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Reducing the ATHENA WFI background with the science products module: lessons from Chandra ACIS
Author(s): Catherine E. Grant; Eric D. Miller; Marshall W. Bautz; Esra Bulbul; Ralph P. Kraft; Paul Nulsen; David N. Burrows; Steven Allen
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Paper Abstract

The Wide Field Imager (WFI) on ESA’s Athena X-ray observatory will include the Science Products Module, a secondary CPU that can perform special processing on the science data stream. Our goal is to identify on-board processing algorithms that can reduce WFI charged particle background and improve knowledge of the background to reduce systematics. Telemetry limitations require discarding most pixels on-board, keeping just candidate X-ray events, but information in the discarded data may be helpful in identifying background events masquerading as X-ray events. We present full frame data from CCDs on-board Chandra, in high-Earth orbit, and the results of our search for phenomenological correlations between particle tracks and background events that would otherwise be categorized as X-rays. In addition to possibly reducing the Athena instrumental background, these results are applicable to understanding the particle component in any X-ray Silicon-based detector in space.

Paper Details

Date Published: 6 July 2018
PDF: 9 pages
Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106994H (6 July 2018); doi: 10.1117/12.2313864
Show Author Affiliations
Catherine E. Grant, Massachusetts Institute of Technology (United States)
Eric D. Miller, Massachusetts Institute of Technology (United States)
Marshall W. Bautz, Massachusetts Institute of Technology (United States)
Esra Bulbul, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Ralph P. Kraft, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Paul Nulsen, Smithsonian Astrophysical Observatory (United States)
David N. Burrows, The Pennsylvania State Univ. (United States)
Steven Allen, Stanford Univ. (United States)


Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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