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GSFC XMM-Newton GOF Status Report #194: XMM-NEWTON NEWS #107
_/ XMM-NEWTON NEWS #107 --- 29-Apr-2010 _/
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- Version 10.0 of the Science Analysis System (SAS) released
Version 10.0 of the Science Analysis System (SAS) released
The XMM-Newton SAS team is pleased to announce the release of a new
version of the SAS: SAS 10.0.
Binaries for diverse flavours of Linux, Solaris and MacOs as well as a
virtual machine including SAS 10 for Linux, MacOs and Windows are
The main improvements in this version with respect to the former
version, SAS 9.0.0, are:
- full compliance of the SAS C++ code with gcc4, making possible the
support of newer operating system / flavours;
- full 2-D parameterisation of the EPIC PSF as function of instrument,
energy and off-axis angle, covering the whole field-of-view, is being
introduced. This is kept in this version as a non-default
alternative, since it is not fully scientifically validated, and some
areas of the parameter space have still to be explored and/or
refined. The alternative parameterisation models the PSF spokes and
the large-scale azimuthal variations, and includes an additional
gaussian core, which accounts for (at most) 2% of the enclosed energy
flux in the MOS cameras.
- new task specgroup, for defining the useful range of spectral
channels and grouping channels according to statistical criteria of
EPIC and RGS spectra;
- upgrade of the configurable SAS pipeline-like metatask psechain,
for general processing of all the XMM-Newton data corresponding to
one observation, but in particular, for the extraction of scientific
reduced data related to one or several point sources, including
signal to noise optimization;
- upgrade of the task emosaicproc included in the former SAS 9 version
for analysis of EPIC mosaic data and coherent source detection of
overlapping EPIC exposures;
- adaptation of the metatask for analysis of EPIC slew data
eslewchain, for its easy inclusion into the official XMM-Newton
Pipeline system PPS;
- RGS data analysis performed by default on a wavelength grid.
Modelling of the RGS background is now also possible (and default)
on the wavelength grid, after adaptation of the corresponding
- extension of the contamination model for RGS according to the
findings of the RGS calibration team, showing a non-linear but
asymptotic contamination evolution. It requires the use of a new
version of the corresponding calibration files
RGS1_EFFAREACORR_0006.CCF and RGS2_EFFAREACORR_0006.CCF (these files
will be publicly available at earliest a week after the SAS 10
release, and are not compatible with SAS 9.0);
- upgrade of the the RGS effective area determination to include the
possibility of a spectral correction for alignment of RGS and EPIC
effective areas, should this be necessary, which can be switched on
by the non-default parameter "withrectification". The spectral
correction factors are contained in a new extension of the
calibration files for the moment set to unity;
- new task omvariability, for OM variability statistics;
- improvement of the photometry for OM fast mode;
For further details on SAS 10.0 please visit the SAS Pages at:
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