The most recent Canned
can be downloaded here (please refer to
Please carefully read the notes below before retrieving and using the files.
Canned response matrices
The PN canned response matrices
available for spectra selected from single-pixel events only, doubles
only and single+doubles combined, with event threshold 20 adu (100 eV)
for most observing modes. This allows one to make use of the additional
signal-to-noise improvement with double event patterns. However the
user should be warned to compare spectral fitting results with and
without the double events, as the effects of pile-up can make the
results a little variable.
These files have filenames of the form;
||for singles, where ver is the version number, eg; v6.9
||for doubles, where ver is the version number, eg; v6.9
||singles plus doubles, where ver is the version number, eg; v6.9
For the PN the responses are provided at intervals of CCD 20 rows, due
to changing energy resolution from charge transfer effects. That is, a
nomenclature Y0 can be used from rows 1-20, and Y9 from rows 181-200
- Y0 CCD lines 1-20 (i.e farthest from centre)
- Y1 CCD lines 21-40
- Y9 CCD lines 181-200 (i.e. nearest centre)
The PN response varies with observation mode and different ready-made matrices are available for each mode.
- ff - fullframe mode
- ef - extended full frame mode
- sw - small window mode
- lw - large window mode
- ti - timing mode
- bu - burst mode
The mode is coded into the filename such that epn_sw20_dY9.rmf is a file for small window mode.
Since SAS 6.5 the full set of ready-made MOS response files
is not provided
). However, for the purpose of the feasibility study
of XMM-Newton proposals, a limited set of MOS response files are still available.
Additionally, since SAS 13.5, two sets of files have been produced for
spectra generated at 5eV and 15eV energy resolution (see
). Each energy resolution set has been generated for:
|The new EPIC-MOS files follow the nomenclature:
||m1 for MOS-1 or m2 for MOS-2.
||e1 to e14.
||im for imaging mode or tu for timing mode.
||p0 for pattern 0 only or pall for patterns 0 - 12.
||c for centre of patch, w for wings of patch and o for off patch.
MOS response files for 5eV and 15eV can be found under different sub-directories
in the ftp repository.
MOS response files before SAS 6.5 had a different nomenclature
as the one listed above (see
MOS response files before SAS 11.0 had a different nomenclature
as the one listed above (see
Pipeline Produced Matrices
The source spectra produced by the pipeline refer to a set of canned matrices
(please refer to "Update
). These matrices are the latest available at the time of the
pipeline processing, and may be used for performing spectral analysis with the
- MOS spectra of sources which are within 1 arcminute of the
boresight of the MOS cameras (normally the target of the observation)
experience a redistribution which is highly dependent upon the exact
position of the source and the size of the extraction region. An
accurate analysis of such sources should use a redistribution matrix
produced by the task rmfgen. Using a canned matrix in this case may
introduce large errors below 1 keV
(please refer to "Update 2005-12-15").
Information on the performed updates of the EPIC canned response files is available here
How to use canned responses and/or arfgen and rmfgen
Details on how to perform a standard spectral analysis of EPIC
data is available from the
SAS User's Guide
and from the EPIC SAS Threads
. Details about the status of the EPIC Calibration can be found in the
EPIC Status of Calibration and Data Analysis Document