Presentation is loading. Please wait.

Presentation is loading. Please wait.

XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 BGWG blank sky updates Jenny Carter, University of Leicester.

Similar presentations


Presentation on theme: "XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 BGWG blank sky updates Jenny Carter, University of Leicester."— Presentation transcript:

1 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 BGWG blank sky updates Jenny Carter, University of Leicester Andy Read, University of Leicester

2 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Current status, April 2008 Completed Action Item: BG_WG_04_05: Selection tool, web based. Sketched out html/CGI script tool. Currently on hold, suggest disregard (depending on current use). Now called BGSelector Other plans: Datasets still to be added to increase file size Will require new delivery system of files, user tailored files, web based

3 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Query resolved Michael Bauer/Miranda Skycast and blank sky files. If use attcalc more than once then on using task backscale, the backscale keyword is 0. Due to ‘backscale/arfgen’ using det. coordinates. Looks for RA_PNT, DEC_PNT, PA_PNT, REFX(Y)CRVL keywords – these are all set to zero. - not able to resolve in blank sky files. Advise users to create spectra of required size using their file and backscale, write this backscale to the spectra created from the blank sky file. Or set REFXCRVL and REFYCRVL to user’s spectrum with FITS editor fv, or work in DETX, Y coordinates - OUTSTANDING: Add this advice to website

4 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Blank sky web page Updates marked as before

5 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 New processing of Blank Sky files New archive at Leicester Recreating the individual blank sky event and associated files (component files) With new philosophy of allowing a user to request a file before it is created, can create bigger and more tailored files selecting from the old+new component observations

6 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Web based request form

7 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Creation of the larger blank sky files – at Leicester We select the relevant files for merge from the new database (epic1)

8 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Newly processed files so far, numbers Up to revn. 1100, not necessarily clean/source free, but these max. numbers to choose from so far (m1/m2/pn) ThinMediumThick Full-frame 764 / 797 / 691 (111 / 109 / 41) 1019 / 1199 / 715 (60 / 62 / 32) 151 / 146 / 105 (11 / 12 / 9) Ext. full-frame 250 (62)207 (27)18 (3) Large Window 87 / 83 / / 90 / / 35 / 34 Small Window? 71 / / / 54 Timing?

9 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Other things to consider To add: scaling of exposure maps to webpage To add: work around for skycast issue with reference keywords reset so backscale works correctly

10 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08

11 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Extra slides and some files from last meeting…

12 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Other comments from UG How often are these files going to be updated. previous work up to revn Inclusion of other modes, e.g. timing look up to revn (XMM-Newton at revn. ~1450) Refilled files – that have gone through ghosting procedure, issue with flagging of events

13 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Updates and rare modes – up to revn. 1207, all obs ModeTotal Obs. EPNEMOS1EMOS2 Full-frame Ext. full-frame730 N/A Large window Large window – free running11N/A56 Small window Small window – free running22N/A11 Timing199 N/A Fast Compressed7N/A52 Fast Uncompressed798N/A Burst34 N/A Full-frame two modes10N/A55 Refresh frame store31N/A1615

14 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Effects of ghosting/refilled files Query from UG – how to filter out good events that are now, for example in the wrong position spatially in the event file, or how to consider ‘bad’ events that have been ghosted into a ‘good’ area. How many extra bad-flagged events are seen in refilled event files Unfilled NAXIS2 Refilled NAXIS2 NAXIS2 % diff Unfilled next to win/border Refilled next to win/border Unfilled next to bad pixel Refilled next to bad pixel % diff. next to win % diff. next to bad M1 K FF M1 M FF M1 T FF M2 K FF M2 M FF M2 T FF PN K EF PN M EF PN T EF PN K FF PN M FF A PN M FF C PN T FF A PN T FF C

15 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Event selection MOS: #XMMEA 1 close to CCD border #XMMEA 5, 6, 8, 9, 10 close to onboard bad pixel, close to bright pixel, close to dead pixel, close to bad col, close to bad row PN: #XMMEA_2 close to CCD window #XMMEA 5, 6, 8 close to onboard bad pixel, close to bright pixel, close to dead pixel

16 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Images of files, events flag #XMMEA_1 – refilled files MOS M1 T FFM1 M FFM1 K FF M2 T FFM2 M FFM2 K FF

17 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Images of files, events flag #XMMEA_5, 6, 8, 9, 10 – refilled files MOS M1 T FFM1 M FFM1 K FF M2 T FFM2 M FFM2 K FF

18 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Images of files, events flag #XMMEA_2 – refilled files PN PN T EFPN M EFPN K EF PN T FF - APN M FF - A PN K FF PN T FF - CPN M FF - C

19 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Images of files, events flag #XMMEA_5, 6, 8 – refilled files PN PN T EFPN M EFPN K EFPN K FF PN T FF - APN M FF - APN T FF - CPN M FF - C

20 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Possible solutions to ghosting problem Masking chip gaps more stringently (good events in bad areas) – already the refilled files are conservatively cleaned Difficult to get bad events out of good areas Ideas? / a limitation to the refilled files and advise on the web page? New ghosting flag?

21 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 BGSelector To replace SelectRADec tool, which selected events within a given search area, on Blank Sky page Currently found at: Can now select on: coordinates, equatorial or galactic, within a search radius revolution numbers within a range exposure times within a range time within a range nH values within a range

22 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08

23 XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 Individual queries outstanding Jean Ballet 1.Offset between count maps and exposure maps, MOS. Michael Bauer Skycast and blank sky files. If use attcalc more than once then on using task backscale, the backscale keyword is 0.


Download ppt "XMM EPIC MOS Jenny Carter 7 th EPIC BG WG Meeting Mallorca, April 08 BGWG blank sky updates Jenny Carter, University of Leicester."

Similar presentations


Ads by Google