MOS2 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 MOS2 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 event files.

How to Filter the Merged Events List

Any column in the merged events list can be used for filtering. Columns (Rev) containing the revolution number, the observation id and the exposure id 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:

If only data from a given revolution range wants to be used:

evselect table=mos2_closed_FF_2022_v2.fits expression="(Rev>=780 && Rev<=970)" withfilteredset=yes filteredset=filtered.fits

If a given revolution wants to be excluded:

evselect table=mos2_closed_FF_2022_v2.fits expression="(Rev!=780)" withfilteredset=yes filteredset=filtered.fits

Nevertheless, if filtering based on TIME is required, the following expression will select only a given time period:

evselect table=mos2_closed_FF_2022_v2.fits expression="TIME>=2.1803e+08 && TIME<=2.4070e+08" withfilteredset=yes filteredset=filtered.fits

TIME

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.230 - Rev.4027)	[Mb]	[ks]	[DETX/DETY]	[cts/sec]	Spectra	[cts/sec]
Merged Events File	206.	1980.	(ps file)	(ps file) (ps file)	(ps file)	(ps file)

Merged Events List: Merged Filter Wheel Closed events list. 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. A column CCDNoise has been added to the events lists indicating if the events are contained in noisy CCDs. The nomenclature followed is: 0: chip is good/not anomalous; 1: chip is not good but not clearly anomalous; 2: chip is clearly anomalous; 3: the chip is off. Note: chip 1 is always good by default. The individual events lists that make up the merged file are listed below.
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 detector coordinates (DETX, DETY). The filter expression used to create these images is (FLAG==0 && PATTERN <= 12). Four images are shown corresponding to different energy ranges: Top Left, energy range 0.3-1.0 keV; Top Right, energy range 1.0-2.0 keV; Bottom Left, energy range 2.0-10.0 keV; Bottom Right, false color image (0.3-10.0 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 <= 12). No energy cut has been applied. 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 50 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 <= 12).
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]
0230_0086360901_EMOS2_S006	10.0	2001-03-11T09:40:57.0
0246_0094170301_EMOS2_S002	7.7	2001-04-12T08:28:45.0
0281_0094800301_EMOS2_S002	9.9	2001-06-21T03:55:18.0
0320_0109490701_EMOS2_S004	6.9	2001-09-07T00:08:58.0
0339_0108860601_EMOS2_S004	9.1	2001-10-14T21:33:22.0
0351_0111180601_EMOS2_S004	9.4	2001-11-07T20:12:57.0
0363_0112830701_EMOS2_S004	8.7	2001-12-01T18:57:54.0
0376_0071340601_EMOS2_S004	3.6	2001-12-27T17:21:02.0
0404_0112430301_EMOS2_S004	1.6	2002-02-21T14:36:56.0
0433_0044350401_EMOS2_S004	12.6	2002-04-20T11:24:52.0
0454_0111971501_EMOS2_S004	7.5	2002-06-01T08:50:55.0
0462_0125910201_EMOS2_S008	12.8	2002-06-17T07:40:54.0
