Performance of the IBIS Compton mode

Date Issued
2004
Author(s)
DOI
Abstract
The IBIS instrument launched on board the ESA INTEGRAL observatory on October 2002 is a coded mask telescope composed by two position sensitive detection planes, one with 16384 Cadmium Telluride pixels (ISGRI) and the other with 4096 Caesium Iodide pixels (PICsIT). Events detected in coincidence in the two detector layers are flagged as generated by Compton scattered photons and can be then processed and filtered using the Compton kinematic equations. The analysis of these data is, however, quite complex, mainly due to the presence of a great number of fake events generated by random coincidences between uncorrelated ISGRI and PICsIT events; if this component is not subtracted with great accuracy, false source detections can be produced. In this work, we present the performance (spectral and imaging) obtainable from the IBIS Compton data, by analyzing ground calibration acquisitions. We also analyze the IBIS Compton flight data relative to the Crab observation, to determine its scientific capabilities.
Coverage
UV and Gamma-Ray Space Telescope Systems
Series
Volume
5488
Start page
738
Conferenece
UV and Gamma-Ray Space Telescope Systems
Conferenece place
Glasgow, Scotland, United Kingdom
Conferenece date
21-25 June, 2004
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2004SPIE.5488..738S
Rights
open.access
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