pn Filter Wheel Closed Data

Full Frame (FF) mode


This page provides links to several events files: On the one hand, a link to the merged events file containing the sum of all the EPIC-pn Filter Wheel Closed observations available in the XMM-Newton archive up to a given date; on the other, links to the individual events files that make up the merged events file. A given user may want to use only a specific selection of events to produce tailor made Filter Wheel Closed data. This can be done in either of two ways: by filtering the merged events file and, by combining individual events files.

How to Filter the Merged Event List

Any column in the merged events list can be used for filtering. Columns containing the revolution number (Rev), the observation id (Obsid) and the exposure id (Expid) corresponding to each event have been added to the merged events list. This makes filtering the merged events list for given periods of time easier. For example, if only a particular subset of revolutions of the merged filter wheel closed events list is wanted, the SAS task evselect can be used in the following way: In each case, the file filtered.fits will contain only those events that fulfill the expression.
Information on how to write or combine filter expressions can be found in the documentation of selectlib.

Warning: Filtering the merged events list requires a large amount of memory usage. Users experiencing OutOfMemory problems may want to choose the low-memory-model within SAS (set the SAS environment variable SAS_MEMORY_MODEL to low; see the SAS documentation for more details).

How to Merge Individual Events List

Several individual Filter Wheel Closed events lists can be merged using the SAS task merge. For example, to merge data corresponding to two given revolutions, the merge command would look like this:

  merge set1=file_1 set2=file_2 outset=merged_1.fits mergedifferentobs="yes"

The file merged_1.fits will contain the merge events lists corresponding to the two revolutions. More revolutions can be added simply be merging the corresponding revolution file and the file merged_1.fits. For instance:

  merge set1=file_3 set2=merged_1.fits outset=merged_2.fits mergedifferentobs="yes"

The file merged_2.fits will contain events corresponding to file_1, file_2 and file_3.
Information on additional functionality when merging events files can be found in the documentation of the SAS task merge.



Merged Events List File Size Total Time Image Light Curve Spectra Radiation Monitor
(Rev.266 - Rev.3832) [Mb] [ks] [DETX/DETY] [cts/sec] [Norm. cts] [cts/sec]
Merged Events File 858 715.1
(ps file)

(ps file) (ps file)

(ps file)

(ps file)
Merged OoT Events File 882 715.1

Merged Event List: Merged Filter Wheel Closed events lists. The individual events files have been filtered for periods of background flaring. Columns containing the revolution number (Rev), the observation id (Obsid) and the exposure id (Expid) corresponding to each event have been added to the merged events list. A column Weight has been added to the events lists that contains, for each event, the inverse effective area over one exposure. The SAS task evigweight has been used to compute these weights. The individual events lists that make up the merged file are listed below. The Merged OoT (Out-of-Time) Events File has been produced with the same characteristics as the Merged Events File but contains instead OoT events simulated based on the original event list. See the SAS Manual for a description of the OoT effect and its correction. No individual OoT events files are provided, but they can be extracted if needed following the filtering procedures given above.
File Size[Mb]: Size of the Merged Filter Wheel Closed events list in units of megabyte.
Total Time[ks]: Duration of the merged Filter Wheel Closed exposures in units of kilosecond.
Image: Combined Filter Wheel Closed filtered image in (DETX, DETY). The filter expression used to create these images is (FLAG==0 && PATTERN <= 4). Four images are shown corresponding to different energy ranges: Top Left, energy range 1-2 keV; Top Right, energy range 7.8-8.2 keV; Bottom Left, energy range 7.3-7.6 keV; Bottom Right, false color image (0.3-10. keV). These energy ranges have been chosen to highlight known instrumental spectral features (see the EPIC background section of the XMM-Newton User Handbook for more details).
Light Curve: Combined Filter Wheel Closed filtered 100 seconds bin light curves (green tones). The filter expression used to create these light curves is (FLAG==0 && PATTERN <= 4). The right figure shows the same but includes the light curves corresponding to the high and low energy Radiation Monitor (red).
Spectra: The figure shows the individual spectrum (green) and the mean and RMS spectra (pink) of all filter wheel exposures. The spectra are plotted in 100 eV bins and normalized to the total number of counts in the range 0.3-10 keV. The filter expression used to create these spectra is (FLAG==0 && PATTERN <= 4).
Radiation Monitor: Radiation Monitor 100 seconds bin light curves for high (red) and low (green) energy over the corresponding revolution. Overimposed is the light curve of the corresponding Filter Wheel Closed observation (black). Radiation Monitor data is available here.


