PDS_VERSION_ID = PDS3 /* File Characteristics */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 213 FILE_RECORDS = 1 /* Data Object Pointers */ ^TABLE = "ONSURNAS.TAB" /* Identification Keywords */ DATA_SET_ID = "NEAR-A-GRS-3-EDR-EROS/SURFACE-V1.0" PRODUCT_NAME = "GRS NAI ON-SURFACE ANCILLARY DATA" PRODUCT_ID = "ONSURNAS" INSTRUMENT_HOST_NAME = "NEAR EARTH ASTEROID RENDEZVOUS" INSTRUMENT_NAME = "GAMMA RAY SPECTROMETER" TARGET_NAME = "EROS" START_TIME = 2001-02-19T16:59:24 STOP_TIME = 2001-02-28T16:53:35 PRODUCT_CREATION_TIME = 2001-08-15 /* Peer Review Date */ SPACECRAFT_CLOCK_START_COUNT = 158012184 SPACECRAFT_CLOCK_STOP_COUNT = 158789436 DESCRIPTION = "This file contains the Near Earth Asteroid Rendezvous (NEAR) Gamma-ray spectrometer Level-3 ancillary data specific to the (NAI, ANTI, NAI1 and NAI2) spectra for the on-asteroid GRS instrument sequence. " /* Data Object Descriptions */ OBJECT = TABLE ROWS = 1 ROW_BYTES = 213 INTERCHANGE_FORMAT = ASCII COLUMNS = 21 DESCRIPTION = "The ancillary data for the integrated NAI (Sodium Iodide) spectra collected and integrated from the surface of 433Eros asteroid by the NEAR Gamma-ray spectrometer. The data comprise the parameters that describe the engineering and spatial conditions under which the spectra were collected. " OBJECT = COLUMN COLUMN_NUMBER = 1 DATA_TYPE = ASCII_INTEGER NAME = START_NAI_MET1 DESCRIPTION = "Start Mission Event Time (MET) of NAI 1st integration of 2 collected (Seconds from start of mission)" START_BYTE = 1 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 DATA_TYPE = ASCII_INTEGER NAME = END_NAI_MET1 DESCRIPTION = "End Mission Event Time (MET) of NAI 1st integration of 2 collected (Seconds from start of mission)" START_BYTE = 12 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 DATA_TYPE = ASCII_INTEGER NAME = START_NAI_MET2 DESCRIPTION = "Start Mission Event Time (MET) of NAI 2nd integration of 2 collected (Seconds from start of mission)" START_BYTE = 23 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 DATA_TYPE = ASCII_INTEGER NAME = END_NAI_MET2 DESCRIPTION = "End Mission Event Time (MET) of NAI 2nd integration of 2 collected (Seconds from start of mission) " START_BYTE = 34 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 DATA_TYPE = ASCII_INTEGER NAME = INTEGR_TIME_1 DESCRIPTION = "Duration of Integration Time 1 (seconds)" START_BYTE = 45 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 DATA_TYPE = ASCII_INTEGER NAME = INTEGR_TIME_2 DESCRIPTION = "Duration of Integration Time 2 (seconds)" START_BYTE = 56 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 DATA_TYPE = ASCII_INTEGER NAME = TOTAL_NAI_INTG_TIME DESCRIPTION = "Total Integration Time of the 2 integrations summed for NAI spectra in (Seconds) " START_BYTE = 67 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 DATA_TYPE = ASCII_REAL NAME = SURFACE_LATITUDE DESCRIPTION = "The Surface Latitude of the NEAR Spacecraft during the Eros on-surface GRS instrument integrations (between 2001:045 and 2001:059) West longitude (degrees) see Verveka et. al. 2001" START_BYTE = 78 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 DATA_TYPE = ASCII_REAL NAME = SURFACE_LONGITUDE DESCRIPTION = "The Surface Longitude of the NEAR Spacecraft during the Eros on-surface GRS instrument integrations (between 2001:045 and 2001:059) West longitude see Verveka et. al. 2001" START_BYTE = 86 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 DATA_TYPE = ASCII_REAL NAME = GRS_INST_ATTITUDE DESCRIPTION = "The attitude of the GRS instrument boresite with respect to the estimated surface normal" START_BYTE = 94 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 DATA_TYPE = ASCII_REAL NAME = NAI_GAIN DESCRIPTION = "The gain of the NAI instrument during on surface integrations in keV/channel" START_BYTE = 102 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 DATA_TYPE = ASCII_REAL NAME = NAI_ZERO DESCRIPTION = "The zero of the NAI instrument during on surface integrations in keV" START_BYTE = 110 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 DATA_TYPE = ASCII_INTEGER NAME = TOTAL_NAI_LIVETIME DESCRIPTION = "Total LiveTime of the NAI spectra = 0.92 * Integration time (Seconds)" START_BYTE = 118 BYTES = 10 FORMAT = "I10" UNIT = SECONDS END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 DATA_TYPE = ASCII_INTEGER NAME = TOTAL_INTEG_CNTS_NAI DESCRIPTION = "Total Counts collected in the NAI spectrum for the 2 summed integrations summed (Counts)" START_BYTE = 129 BYTES = 10 FORMAT = "I10" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 DATA_TYPE = ASCII_INTEGER NAME = TOTAL_INTEG_CNTS_ANTI DESCRIPTION = "Total Counts collected in the NAI spectrum for the 2 summed integrations summed (Counts)" START_BYTE = 140 BYTES = 10 FORMAT = "I10" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 DATA_TYPE = ASCII_INTEGER NAME = TOTAL_INTEG_CNTS_NAI1 DESCRIPTION = "Total Counts collected in the NAI 1 Escape spectrum for the 2 summed integrations summed (Counts)" START_BYTE = 151 BYTES = 10 FORMAT = "I10" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 DATA_TYPE = ASCII_INTEGER NAME = TOTAL_INTEG_CNTS_NAI2 DESCRIPTION = "Total Counts collected in the NAI 2 Escape spectrum for the 2 summed integrations summed (Counts)" START_BYTE = 162 BYTES = 10 FORMAT = "I10" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 DATA_TYPE = ASCII_REAL NAME = COUNT_RATE_NAI DESCRIPTION = "The Count rate for the NAI spectrum (Counts/Sec)" START_BYTE = 173 BYTES = 9 FORMAT = "F9.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 DATA_TYPE = ASCII_REAL NAME = COUNT_RATE_ANTI DESCRIPTION = "The Count rate for the Anti-Coincidence spectrum (Counts/Sec) " START_BYTE = 183 BYTES = 9 FORMAT = "F9.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 20 DATA_TYPE = ASCII_REAL NAME = COUNT_RATE_NAI1 DESCRIPTION = "The Count rate for the NAI 1 Escape spectrum (Counts/Sec) " START_BYTE = 193 BYTES = 9 FORMAT = "F9.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 21 DATA_TYPE = ASCII_REAL NAME = COUNT_RATE_NAI2 DESCRIPTION = "The Count rate for the NAI 2 Escape spectrum (Counts/Sec) " START_BYTE = 203 BYTES = 9 FORMAT = "F9.4" END_OBJECT = COLUMN END_OBJECT = TABLE END