Title:	Calibration of the Large area x-ray proportional counter (LAXPC) instrument on board AstroSat.
Authors:	Antia, H M Paul, Biswajit +22 Co-authors
Keywords:	instrumentatin detectors space vehicles instruments
Issue Date:	Jul-2017
Publisher:	Institute of Physics for American Astronomical Society
Citation:	Astrophysical Journal Supplement Series, 2017, Vol.231, p10
Abstract:	We present the calibration and background model for the Large Area X-ray Proportional Counter (LAXPC) detectors on board AstroSat. The LAXPC instrument has three nominally identical detectors to achieve a large collecting area. These detectors are independent of each other, and in the event analysis mode they record the arrival time and energy of each photon that is detected. The detectors have a time resolution of 10 μs and a dead-time of about 42 μs. This makes LAXPC ideal for timing studies. The energy resolution and peak channel-to-energy mapping were obtained from calibration on the ground using radioactive sources coupled with GEANT4 simulations of the detectors. The response matrix was further refined from observations of the Crab after launch. At around 20 keV the energy resolution of the detectors is 10%–15%, while the combined effective area of the three detectors is about 6000 cm2.
Description:	Open Access
URI:	http://hdl.handle.net/2289/6778
ISSN:	0067-0049 1538-4365(Online)
Alternative Location:	http://adsabs.harvard.edu/abs/2017ApJS..231...10A http://arxiv.org/abs/1702.08624 http://dx.doi.org/10.3847/1538-4365/aa7a0e
Copyright:	2017 American Astronomical Society. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Astronomical Society.
Appears in Collections:	Research Papers (A&A)

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