1. Calibration of Scanning Sky Monitor (SSM) onboard AstroSat
- Author
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M. C. Ramadevi, Brajpal Singh, Blessy Elizabeth Baby, Abhilash R. Sarwade, Dipankar Bhattacharya, B. T. Ravishankar, and S. Seetha
- Subjects
Physics ,X-ray transient ,Astrophysics::High Energy Astrophysical Phenomena ,media_common.quotation_subject ,High Energy Physics::Phenomenology ,Astrophysics::Instrumentation and Methods for Astrophysics ,Proportional counter ,Astronomy and Astrophysics ,Astrophysics ,Light curve ,Cross Calibration ,Space and Planetary Science ,Sky ,Calibration ,Remote sensing ,media_common - Abstract
SSM onboard AstroSat is designed to monitor X-ray sky in the energy range 2.5–10 keV to detect and locate X-ray sources in outburst. SSM with its three almost identical 1D-proportional counters mounted on a rotating platform, scans the sky in step and stare mode of operation. It observes the X-ray sky and generates light curves for X-ray sources detected. Here, we discuss the positional calibration to carry out imaging with SSM. Onboard calibration of SSM has been carried out with Crab, the standard X-ray source. SSM observations of Crab are compared with that of MAXI on ISS for cross calibration of the instrument.
- Published
- 2021
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