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

Appendix C
BAT Acronym and Terminology
Glossary
This Appendix contains a glossary of special terms and acronyms related to the BAT.
1553 Bus Communication bus connecting the BAT to the spacecraft systems.
Aperture pattern of open and blocked cells used in the BAT mask. Also, the aperture data file
records this pattern for use in image analysis.
BAT Burst Alert Telescope
Block A BAT block contains 8 DMs and 2048 detectors. There are 16 blocks in the detector array.
CALDB Calibration Database, used to store calibration and auxiliary files for science analysis.
Available from the Swift web page.
CdZnTe Cadmium Zinc Teluride, the BAT detector technology.
CZT same as CdZnTe.
Coded Aperture A type of non-imaging optics, consisting of absorbing elements arranged in a
specific pattern above a detector plane.
DAP Detector Array Plane, a term which refers to the entire detector array.
Disable/Enable Map Map produced on-board which contains the individual detectors which
were enabled or disabled. A disable/enable map is produced whenever the instrument configuration
changes on board, and should be present in each observation data set.
DM Detector Module, a component that contains two DM Sides and 256 detectors.
DM Side Detector Module Side, containing 128 detectors. Two sides are arranged into a single
Detector Module.
DPH Detector Plane Histogram, a histogram accumulated for each detector in several energy
bands.
DPI Detector Plane Image, an image (histogram) accumulated for each detector in a single energy
band.
DRM Detector Response Matrix, the response function used in spectral analysis.
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