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IBIS/PICsIT in-flight performances

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arxiv astro-ph/0309224 v1 pith:FMMGHQIT submitted 2003-09-08 astro-ph

IBIS/PICsIT in-flight performances

classification astro-ph
keywords picsitenergyarcminibisimagingin-flighton-boardperformances
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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PICsIT (Pixellated Imaging CaeSium Iodide Telescope) is the high energy detector of the IBIS telescope on-board the INTEGRAL satellite. PICsIT operates in the gamma-ray energy range between 175 keV and 10 MeV, with a typical energy resolution of 10% at 1 MeV, and an angular resolution of 12 arcmin within a \~100 square degree field of view, with the possibility to locate intense point sources in the MeV region at the few arcmin level. PICsIT is based upon a modular array of 4096 independent CsI(Tl) pixels, ~0.70 cm^2 in cross-section and 3 cm thick. In this work, the PICsIT on-board data handling and science operative modes are described. This work presents the in-flight performances in terms of background count spectra, sensitivity limit, and imaging capabilities.

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