The in-flight spectroscopic performance of the Swift XRT CCD camera

Julian P. Osborne; A. P. Beardmore; O. Godet; A. F. Abbey; M. R. Goad; K. L. Page; A. A. Wells; L. Angelini; D. N. Burrows; S. Campana; G. Chincarini; O. Citterio; G. Cusumano; P. Giommi; J. E. Hill; J. Kennea; V. LaParola; V. Mangano; T. Mineo; A. Moretti; J. A. Nousek; C. Pagani; M. Perri; P. Romano; G. Tagliaferri; F. Tamburelli

doi:10.1117/12.617149

18 August 2005 The in-flight spectroscopic performance of the Swift XRT CCD camera

Julian P. Osborne, A. P. Beardmore, O. Godet, A. F. Abbey, M. R. Goad, K. L. Page, A. A. Wells, L. Angelini, D. N. Burrows, S. Campana, G. Chincarini, O. Citterio, G. Cusumano, P. Giommi, J. E. Hill, J. Kennea, V. LaParola, V. Mangano, T. Mineo, A. Moretti, J. A. Nousek, C. Pagani, M. Perri, P. Romano, G. Tagliaferri, F. Tamburelli

Author Affiliations +

Proceedings Volume 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV; 589817 (2005) https://doi.org/10.1117/12.617149
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The Swift X-ray Telescope (XRT) focal plane camera is a front-illuminated MOS CCD, providing a spectral response kernel of 144 eV FWHM at 6.5 keV. We describe the CCD calibration program based on celestial and on-board calibration sources, relevant in-flight experiences, and developments in the CCD response model. We illustrate how the revised response model describes the calibration sources well. Loss of temperature control motivated a laboratory program to re-optimize the CCD substrate voltage, we describe the small changes in the CCD response that would result from use of a substrate voltage of 6V.

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Julian P. Osborne, A. P. Beardmore, O. Godet, A. F. Abbey, M. R. Goad, K. L. Page, A. A. Wells, L. Angelini, D. N. Burrows, S. Campana, G. Chincarini, O. Citterio, G. Cusumano, P. Giommi, J. E. Hill, J. Kennea, V. LaParola, V. Mangano, T. Mineo, A. Moretti, J. A. Nousek, C. Pagani, M. Perri, P. Romano, G. Tagliaferri, and F. Tamburelli "The in-flight spectroscopic performance of the Swift XRT CCD camera", Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 589817 (18 August 2005); https://doi.org/10.1117/12.617149

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