Monte-Carlo Simulator and Ancillary Response Generator of Suzaku XRT/XIS System for Spatially Extended Source Analysis
Abstract
We have developed a framework for the Monte-Carlo simulation of the X-Ray Telescopes (XRT) and the X-ray Imaging Spectrometers (XIS) onboard Suzaku, mainly for the scientific analysis of spatially and spectroscopically complex celestial sources. A photon-by-photon instrumental simulator is built on the ANL platform, which has been successfully used in ASCA data analysis. The simulator has a modular structure, in which the XRT simulation is based on a ray-tracing library, while the XIS simulation utilizes a spectral "Redistribution Matrix File" (RMF), generated separately by other tools. Instrumental characteristics and calibration results, e.g., XRT geometry, reflectivity, mutual alignments, thermal shield transmission, build-up of the contamination on the XIS optical blocking filters (OBF), are incorporated as completely as possible. Most of this information is available in the form of the FITS (Flexible Image Transport System) files in the standard calibration database (CALDB). This simulator can also be utilized to generate an "Ancillary Response File" (ARF), which describes the XRT response and the amount of OBF contamination. The ARF is dependent on the spatial distribution of the celestial target and the photon accumulation region on the detector, as well as observing conditions such as the observation date and satellite attitude. We describe principles of the simulator and the ARF generator, and demonstrate their performance in comparison with in-flight data.
Keywords
Cite
@article{arxiv.astro-ph/0610118,
title = {Monte-Carlo Simulator and Ancillary Response Generator of Suzaku XRT/XIS System for Spatially Extended Source Analysis},
author = {Y. Ishisaki and Y. Maeda and R. Fujimoto and M. Ozaki and K. Ebisawa and T. Takahashi and Y. Ueda and Y. Ogasaka and A. Ptak and K. Mukai and K. Hamaguchi and M. Hirayama and T. Kotani and H. Kubo and R. Shibata and M. Ebara and A. Furuzawa and R. Iizuka and H. Inoue and H. Mori and S. Okada and Y. Yokoyama and H. Matsumoto and H. Nakajima and H. Yamaguchi and N. Anabuki and N. Tawa and M. Nagai and S. Katsuda and K. Hayashida and A. Bamba and E. D. Miller and K. Sato and N. Y. Yamasaki},
journal= {arXiv preprint arXiv:astro-ph/0610118},
year = {2015}
}
Comments
19 pages with 8 figures, accepted for publication in PASJ Vol 58, Suzaku special issue