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.

中文翻译：

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AstroSat 镉锌碲化物成像仪 (CZTI) 的成像校准

AstroSat 是印度第一个天基天文台，于 2015 年 9 月 28 日发射。AstroSat 上的有效载荷之一是镉锌碲化物成像仪 (CZTI)，它在硬 X 射线下运行。CZTI 采用二维编码孔径掩模进行成像。在本文中，我们讨论了用于 CZTI 成像能力测试和校准的各种图像重建算法，并展示了 CZTI 地面和在轨图像校准的结果。