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Imaging calibration of AstroSat Cadmium Zinc Telluride Imager (CZTI)

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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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Notes

  1. http://astrosat-ssc.iucaa.in/?q=cztiData.

  2. http://astrosat-ssc.iucaa.in/?q=cztiData.

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Acknowledgements

This publication uses data from the AstroSat mission of the Indian Space Research Organisation (ISRO), archived at the Indian Space Science Data Centre (ISSDC). The CZT Imager is built by a consortium of Institutes across India including Tata Institute of Fundamental Research, Mumbai, Vikram Sarabhai Space Centre, Thiruvananthapuram, ISRO Satellite Centre, Bengaluru, Inter University Centre for Astronomy and Astrophysics, Pune, Physical Research Laboratory, Ahmedabad, Space Application Centre, Ahmedabad: contributions from the vast technical team from all these institutes are gratefully acknowledged.

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Authors and Affiliations

  1. Savitribai Phule Pune University, Pune, 411 007, India

    Ajay Vibhute

  2. Inter-University Centre for Astronomy and Astrophysics (IUCAA), Post Bag 4, Ganeshkhind, Pune, 411 007, India

    Ajay Vibhute & Dipankar Bhattacharya

  3. Physical Research Laboratory, Ahmedabad, 380 009, India

    N. P. S. Mithun & S. V. Vadawale

  4. Indian Institute of Technology Bombay, Mumbai, 400 076, India

    V. Bhalerao

  5. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai, 400 005, India

    A. R. Rao

Authors
  1. Ajay Vibhute
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  2. Dipankar Bhattacharya
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  3. N. P. S. Mithun
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  4. V. Bhalerao
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  5. A. R. Rao
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  6. S. V. Vadawale
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Corresponding author

Correspondence to Ajay Vibhute.

Additional information

This article is part of the Special Issue on “AstroSat: Five Years in Orbit”.

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Vibhute, A., Bhattacharya, D., Mithun, N.P.S. et al. Imaging calibration of AstroSat Cadmium Zinc Telluride Imager (CZTI). J Astrophys Astron 42, 76 (2021). https://doi.org/10.1007/s12036-021-09762-y

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  • DOI: https://doi.org/10.1007/s12036-021-09762-y

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