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Matching CIAO and CALDB VersionsCALDB 4.1.4 should not be used unless you are running CIAO 4.1 or later versions. CIAO 3.4 requires CalDB 3.5.5, available here. Are your versions mismatched? Time to ugrade CIAO and CALDB! 17 Sep 2009 07 Jul 2009 CalDB4.1.3, a patch to all previous CalDB4 versions, has been released. It includes the acis Epoch 37 T_GAIN upgrades (Feb through Apr 09). See the CalDB 4.1.3 release notes for more information.27 Mar 2009 CALDB 4.1.2, a patch to CalDB 4.1.0 or 4.1.1, has been released. It includes the ACIS Epoch 36 T_GAIN updates for Nov 08 through Jan 09. See the CalDB 4.1.2 release notes for more information.21 Jan 2009 CalDB 4.1.1 was released. It includes upgrades to the HRMA Effective Area and the HETG 1st-order grating efficiencies. See the CalDB 4.1.1 for more information on this upgrade.15 Dec 2008 CalDB 4.1.0, a new CalDB structure for CIAO 4.1, which includes ACIS -120C EPOCH 35 (Aug - Oct 08) T_GAIN updates, was released. See the CalDB 4.0 and CalDB 4.1.0 release notes for more information on this new installation. |
Cycle 11 Grating RMFs/ARFsNOTICE TO CY11 PROPOSAL PLANNERS -- FINAL RELEASEThis is the promised final release of the CY11 Grating ARF and RMF files. The Grating ARFs and zeroth order ARFs below have been updated to include a new and better model of the HRMA axial effective area, which applies to all configurations. (We have elected NOT to upgrade the ACIS Optical Blocking Filter contamination model, which is under further investigation.) The new hrma files is named "hrmaD1996-12-20axeffaN0008.fits" and is being released with CalDB 4.1.1. An incumbent adjustment of the HETG grating efficiencies is also being released, to maintain the HEG and MEG 1st-order cross-calibration accuracy. The update to the HRMA model involves a more self-consistent application of small contamination layers on the iridium mirror surfaces, and uses a different method of weighting the HRMA pre-launch calibration data. The result of the change is an improvement in high-temperature cluster modeling with the HRMA/ACIS-S and HRMA/ACIS-I configurations, with derived plasma temperatures more consistent between these two internal configurations, and better cross-calibration with the XMM telescope as well. The GARFs and ARFs below NO LONGER include the appendage "_p.garf" or "_p.arf" because these are now the final *.garf files. Please delete the *cy11_p.garf files completely, and download the new *cy11.garf files below. We have prepared sample grating RMFs and corresponding ARFs for proposal planning purposes. As in the CY09 release, all of the GRMF files below were built with mkgrmf, using the latest LSF parameter data for the HETG/ACIS-S, LETG/ACIS-S, and LETG/HRC-S configurations. In all cases, the grating pixel randomization, RAND_TG is set to 0 pixels (turned off). The ACIS-related gARFs were built with the CIAO script fullgarf, using PHA2 files from specific archival observations and the appropriate GRMF energy grid as the seed energy grid. They therefore include dither, and do not have exactly the nominal aimpoints as their source positions. The configuration information, including SIM_Z position and ObsID numbers, are included in the GARF headers. The ACIS-S configuration effective areas (*.garf or *.arf) were derived using CIAO 4.1.1, CALDB 4.1.1, including the latest ACIS contamination model file acisD1999-08-13contamN0004.fits, with the time delay value set at 390268865.184s, corresponding to the UTC date 2010-05-15T00:00:00, or half-way through the CY11 observation period. For the HRC-S configurations, all effective areas were derived from CIAO as well, using the latest QE and QE uniformity calibrations. To download individual files, <Shift>-click on the filename. The complete set of responses is available as a gzipped tarfile from the anonymous FTP site asc.harvard.edu in the directory /pub/caldb/CY11/. Caveats and Notes
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Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA. Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved. |