Imaging calibration of AstroSat Cadmium Zinc Telluride Imager (CZTI)
Abstract
AstroSat is India's first space-based astronomical observatory, launched on September 28, 2015. One of the payloads aboard AstroSat is the Cadmium Zinc Telluride Imager (CZTI), operating at hard X-rays. CZTI employs a two-dimensional coded aperture mask for the purpose of imaging. In this paper, we discuss various image reconstruction algorithms adopted for the test and calibration of the imaging capability of CZTI and present results from CZTI on-ground as well as in-orbit image calibration.
- Publication:
-
Journal of Astrophysics and Astronomy
- Pub Date:
- October 2021
- DOI:
- 10.1007/s12036-021-09762-y
- arXiv:
- arXiv:2108.06746
- Bibcode:
- 2021JApA...42...76V
- Keywords:
-
- Coded mask imaging;
- X-ray;
- AstroSat;
- CZT imager;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- 16 pages, 21 images, Payload Calibration, Accepted in JAA on AstroSat 5 years special issue