Calibration of the Rossi X-ray Timing Explorer Proportional Counter Array

Details Calibration of the Rossi X-ray Timing Explorer Proportional Counter Array Calibration of the Rossi X-ray Timing Explorer Proportional Counter Array

2005-11-17

arxiv.org/abs/astro-ph/0511531v2

Astrophys.J.Suppl.163:401,2006

Astronomy and Astrophysics

Astrophysics

77 pages, 34 figures. accepted by Ap J Supplement for April 2006 issue. This paper and additional calibration information are

Scientific paper

10.1086/500659

We present the calibration and background model for the Proportional Counter Array (PCA) aboard the Rossi X-ray Timing Explorer (RXTE). The energy calibration is systematics limited below 10 keV with deviations from a power-law fit to the Crab nebula plus pulsar less than 1%. Unmodelled variations in the instrument background amount to less than 2% of the observed background below 10 keV and less than 1% between 10 and 20 keV. Individual photon arrival times are accurate to 4.4 micro-seconds at all times during the mission and to 2.5 micro-seconds after 29 April 1997. The peak pointing direction of the five collimators is known to a precision of a few arc-seconds

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