Inflight performance and calibration of the NuSTAR CdZnTe pixel detectors

Takao Kitaguchi; Varun Bhalerao; W. Rick Cook; Karl Forster; Brian W. Grefenstette; Fiona A. Harrison; Kristin K. Madsen; Peter H. Mao; Hiromasa Miyasaka; Vikram R. Rana

doi:10.1117/12.2057342

24 July 2014 Inflight performance and calibration of the NuSTAR CdZnTe pixel detectors

Takao Kitaguchi, Varun Bhalerao, W. Rick Cook, Karl Forster, Brian W. Grefenstette, Fiona A. Harrison, Kristin K. Madsen, Peter H. Mao, Hiromasa Miyasaka, Vikram R. Rana

Author Affiliations +

Proceedings Volume 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray; 91441R (2014) https://doi.org/10.1117/12.2057342
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The Nuclear Spectroscopic Telescope Array (NuSTAR) satellite is a NASA Small Explorer mission designed to operate the first focusing high-energy X-ray (3-79 keV) telescope in orbit. Since the launch in June 2012, all the NuSTAR components have been working normally. The focal plane module is equipped with an 155Eu radioactive source to irradiate the CdZnTe pixel detectors for independent calibration separately from optics. The inflight spectral calibration of the CdZnTe detectors is performed with the onboard 155Eu source. The derived detector performance agrees well with ground-measured data. The in-orbit detector background rate is stable and the lowest among past high-energy X-ray instruments.

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Takao Kitaguchi, Varun Bhalerao, W. Rick Cook, Karl Forster, Brian W. Grefenstette, Fiona A. Harrison, Kristin K. Madsen, Peter H. Mao, Hiromasa Miyasaka, and Vikram R. Rana "Inflight performance and calibration of the NuSTAR CdZnTe pixel detectors", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91441R (24 July 2014); https://doi.org/10.1117/12.2057342

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