0462_0134521601_EMOS2_S004	24.4	2002-06-18T09:31:12.0
0532_0136540501_EMOS2_S006	22.7	2002-11-04T14:59:12.0
0553_0125320901_EMOS2_S016	10.1	2002-12-17T08:06:05.0
0594_0140350101_EMOS2_S002	10.4	2003-03-07T15:04:57.0
0607_0137150101_EMOS2_S002	15.7	2003-04-02T13:26:24.0
0609_0150390101_EMOS2_S002	107.6	2003-04-06T22:16:14.0
0610_0150390301_EMOS2_S002	91.7	2003-04-08T22:08:24.0
0623_0150610101_EMOS2_S003	10.4	2003-05-04T11:12:48.0
0663_0156560101_EMOS2_S016	5.6	2003-07-23T05:54:55.0
0690_0112490101_EMOS2_S003	3.0	2003-09-15T02:23:29.0
0730_0154150601_EMOS2_S013	13.7	2003-12-05T05:13:05.0
0732_0125321101_EMOS2_U002	14.0	2003-12-07T20:40:34.0
0748_0204790301_EMOS2_S008	9.4	2004-01-09T10:56:25.0
0790_0134721001_EMOS2_S004	34.4	2004-04-02T03:49:46.0
0790_0164360101_EMOS2_S002	10.7	2004-04-02T14:47:24.0
0812_0165160101_EMOS2_S002	10.7	2004-05-15T12:26:26.0
0817_0165160201_EMOS2_S002	10.7	2004-05-26T21:21:40.0
0822_0165160401_EMOS2_S002	12.7	2004-06-05T20:15:13.0
0827_0165160501_EMOS2_S002	12.7	2004-06-15T19:25:10.0
0854_0134562701_EMOS2_S005	45.3	2004-08-08T06:34:29.0
0875_0203850201_EMOS2_S010	13.5	2004-09-18T01:59:29.0
0895_0201901001_EMOS2_S009	16.1	2004-10-29T09:27:43.0
0910_0160362901_EMOS2_S004	56.2	2004-11-27T20:14:55.0
0914_0203240201_EMOS2_S018	18.9	2004-12-04T20:52:00.0
1005_0125321401_EMOS2_S016	14.0	2005-06-04T09:35:41.0
1138_0312790101_EMOS2_U002	10.0	2006-02-24T17:07:47.0
1319_0134722101_EMOS2_S019	29.5	2007-02-21T02:36:53.0
1355_0413580201_EMOS2_S010	13.6	2007-05-04T20:45:12.0
1413_0510780101_EMOS2_S005	62.4	2007-08-27T23:25:17.0
1430_0511010401_EMOS2_S002	12.6	2007-09-30T10:27:45.0
1449_0502041701_EMOS2_S002	11.6	2007-11-07T07:47:59.0
1455_0411082001_EMOS2_S002	9.3	2007-11-19T19:03:16.0
1455_0411082101_EMOS2_S002	11.5	2007-11-19T22:20:30.0
1455_0411082201_EMOS2_S002	8.6	2007-11-20T02:15:29.0
1455_0411082301_EMOS2_S002	11.3	2007-11-20T05:22:10.0
1456_0411082401_EMOS2_S002	8.6	2007-11-21T16:50:22.0
1456_0411082501_EMOS2_S002	8.6	2007-11-21T19:57:02.0
1468_0504102401_EMOS2_S003	11.7	2007-12-15T21:38:42.0
1500_0511011001_EMOS2_S002	13.6	2008-02-17T05:06:16.0
1512_0505480701_EMOS2_U002	13.2	2008-03-11T19:19:49.0
1548_0556200201_EMOS2_S002	19.6	2008-05-23T02:18:15.0
1549_0556200401_EMOS2_S002	29.6	2008-05-24T10:16:59.0
1569_0553912001_EMOS2_S002	11.6	2008-07-03T15:19:57.0
1587_0556214601_EMOS2_S002	11.6	2008-08-08T21:18:17.0
1607_0510780201_EMOS2_S006	29.5	2008-09-17T20:12:13.0
1796_0510780401_EMOS2_S006	28.7	2009-09-29T13:34:47.0
1844_0604890201_EMOS2_S002	11.6	2010-01-03T17:37:03.0
1935_0653870701_EMOS2_S002	12.6	2010-07-03T08:40:31.0
1961_0510780501_EMOS2_S006	30.8	2010-08-24T17:26:29.0
2027_0412580701_EMOS2_S017	10.0	2011-01-03T05:42:26.0
2130_0677182401_EMOS2_S002	12.6	2011-07-28T00:15:02.0
2163_0510780601_EMOS2_S661	53.7	2011-10-01T17:23:10.0
2209_0412580801_EMOS2_S015	12.4	2012-01-01T05:03:44.0
2308_0414191001_EMOS2_S021	10.0	2012-07-16T19:57:20.0
2340_0510781101_EMOS2_S006	45.5	2012-09-18T21:47:09.0
2430_0727360101_EMOS2_S002	12.6	2013-03-17T18:38:46.0
