PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 68 FILE_RECORDS = 2017 DATA_SET_ID = "VEGA2-C-DUCMA-3-RDR-HALLEY-V1.0" TARGET_NAME = HALLEY ^TABLE = "DVG2CLN1.TAB" OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 2017 ROW_BYTES = 68 COLUMNS = 11 DESCRIPTION = "This file includes the encounter data without any information about status commands and temperature variations. The noise spikes and accidental calibration events have been removed. This file is designed for easy data analysis and lists simply the time of an event in seconds and the total counts in each threshold, M4-M1, the anticoincident events, M4NV-M1NV, and the noise events, VL and VH, all obtained during the time interval. The mass thresholds for the Ducma detectors are: M1 1.5 X 10**-13 g M2 5.6 x 10**-11 g M3 1.6 x 10**-09 g M4 4.0 x 10**-08 g For Vega-2, the conversion of Blissi to UT time is as follows: a Blissi value of 11242 = 07:20:00 UT on March 9, 1986." NOTE = "Although undocumented, the value '9999' appears to be used in the count fields to indicate invalid data." /* Column 1: Clock time */ OBJECT = COLUMN NAME = "BLISSI_CLOCK_TIME" BYTES = 5 START_BYTE = 1 DATA_TYPE = ASCII_INTEGER FORMAT = "I5" UNIT = S DESCRIPTION= "Blissi clock, as described in the Ducma Technical Manual" END_OBJECT = COLUMN /* Column 2: M4 counts */ OBJECT = COLUMN NAME = "M4" BYTES = 4 START_BYTE = 8 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Dust event count at the M4 threshold" END_OBJECT = COLUMN /* Column 3: M3 counts */ OBJECT = COLUMN NAME = "M3" BYTES = 4 START_BYTE = 14 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Dust event count at the M3 threshold" END_OBJECT = COLUMN /* Column 4: M2 counts */ OBJECT = COLUMN NAME = "M2" BYTES = 4 START_BYTE = 20 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Dust event count at the M2 threshold" END_OBJECT = COLUMN /* Column 5: M1 counts */ OBJECT = COLUMN NAME = "M1" BYTES = 4 START_BYTE = 26 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Dust event count at the M1 threshold" INVALID = 9999 END_OBJECT = COLUMN /* Column 6: M4 anticoincident counts */ OBJECT = COLUMN NAME = "M4NV" BYTES = 4 START_BYTE = 32 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Anticoincident counts at the M4 threshold" END_OBJECT = COLUMN /* Column 7: M3 anticoincident counts */ OBJECT = COLUMN NAME = "M3NV" BYTES = 4 START_BYTE = 38 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Anticoincident counts at the M3 threshold" END_OBJECT = COLUMN /* Column 8: M2 anticoincident counts */ OBJECT = COLUMN NAME = "M2NV" BYTES = 4 START_BYTE = 44 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Anticoincident counts at the M2 threshold" END_OBJECT = COLUMN /* Column 9: M1 anticoincident counts */ OBJECT = COLUMN NAME = "M1NV" BYTES = 4 START_BYTE = 50 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "Anticoincident counts at the M1 threshold" END_OBJECT = COLUMN /* Column 10: V detector counts */ OBJECT = COLUMN NAME = "VL" BYTES = 4 START_BYTE = 56 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "V detector (noise) counts" END_OBJECT = COLUMN /* Column 11: V high discriminator detector counts */ OBJECT = COLUMN NAME = "VH" BYTES = 4 START_BYTE = 61 DATA_TYPE = ASCII_INTEGER FORMAT = "I4" DESCRIPTION= "High-discrimination V detector (noise) counts" INVALID = 9999 END_OBJECT = COLUMN /* end of table */ END_OBJECT = TABLE END