The in-flight spectroscopic performance of the Swift XRT CCD camera
Astrophysics
2010-03-19 v1
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.
Cite
@article{arxiv.astro-ph/0510489,
title = {The in-flight spectroscopic performance of the Swift XRT CCD camera},
author = {J. P. Osborne and A. P. Beardmore and O. Godet and A. F. Abbey and M. R. Goad and K. L. Page and A. A. Wells and L Angelini and D. N. Burrows and S. Campana and G. Chincarini and O. Citterio and G. Cusumano and P. Giommi and J. E. Hill and J. Kennea and V. La Parola and V. Mangano and T. Mineo and A. Moretti and J. A. Nousek and C. Pagani and M. Perri and P. Romano and G. Tagliaferri and F. Tamburelli},
journal= {arXiv preprint arXiv:astro-ph/0510489},
year = {2010}
}
Comments
8 pages, including 7 figures. Submitted to proceedings of SPIE 5898, UV, X-Ray and Gamma-Ray Space Instrumentation for Astronomy XIV