mn500v1_#.fits

caldb/data/asca/gis/cpf

SUPERSEDED (see Section 3.13.3)

(Ken Ebisawa (ASCA GOF, NASA/GSFC), May 24, 1993)

Two 1024 channel response matrices of ASCA GIS created by the GIS team in the University of Tokyo. Original files are DEC binary files in the old XSPEC format, and they are transferred to NASA/GSFC by Ken Ebisawa and converted to the FITS format. The FITS files has a naming scheme mn500v1_$xxx$.fits explained below.

Following is a summary of the explanation for the response matrices orginally written by Y. Ishisaki (Univ. of Tokyo) in Japanese.

mn500v1-gis.fits:
This is a response of the GIS including the XRT thermal sheild and GIS plasma sheild transmission. XRT effective area is not included.

mn500v1-r5.fits:
Additionally, this includes the XRT effective area. For XSPEC spectral analysis, this matrix should be used. The XRT effective area is supplied by the Nagoya XRT team (version 0.0). The effective area at the center encircled within 5 mm radius is adopted.

These are preliminery matrices, so up to about 10% systematic errors may be expected. Particularly, response values under 1 keV may not be reliable. PHAs below 70ch and above 800ch should be discarded so as to eliminate effects of lower/upper discriminators.

Ken Ebisawa (NASA/GSFC ASCA GOF) in OGIP standard format

OGIP format RMFVERSN = 1992a (see CAL/GEN/92-002).

See above

To carry out spectrl fitting correctly with these matrices, the following are required for the PHA files.

• there are 1024 PHA channels.
• temperaure/position dependent gains are corrected so that 500 ch corresponds to 5.894 keV (Mn K$\alpha$). (this will be carried out with the gislin task - eventually -.)