2467_0720880201_EMOS2_S002	11.6	2013-05-29T20:47:45.0
2514_0510781201_EMOS2_S006	56.9	2013-08-31T19:09:29.0
2597_0723130501_EMOS2_S002	11.6	2014-02-12T21:05:08.0
2674_0744450401_EMOS2_S013	12.2	2014-07-16T17:03:45.0
2696_0510781301_EMOS2_S006	49.4	2014-08-29T20:42:52.0
2782_0761921301_EMOS2_S003	11.9	2015-02-16T22:22:43.0
2874_0764060301_EMOS2_S002	8.6	2015-08-19T12:24:54.0
2877_0510781401_EMOS2_S006	30.2	2015-08-26T01:26:18.0
2969_0611183001_EMOS2_S010	10.0	2016-02-24T23:35:55.0
3015_0658802801_EMOS2_S002	8.6	2016-05-25T22:42:49.0
3015_0658802901_EMOS2_S002	8.6	2016-05-26T01:49:31.0
3058_0727571801_EMOS2_S002	13.6	2016-08-20T18:15:15.0
3082_0791980101_EMOS2_S010	46.3	2016-10-07T15:49:32.0
3154_0793980101_EMOS2_S008	12.4	2017-02-27T19:32:50.0
3243_0801010601_EMOS2_S002	11.6	2017-08-24T00:21:28.0
3267_0791980401_EMOS2_S010	48.3	2017-10-11T06:18:31.0
3335_0811012401_EMOS2_S018	10.0	2018-02-23T20:34:38.0
3369_0791781101_EMOS2_S003	18.1	2018-05-01T22:26:24.0
3369_0791781201_EMOS2_S003	7.6	2018-05-02T04:11:25.0
3401_0414191401_EMOS2_S026	10.0	2018-07-05T12:42:54.0
3446_0810850101_EMOS2_S010	46.7	2018-10-02T23:09:28.0
3543_0810870101_EMOS2_S014	10.0	2019-04-14T14:06:24.0
3628_0810850501_EMOS2_S010	45.7	2019-10-01T13:31:12.0
3645_0810880501_EMOS2_S014	10.0	2019-11-04T00:18:40.0
3739_0861450201_EMOS2_S012	10.0	2020-05-09T15:47:30.0
3741_0810861101_EMOS2_S003	10.1	2020-05-12T20:21:40.0
3741_0810861201_EMOS2_S003	7.7	2020-05-12T23:53:21.0
3764_0861600201_EMOS2_S003	2.8	2020-06-27T17:19:06.0
3781_0864380101_EMOS2_S006	31.3	2020-08-01T18:41:21.0
3799_0863160201_EMOS2_S002	6.9	2020-09-05T12:35:51.0
3811_0810850601_EMOS2_S010	49.3	2020-09-29T21:56:33.0
3821_0870820201_EMOS2_S002	6.5	2020-10-19T09:37:52.0
3824_0870870601_EMOS2_S002	4.5	2020-10-25T09:14:05.0
3832_0865450901_EMOS2_S005	11.6	2020-11-11T07:23:17.0
4026_0884970401_EMOS2_S002	11.6	2021-12-03T01:41:37.0
4027_0810850701_EMOS2_S010	45.0	2021-12-05T07:24:01.0

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. The SAS task emtaglenoise has been run to identify noisy CCDs. The information is written in the header of the individual events file and is lost in the merge events file. A column CCDNoise has been added to the events lists indicating if the events are contained in noisy CCDs. The nomenclature followed is: 0: chip is good/not anomalous; 1: chip is not good but not clearly anomalous; 2: chip is clearly anomalous; 3: the chip is off. Note: chip 1 is always good by default.
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 <= 12). Within each figure, four images are shown corresponding to different energy ranges: Top Left, energy range 0.3-1.0 keV; Top Right, energy range 1.0-2.0 keV; Bottom Left, energy range 2.0-10.0 keV; Bottom Right, false color image (0.3-10.0 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 <= 12). No energy cut has been applied. 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.

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