Imaging calibration of AstroSat Cadmium Zinc Telluride Imager (CZTI)
Ajay Vibhute, Dipankar Bhattacharya, N. P. S. Mithun, V. Bhalerao, A., R. Rao, S. V. Vadawale
TL;DR
This paper discusses the calibration and image reconstruction algorithms for AstroSat's CZTI instrument, highlighting its imaging capabilities through on-ground and in-orbit calibration results.
Contribution
It introduces specific image reconstruction algorithms and provides calibration results for CZTI, enhancing its imaging performance understanding.
Findings
Successful on-ground calibration of CZTI
Effective in-orbit imaging calibration demonstrated
Improved image reconstruction accuracy
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.
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