-06-08 1.0 PDS4 migrated product 2005-05-19T00:01:39.000Z 2005-05-19T23:59:39.000Z Calibration Raw 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 Earth Planet urn:nasa:pds:context:target:planet.earth data_to_target Earth Cruise 1/024948043 1/025034323 ns_spectra pipe-ns2edr 1.0 ns_spe2005139zzz.dat 2007-02-17T06:09:58Z 0 720 This table contains one set of spectra data, status, and software event counters collected from the MESSENGER Neutron Spectrometer (NS). 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. 25 5 378 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. sensor_cfg_changed 4 11 UnsignedMSB2 2 Sensor Configuration Changed Flag. =0 config unchanged, =1 config changed. lg_safing 5 13 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 6 15 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 7 17 UnsignedMSB2 2 The Log Compression flag 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. 1 32 1 0 19 64 singles_lg1 1 1 UnsignedMSB2 2 Spectrum is a 32 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 32 1 0 83 64 singles_lg2 1 1 UnsignedMSB2 2 Spectrum is a 32 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 0 147 128 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 8 1 0 275 16 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 8 1 0 291 16 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_START and LATE_CAPTURE_END of the NS Status EDR, and no additional events in the event set. lg1_raw_events 8 307 UnsignedMSB4 4 LG1 Raw event software counter. lg2_raw_events 9 311 UnsignedMSB4 4 LG2 Raw event software counter. bp_raw_events 10 315 UnsignedMSB4 4 BP Raw event software counter. sw_total_events 11 319 UnsignedMSB4 4 Total events processed by software in the current accumulation period. dead_time 12 323 UnsignedMSB4 4 Dead time software counter. Units are in microseconds/16. Multiply by 16 to get back to microseconds. lg1_reset 13 327 UnsignedMSB4 4 LG1 charge reset software counter. lg2_reset 14 331 UnsignedMSB4 4 LG2 charge reset software counter. bp_reset 15 335 UnsignedMSB4 4 BP charge reset software counter. bpp_lgxs 16 339 UnsignedMSB4 4 Software counter for prompt pulse in BP detector with delayed secondary pulse in LGx detector (x=1 or 2). lg1_over_range 17 343 UnsignedMSB4 4 LG1 prompt over range software counter (pulse height larger than maximum specified). lg2_over_range 18 347 UnsignedMSB4 4 LG2 prompt over range software counter (pulse height larger than maximum specified). bp_over_range 19 351 UnsignedMSB4 4 BP prompt over range software counter (pulse height larger than maximum specified). valid_tc_event 20 355 UnsignedMSB4 4 Time-correlated software counter: non-coincidence and not over range events. lg1_bpp_coin 21 359 UnsignedMSB4 4 LG1/BPP coincidence event software counter. lg2_bpp_coin 22 363 UnsignedMSB4 4 LG2/BPP coincidence event software counter. lg1_bpp_lg2_coin 23 367 UnsignedMSB4 4 LG1/BPP/LG2 coincidence event software counter. lg1_bps_coin 24 371 UnsignedMSB4 4 LG1/BPS coincidence event software counter. lg2_bps_coin 25 375 UnsignedMSB4 4 LG2/BPS coincidene event software counter. ns_spe2005139zzz.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed