gis#v4_0.rmf and gis3v4_0

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gis#v4_0.rmf and gis3v4_0_128ch.rmf

$\fbox{Location}$

caldb/data/asca/gis/cpf/95mar06

$\fbox{Status}$

CURRENT

$\fbox{Summary of Files}$

A 1024 channel detector redistribution matrix (only) gisv4_0.rmf for each GIS, ( = 2 or 3), produced by GIS Team (University of Tokyo) using gisrmf version 4.0.

In addition, the file gis3v4_0_128ch.rmf is also available, representing gis3v4_0.rmf rebinned by a factor of 8 (to 128 channels). This file is recommended for use with data acquired in PH mode between 1994 Feb 10 and 1994 Apr 06 which suffered severe problems due to an on-board software bug. Further information on both the problem and now to analysis GIS3 data taken over this period is available via the URL:
http://heasarc.gsfc.nasa.gov/docs/asca/abc_gis3_bitfix.html

$\fbox{Delivered to CALDB by:}$

gisv4_0.rmf - Ken Ebisawa (NASA/GSFC ASCA GOF) in OGIP standard format, 1995 Mar 07.

gis3v4_0_128ch.rmf - Ken Ebisawa (NASA/GSFC ASCA GOF) in OGIP standard format, 1996 Feb 13

$\fbox{File Format}$

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

$\fbox{Input Datasets, Assumptions, {\it etc}}$

No further information supplied to the CALDB.

$\fbox{Points to Note}$

These are detector redistribution matrices. The effective area of the XRT etc have NOT be included
These datasets supercede all previous versions (Sections 3.13.1, 3.13.2, 3.13.3, 3.13.4) and are recommended for use in the GO phase.
The previous version of these datasets (gisv3_1.rmf, Section 3.13.4) low energy tails of the pulse-height distribution were underestimated, and artificial 'soft-excess' had appeared for spectra with high absorption and low energy photons. In these new RMFs, the low energy response was modified taking account of ground calibration results and new theoretical calculations, and such soft-excesses disappeared..
The energy energy response (above $\sim$ 4 keV) is the same as for the previous version of these datasets (gisv3_1.rmf, Section 3.13.4). Thus the high energy response problems (systematic residual at around 6 keV and above 8 keV) remain These residuals are estimated to be at about the 5% level, and hence not significant for sources with several counts/s, dominated by statistical errors.
See the important notes on the use of gis3v4_0_128ch.rmf in the Summary above.

Next: g#v2_4_#.rsp Up: CPF: GIS Detector Redistribution Previous: gis#v3_1.rmf Contents

Mike Corcoran 2001-08-30