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s#c#g#p#e#_#v0_6.rmf &
s#c#g#p#e#_#v0_6#.rsp
caldb/data/asca/sis/cpf/94jun20
Unknown
A total of 104 files containing various redistribution & response
matrices for the SIS. The SIS, CCD chip, and data-selection etc
for which each matrix is valid is encoded within the filename (as well as
by internal keywords) as follows:
s
c
g
p
e
_
v0_6.rmf &
s
c
g
p
e
_
v0_6
.rsp
- is the SIS sensor ( =
0
or 1
)
- is the CCD chip ( =
0
,1
,2
or 3
)
- is the grade(s) which have been combined ( =
0
, 02
or 0234
)
- is the split threshold in use ( =
20
or 40
)
- is a flag indicating whether the echo effect has
( =
0
) or has not
( = 1
) been corrected
- is the number of channels ( =
512
or 1024
).
The files ending in .rmf
are detector redistribution matrices only;
the files ending in .rsp
are detector redistribution matrices which
have been multiplied by an ARF (ie include the XRT effective area
etc). In the latter case, the location for which the ARF was constructed
is encoded using 2 characters, , where:
- The first character denotes the nominal SIS pointing position, with
1
indicating that used whilst operating in 1-CCD mode,
2
that used during 2-CCD mode, and
4
that used during 4-CCD mode.
- The second character denotes the phase of the mission, with
p
indicating the PV phase, and a
the AO phase.
Ron Zellar (GSFC) 1994 June 20 using sisrmg
version 0.6.
OGIP format RMFVERSN = 1992a
(see
CAL/GEN/92-002).
- All the above matrices were generated using
sisrmg
version 0.6
- These matrices supersede the previous set (93dec20). Although
there is not a one-to-one correspondence between the 93dec20 matrices
and these, the 93dec20 matrices should not necessarily be used.
- These matrices properly include incomplete charge collection.
Unless compensated
for, this effect leads to a slight excess of counts at energies below
about 5 keV. However, the effect is small and depends on source
spectrum. For example, if a 20,000-count spectrum from a "typical" soft-
excess AGN is analyzed, all the error bars derived by fitting with the
new matrices overlap with those derived with the old matrices. However,
despite the overlapping error bars, the flux of the best-fitting soft
excess is 45 per cent higher with the new matrices.
- As before, the RSP files correspond to the "standard" extraction radius
of 4 arcmin (38 pixels with the default, factor-of-four rebinning) and
to the standard pointing positions.
- Weird spike near 11keV has been removed
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Mike Corcoran
2001-08-30