The SWIFT BAT Software Guide Version 6.3 30 ... - HEASARC - Nasa

A.8. HOUSEKEEPING FILES 79
A.8 Housekeeping Files
A.8.1 Americium Survey DPHs
Americium tagged source surveys (code “amcb,” suffix “dph”). Tagged calibration source events
are segregated from normal events and binned in separate DPHs. The format is the same as the
normal survey DPH, but the duration is much longer (typically 90 minutes). And since the tagged
source position is fixed with respect to the detector plane, Am241 surveys can span pointings.
These are used by the BAT team to derive the absolute energy calibration of the experiment.
A.8.2 Americium Block Spectra
Americium block spectra (code “amcb,” suffix “fits”) are eighty-channel histograms of tagged source
events reported for each of the sixteen blocks. These are produced on the same time scale as the
normal surveys (as opposed to Am241 surveys).
A.8.3 Calibration Pulser Maps
Calibration maps (code “cb,” suffix “dph”) contain the raw results from the pulser calibration runs
used in on-board calibration. They are used by the BAT team to check the on-board calibration.
Also if a series of more than two calibrations is commanded, the resulting calibration maps can be
used to determine the nonlinearity of the energy calibration.
A.8.4 Detector Array Panel (DAP) Housekeeping
The DAP houskeeping file (code “dp”) contains high level housekeeping values that pertain to the
entire array.
Layout. DAP Housekeeping EXTNAME = ‘DAP HK’
Name Format [Units] Comment
TIME 1D [s] Mission TIME in seconds
BStatus DMRcvrOver (16,16)X DM Reciever Overflow Flags
BStatus CtrlSigStat (16,16)X Control Signal Status
BStatus DMRDataErr (16,16)X DM Receiver Parity/Data Code Error
BStatus DataStat (16,16)X ADC Latchup / Overflow / FIFO Status
BStatus DMTimeOut (16,16)X DM Timeout/Invalid Command Flags
BStatus SPWStatA (16,16)X SpaceWire Status Register A
BStatus SPWOverErr 16B SpaceWire Overflow Error Count
BStatus SPWEOP2Err 16B SpaceWire EOP2 Error Count
BStatus SPWFrmgErr 16B SpaceWire Framing Error Count
BStatus SPWStatB (16,16)X SpaceWire Status Register B
BStatus SPWClrRErr 16B SpaceWire Cleared Receiver Error Ct
BStatus SPWClrPErr 16B SpaceWire Clear Partial Pkt Error Ct
BBiasVolt IbPre 16I [uA] IbPre Bias Voltage ADC Value
BBiasVolt IbSha 16I [uA] IbSha Bias Voltage ADC Value
BBiasVolt IbOTA 16I [uA] IbOTA Bias Voltage ADC Value
BBiasVolt IbDAC 16I [uA] IbDAC Bias Voltage ADC Value
BBiasVolt IbTDB 16I [uA] IbTDB Bias Voltage ADC Value
BBiasVolt IbRWB 16I [uA] IbRWB Bias Voltage ADC Value