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

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

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5898..340o&link_type=abstract

UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV. Edited by Siegmund, Oswald H. W. Proceedings of the SPIE, Vol

Astronomy and Astrophysics

Astronomy

Scientific paper

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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