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

Partial coding Indicates the fractional illumination of the detector array by an off-axis source.
Phi For a position in the BAT field of view, the longitude of the position, as measured from the
BAT X axis.
PSF Point spread function, the spatial response of the instrument to an incident point source.
Pulser Electronic device used to calibrate the BAT electronic pulse height scale. Periodic pulser
calibration cycles are used to produce a calibration pulser map (trend product). These maps
are used to update the gain/offset map.
Quadrant Rates A type of light curve produced by the BAT, which contains the count rates in
each of four geographic quadrants of the detector array (also “quad rates”).
Quality Map Detector map produced on the ground, which combines information about disabled/enabled
detectors, and noisy detectors discovered in post-processing.
SAA South Atlantic Anomaly, region of high ionizing radiation in low earth orbit. The BAT does
not typically produce science data during SAA passes.
Sandwich same as DM Side.
Segment see Observation Segment.
Snapshot Swift name for a single contiguous pointed observation at a target, usually between 5
and 20 minutes in duration. See also “Observation Segment.”
Spacewire communication bus connecting BAT blocks to the Image Processor.
SSR Solid State Recorder, the spacecraft on-board storage system.
Survey image data collected while waiting for the next GRB (in the form of DPHs).
Tagged Source Radioactive 241 Am calibration source used for on-board BAT calibration.
Target number a unique number assigned to Swift observations of a single object, such as a
gamma-ray burst or other astrophysical object. Long or disjoint observations may be split
into different observation segments with different segment numbers, but they should all have
the same target number.
Theta For a position in the BAT field of view, the angle between the BAT boresight and the
position (i.e., co-latitude).
UVOT Ultra-Violet Optical Telescope, the UV/Optical instrument aboard Swift.
XRT X-Ray Telescope, the X-ray instrument aboard Swift.
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