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ChangeLog for emos-quantumeff |
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VERSION 1.16 - 2014-07-29 (RDS) |
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Issue 0020 and 0021 |
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Tweak of TOTAL_QE at silicon edge. It is now time-dependent |
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and hence two epoch files are needed per camera. |
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VERSION 1.15 - 2013-11-11 (RDS) |
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Issue 0019 |
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New calibration at low energies |
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VERSION 1.14 - 2009-09-01 (RDS) |
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Issue 0018 |
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New calibration around the Oxygen edge for both cameras. |
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New files are: mos1_qe_v25_ccd1.dat, mos2_qe_v25_ccd1.dat |
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VERSION 1.13 - 2007-05-31 (RDS) |
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Issue 0017 |
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New calibration based on contamination model designed to |
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reduce the discrepancy between MOS and PN at the Oxygen edge |
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VERSION 1.12 - 2004-04-20 (RDS) |
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Issue 0016 |
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Produced from a new calibration of MOS chips used on the |
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SWIFT project. The changes affect the QE_TOTAL array of |
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both cameras below 1 keV. |
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VERSION 1.11 - 2003-06-03 (RDS) |
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Issue 0015 |
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Uses realistic channel space pattern fractions for Timing |
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mode (SPR-2422) |
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Includes key-words to describe the ratio of large pattern |
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events (SPR-2421) |
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VERSION 1.10 - 2002-12-16 (RDS) |
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Issue 0014 |
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Set the pattern fractions in channel space more accurately so |
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that they can be used within epatplot |
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VERSION 1.9 - 2002-11-22 (RDS) |
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Issue 0013 |
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Add in pattern fractions for timing and burst modes |
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Add in a CHBINS_FRACTION extension |
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VERSION 1.8 - 2002-06-28 (RDS) |
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Iss 0012 |
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Return to the values in Version 1.6 which are now further |
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substantiated by work by Philippe Marty. |
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|
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VERSION 1.7 - 2002-03-27 (DHL) |
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Iss 0011 |
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Seems like that SAS v 5.3 won't go out with the required |
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vignetting |
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corrections so we need a quick fudge to get the MOS2 and MOS1 QE's |
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back into an alignment that temporarily gives reasonable results, |
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while not maintaining the old Leicester QE's with known |
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deficiencies. MOS2 only changed.. |
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|
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VERSION 1.6 - 2002-03-07 (DHL) |
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Iss 0011 |
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Made an error in adding up only patterns 0:12 into the QE_TOT |
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extensions |
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So this version should now have patterns 0:31 |
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VERSION 1.5 - 2002-03-01 (DHL) |
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Iss 0011 |
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Fixed the data for the QE, by making the high energy (>1.5keV) points |
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match a detection depth provided on a CCD-CCD case from the Orsay data |
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(see below). At lower energies I just take the existing sets from the |
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Leicester response matrices (q20 versions) and merge into the higher |
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energy data. I note that we are matching a response of 0-12 patterns |
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only, so we do not truly expect the curve to fit a simple Si depth |
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-due to effect of energy thresholds and event splitting, but the Orsay |
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data are a pretty good match. On echange i made was to get a good fit |
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just below the Si K edge & there is put in a depth of 32um for ALL |
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chips |
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|
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Values used were: MOS1, CCD 1-7 25.8,29.6,28.8,25.3,28.4,28.2,27.8 |
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MOS2, CCD 1-7 28.0,27.4,26.8,28.8,28.8,26.4,28.2 |
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Note that in MOS2 CCDS4&5 were never measured on ground so I took an |
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average value based on other CCDS from the same manufactured batch |
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|
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VERSION 1.4 - 2002-01-30 (RDS) |
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Iss 0010 |
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Add in extra units and remove quotes from region string |
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VERSION 1.3 - 2002-01-24 (RDS) |
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Iss 0010 |
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Add in extra pattern fraction tables (SCR-72) |
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VERSION 1.2 - 2002-01-08 (DL) |
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Iss 0009 |
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To fix SPR2178 I changed the region descriptor from POLYGON type to |
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BOX type. This not only clears up ambiguity on the borders of the shape |
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but probably speeds up the calculation. |
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VERSION 1.1 - 2001-09-20 (DL) |
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Iss 0008 |
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Updated for version 5.2 of SAS. We realise that there was a double |
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accounting of the pattern fractions so that at 10keV (for exampel) |
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the 50% fraction of 0-12 patterns was doubly applied. This led to |
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a gradually decreasing QE with Energy compared with the true expected |
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QE |
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VERSION 1.0 - 2001-07-19 (DL) |
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Updated for version 5.1 of SAS to make the SAS arfgen reproduce |
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consistent data with the LUX-supplied response matrices. |
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Addedd additional energy anchor points at 0eV and 30keV to aid |
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interpolation. |
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High energy points are scaled according to a silicon absorption depth |
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which was measured at Orsay - now we have a good cross-match to CCD |
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fabrication batch which allows an estimate even for thoise CCDS which |
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were never measured at Orsay. |
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VERSION 0.6 - 2000-09-6 (DL) |
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Further analysis of fligh tdata at Licester allowed better |
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reconciliation with the analytical QE models. In addition we |
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introduce far more energy data to allow for better interpolation. There |
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are still problems around the O edge and below 300eV, so we need to |
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understand modifications in RMF to make progress at this point. |
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|
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VERSION 0.5 - 2000-06-23 (DL) |
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The initial flight calibration revealed discrepancies at the O edge |
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and the lowest energy reponses. These were attributed mainly to |
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systematic errors in the monitoring process at the Orsay synchrotron. |
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New empirical fits to the data were provided by Leicester, and these |
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have been compared with new SCISIM runs, utilising the best latest |
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electrode structure used in the Leicester analystical QE model fit. A |
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combination of LUX data, and an extension BELOW the Si L edge for the |
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SCISIM data allows a hopefully better fit. In addition I have modified |
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the QE's for the outer CCDs of each camera, where there are systematic |
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differences in QE at > 5keV. These can be attributed to ddifferences |
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in silicon resistivity translating to different depletion depths. The |
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QE data for this at Orsay is equivocal, so I take average trends in |
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increased efficiency between 5 and 12keV and allocate a best estimate |
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of increased depletion depth to this, and in return modify the overall |
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QE curves as a result. I am suspicious, though that all QE's are |
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GREATER tahn the central CCD, and this may indicate a systematic bias |
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in the measurment method at Orsay. |
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The new data sets should give good results to about 10% accuracy at |
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worst case small energy scales (eg EXAFS scales at silicon edges etc.) |
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VERSION 0.4 - 2000-05-23 (DL) |
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FIxed error of missing pattern 1 data for CCD5 |
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VERSION 0.3 - 2000-02-23 (DL) |
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FIxed numerical problem in the data files (some values >>1 ) |
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Version 0.2 - 2000-02-17 (UL) |
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+ fixed minor problem with REGION expression in data files |
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Version 0.1 - 2000-02-09 (DL) |
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+ created by DL |
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