Individual Events List Time Observation Start Image Light Curve Radiation Monitor
[ks] [UTC Date] [DETX/DETY] [cts/sec] [cts/sec]
0266_0136750301_EPN_U002 28.1 2001-05-22T06:06:51.0
0363_0112830701_EPN_S005 6.1 2001-12-01T19:37:07.0
0448_0153750701_EPN_S008 30.5 2002-05-20T19:59:40.0
0462_0134521601_EPN_S005 23.2 2002-06-18T09:53:21.0
0532_0136540501_EPN_S008 21.0 2002-11-04T15:21:19.0
0732_0160362801_EPN_S005 38.6 2003-12-08T02:07:14.0
0780_0164160201_EPN_S003 8.0 2004-03-13T05:13:35.0
0822_0165160401_EPN_S003 11.0 2004-06-05T20:37:26.0
0875_0203850201_EPN_S011 11.2 2004-09-18T02:21:50.0
0895_0201901001_EPN_S010 13.8 2004-10-29T10:01:21.0
0959_0212282501_EPN_S014 14.2 2005-03-06T01:23:15.0
0970_0212282601_EPN_S003 34.4 2005-03-27T16:42:56.0
1150_0134722001_EPN_S025 16.0 2006-03-21T10:24:10.0
1355_0413580201_EPN_S008 12.0 2007-05-04T21:07:29.0
1393_0412580201_EPN_S003 55.1 2007-07-19T04:00:32.0
1430_0511010401_EPN_S003 11.1 2007-09-30T10:49:40.0
1449_0502041701_EPN_S003 10.1 2007-11-07T08:09:56.0
1468_0504102401_EPN_S004 10.1 2007-12-15T22:00:38.0
1500_0511011001_EPN_S003 12.1 2008-02-17T05:28:14.0
1569_0553912001_EPN_S003 10.0 2008-07-03T15:42:18.0
1587_0556214601_EPN_S003 10.0 2008-08-08T21:40:38.0
1844_0604890201_EPN_S003 10.0 2010-01-03T17:59:25.0
1935_0653870701_EPN_S003 11.0 2010-07-03T09:02:52.0
2027_0412580701_EPN_S018 10.0 2011-01-03T05:38:14.0
2130_0677182401_EPN_S003 11.0 2011-07-28T00:37:24.0
2209_0412580801_EPN_S016 10.1 2012-01-01T05:37:22.0
2308_0414191001_EPN_S022 10.0 2012-07-16T19:53:04.0
2380_0412981701_EPN_S022 10.0 2012-12-07T08:36:53.0
2430_0727360101_EPN_U002 9.2 2013-03-17T19:31:39.0
2467_0720880201_EPN_S003 10.0 2013-05-29T21:10:00.0
2597_0723130501_EPN_S003 10.0 2014-02-12T21:27:19.0
2674_0744450401_EPN_S011 10.0 2014-07-16T17:36:57.0
2782_0761921301_EPN_S001 10.3 2015-02-16T22:44:57.0
2874_0764060301_EPN_S003 7.0 2015-08-19T12:47:08.0
2969_0611183001_EPN_S011 10.0 2016-02-24T23:31:42.0
3058_0727571801_EPN_S003 12.0 2016-08-20T18:37:30.0
3082_0791980101_EPN_S002 19.4 2016-10-07T05:15:04.0
3243_0801010601_EPN_S003 10.0 2017-08-24T00:43:44.0
3267_0791980401_EPN_S002 20.0 2017-10-11T07:23:55.0
3335_0811012401_EPN_S016 10.0 2018-02-23T20:30:27.0
3401_0414191401_EPN_S027 10.0 2018-07-05T12:37:28.0
3446_0810850101_EPN_S002 21.0 2018-10-02T12:36:12.0
3543_0810870101_EPN_S012 10.0 2019-04-14T14:31:45.0
3628_0810850501_EPN_S002 24.5 2019-10-01T02:30:29.0
3645_0810880501_EPN_S012 10.0 2019-11-04T00:44:00.0
3739_0861450201_EPN_S010 10.0 2020-05-09T15:42:06.0
3811_0810850601_EPN_S002 22.6 2020-09-29T18:29:07.0
3832_0865450901_EPN_S006 9.8 2020-11-11T07:48:37.0


Individual Events List: Filter Wheel Closed events list ([rev]_[obsid]_[instr]_[expid]). The individual events files have been filtered for periods of background flaring. Columns containing the revolution number (Rev), the observation id (Obsid) and the exposure id (Expid) corresponding to each event have been added to the merged events list. A column Weight has been added to the events lists that contains, for each event, the inverse effective area over one exposure. The SAS task evigweight has been used to compute these weights.
Time[ks]: Duration of the Filter Wheel Closed exposure in units of kilosecond.
Observation Start: UTC date and time corresponding to the begining of the observation.
Image: Filter Wheel Closed filtered image in detector coordinates (DETX, DETY). The filter expression used to create these images is (FLAG==0 && PATTERN <= 4). Within each figure, four images are shown corresponding to different energy ranges: Top Left, energy range 1-2 keV; Top Right, energy range 7.8-8.2 keV; Bottom Left, energy range 7.3-7.6 keV; Bottom Right, false color image (0.3-10. keV). These energy ranges have been chosen to highlight known instrumental spectral features (see the EPIC Background section of the XMM-Newton User Handbook for more details).
Note: This set of images is meant to show any spacial structure that could be present, so for displaying purposes, each image has been optimized based on its average number of counts. Hence, images corresponding to different energy ranges or different events files are not to scale.
Light Curve: Filter Wheel Closed filtered 100 seconds bin light curves (green tones). The filter expression used to create these light curves is (FLAG==0 && PATTERN <= 4). The figure includes as well the light curves corresponding to the high and low energy Radiation Monitor (red).
Radiation Monitor: Radiation Monitor 100 seconds bin light curves for high (red) and low (green) energy over the corresponding revolution. Overimposed is the light curve of the corresponding Filter Wheel Closed observation (black). Radiation Monitor data is available here.


General Notes

For the mode-specific spectral and pattern distributions the interested reader is referred to the corresponding calibration report (Sect.4). The set-up change influences the interpretation of the discarded line counter, see Fig.10 of the abovementioned report and the appendix of the early report.

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