| Issue |
A&A
Volume 411, Number 1, November III 2003
Special letters issue on: first science with integral
|
|
|---|---|---|
| Page(s) | L203 - L207 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20031460 | |
| Published online | 17 November 2003 | |
Letter to the Editor
The in-flight background of IBIS/PICsIT *
1
Istituto di Astrofisica Spaziale e Fisica Cosmica Sezione di Bologna, Area di Ricerca di Bologna, via P. Gobetti 101, Bologna, Italy
2
Istituto di Astrofisica Spaziale e Fisica Cosmica Area di Ricerca di Roma 2/Tor Vergata, via del Fosso del Cavaliere, 100, Roma, Italy
Corresponding author: J. B. Stephen, stephen@bo.iasf.cnr.it
Received:
15
July
2003
Accepted:
18
September
2003
The PICsIT instrument is the high-energy imaging detector of IBIS on board INTEGRAL and comprises 4096 individual scintillator elements each working in the energy range from about 175 keV to 10 MeV. Images of the sky are created using the coded aperture technique wherein each point in the detection plane contributes to the final image. For this reason the sensitivity at any point in the image is highly dependent on both the total background and its spatial and temporal uniformity. Herein we describe the PICsIT in-flight background, for the principal modes of operation, from the point of view of total count rate and spectrum, and discuss both the spatial and temporal stability.
Key words: instrumentation: detectors; telescopes / methods: data analysis
© ESO, 2003
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