PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 98 FILE_RECORDS = 156 ^TABLE = 138 MISSION_NAME = "NEW HORIZONS" DATA_SET_ID = "NH-X-SDC-2-LAUNCH-V3.0" START_TIME = 2006-01-17T00:00:00 /* Nominal NH Launch */ STOP_TIME = "N/A" PRODUCT_ID = "SDC_CAL_MATRIX_COEF_CH05" PRODUCER_INSTITUTION_NAME = "SOUTHWEST RESEARCH INSTITUTE" PRODUCT_CREATION_TIME = 2013-12-06T00:00:00 INSTRUMENT_NAME = " STUDENT DUST COUNTER " INSTRUMENT_HOST_NAME = "NEW HORIZONS" INSTRUMENT_ID = "SDC" TARGET_NAME = "N/A" OBJECT = TABLE DESCRIPTION = " TABLE of polynomial coefficients Ci, for channel 05 of the SDC instrument at 4 temperatures, fitting the response relationship log10( Q(DN) )= C0 + C1 x DN + C2 x DN^2 + ... + C18 x DN^18 where Q is an input charge to the SDC instrument channel, in units of 'Number of equivalent electrons,' and DN (Data Number) is the 16-bit digital output that results from input Q. The values in this TABLE apply to one SDC channel (05), and each COLUMN corresponds to one temperature. The first ROW contains coefficients C0, and the last ROW contains coefficients C18. There are typically fewer non-zero coefficients than ROWs in the TABLE. This TABLE is one of several archiving calibration parameters used in the calibration of SDC data. Details of the calibration may be found in the SOC ICD document, which was delivered with this data set. Genesis of the calibration data (from the ICD): In a temperature controlled environment, the electronics from the end of the PVDF to the DN in the raw data were calibrated, at each of 4 calibration box temperatures and for each of the 14 channels. This was done by injecting 19 (actually 21; see the ICD) fixed-amplitude charge pulses 100 times into a channel and recording the DN value each time. From those recorded values, the average DN (DNavg) and its standard deviation (SIG) at each charge pulse amplitude, box temperature and channel were calculated. Then, for each box temperature and channel, a 9th order polynomial fit of Q(DNavg) was derived. Finally, these 3 sets of values (the polynomial coefficients, DNavg, and SIG) were stored in a matrix. This matrix contains all information required to calculate the charge equivalent to a DN as a function of box temperature and channel (detector), as well as the uncertainty in that calculated charge value. That matrix has been broken out into forty-two PDS ASCII TABLEs; this TABLE is one of those forty-two. " NAME = "SDC_CAL_MATRIX_COEF_CH05" INTERCHANGE_FORMAT = ASCII ROW_BYTES = 98 ROWS = 19 COLUMNS = 4 OBJECT = COLUMN NAME = "SDC_CAL_COEF_CH05_49_9" COLUMN_NUMBER = 1 DATA_TYPE = ASCII_REAL FORMAT = "E24.16" START_BYTE = 1 BYTES = 24 UNIT = "N/A" DESCRIPTION = " Calibration polynomial coefficients for SDC instrument channel 05 from the ground calibration at temperature 49.9 Celcius. " MISSING_CONSTANT = 0.0 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SDC_CAL_COEF_CH05_40_0" COLUMN_NUMBER = 2 DATA_TYPE = ASCII_REAL FORMAT = "E24.16" START_BYTE = 25 BYTES = 24 UNIT = "N/A" DESCRIPTION = " Calibration polynomial coefficients for SDC instrument channel 05 from the ground calibration at temperature 40.0 Celcius. " MISSING_CONSTANT = 0.0 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SDC_CAL_COEF_CH05_34_2" COLUMN_NUMBER = 3 DATA_TYPE = ASCII_REAL FORMAT = "E24.16" START_BYTE = 49 BYTES = 24 UNIT = "N/A" DESCRIPTION = " Calibration polynomial coefficients for SDC instrument channel 05 from the ground calibration at temperature 34.25 Celcius. " MISSING_CONSTANT = 0.0 END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SDC_CAL_COEF_CH05_M7_1" COLUMN_NUMBER = 4 DATA_TYPE = ASCII_REAL FORMAT = "E24.16" START_BYTE = 73 BYTES = 24 UNIT = "N/A" DESCRIPTION = " Calibration polynomial coefficients for SDC instrument channel 05 from the ground calibration at temperature -7.1 Celcius. 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