PDS_VERSION_ID = PDS3 /* FILE CHARACTERISTICS DATA ELEMENTS */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 2880 /* FITS standard record length */ FILE_RECORDS = 108 FILE_NAME = "RA_DARK_4000V.FIT" DATA_FORMAT = FITS /* INSTRUMENT AND MISSION DESCRIPTIVE DATA ELEMENTS */ INSTRUMENT_ID = "ALICE" INSTRUMENT_NAME = "ALICE" INSTRUMENT_TYPE = "ULTRAVIOLET SPECTROMETER" INSTRUMENT_HOST_ID = "RO" INSTRUMENT_HOST_NAME = "ROSETTA-ORBITER" MISSION_ID = "ROSETTA" MISSION_NAME = "INTERNATIONAL ROSETTA MISSION" /* DATA OBJECT POINTERS IDENTIFICATION DATA ELEMENTS */ ^HEADER = ("RA_DARK_4000V.FIT",1) ^IMAGE = ("RA_DARK_4000V.FIT",12) ^ERROR_HEADER = ("RA_DARK_4000V.FIT",58) ^ERROR_IMAGE = ("RA_DARK_4000V.FIT",59) ^DARK_RATE_HEADER = ("RA_DARK_4000V.FIT",105) ^DARK_RATE_TABLE = ("RA_DARK_4000V.FIT",106) /* PRODUCT, DATA SET, AND VOLUME DATA ELEMENTS */ PRODUCT_ID = "RA_DARK_4000V" PRODUCT_TYPE = REDR /* CODMAC Data Level 3 */ PRODUCT_CREATION_TIME = 2016-06-03 DATA_SET_ID = "RO-C/CAL-ALICE-3-ESC2-V1.0" PRODUCER_ID = "ROSETTA_ALICE" PRODUCER_FULL_NAME = "ANDREW J. STEFFL" PRODUCER_INSTITUTION_NAME = "SOUTHWEST RESEARCH INSTITUTE" /* DATA OBJECT DEFINITIONS */ OBJECT = HEADER BYTES = 31680 /* RECORD_BYTES x RECORDS */ HEADER_TYPE = FITS INTERCHANGE_FORMAT = BINARY RECORDS = 11 DESCRIPTION = " FITS header for the Rosetta-Alice dark count calibration file." END_OBJECT = HEADER EXPOSURE_DURATION = 437073.000 /* From FITS header [seconds] */ OBJECT = IMAGE LINE_SAMPLES = 1024 /* FITS NAXIS1 keyword */ LINES = 32 /* FITS NAXIS2 keyword */ SAMPLE_BITS = 32 SAMPLE_TYPE = IEEE_REAL AXIS_ORDER_TYPE = "FIRST_INDEX_FASTEST" LINE_DISPLAY_DIRECTION = "UP" SAMPLE_DISPLAY_DIRECTION = "RIGHT" DESCRIPTION = " This file contains the dark count rate for the R-Alice detector, as measured by in-flight exposures with the instrument aperture door closed (i.e. darks) and the HV level set to -4000 V. Units are counts per second per pixel. The individual files used to create this calibration product are listed in the FITS header." END_OBJECT = IMAGE OBJECT = ERROR_HEADER BYTES = 2880 /* RECORD_BYTES x RECORDS */ HEADER_TYPE = FITS INTERCHANGE_FORMAT = BINARY RECORDS = 1 DESCRIPTION = " FITS header for the Rosetta-Alice dark count calibration file." END_OBJECT = ERROR_HEADER OBJECT = ERROR_IMAGE LINE_SAMPLES = 1024 /* FITS NAXIS1 keyword */ LINES = 32 /* FITS NAXIS2 keyword */ SAMPLE_BITS = 32 SAMPLE_TYPE = IEEE_REAL AXIS_ORDER_TYPE = "FIRST_INDEX_FASTEST" LINE_DISPLAY_DIRECTION = "UP" SAMPLE_DISPLAY_DIRECTION = "RIGHT" DESCRIPTION = " This extension contains the statistical uncertainty for each pixel in the composite dark image" END_OBJECT = ERROR_IMAGE OBJECT = DARK_RATE_HEADER BYTES = 2880 /* RECORD_BYTES x RECORDS */ HEADER_TYPE = FITS INTERCHANGE_FORMAT = BINARY RECORDS = 1 DESCRIPTION = " FITS header for the Rosetta-Alice dark count calibration file." END_OBJECT = DARK_RATE_HEADER OBJECT = DARK_RATE_TABLE INTERCHANGE_FORMAT = BINARY ROWS = 241 COLUMNS = 3 ROW_BYTES = 24 OBJECT = COLUMN NAME = "ET" DATA_TYPE = IEEE_REAL START_BYTE = 1 BYTES = 8 DESCRIPTION = " Ephemeris Time (seconds)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DARK_RATE" DATA_TYPE = IEEE_REAL START_BYTE = 9 BYTES = 8 DESCRIPTION = " Summed dark rate for all detector rows but 17 (counts / second)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ROW17_DARK_RATE" DATA_TYPE = IEEE_REAL START_BYTE = 17 BYTES = 8 DESCRIPTION = " Summed dark rate for detector row 17 (counts / second)" END_OBJECT = COLUMN END_OBJECT = DARK_RATE_TABLE END