xmm epic mos andy read ([email protected]) 4 th epic bg wg meeting mallorca, spain 25/10/06...
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Agenda: EPIC BG working group: 4th meeting 25/10/06 – Mallorca
Meeting room, Hotel Tora, Peguera, Mallorca. [Times are approximate, and items may drift forward and back]
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10:30 - 12:45
Action Items from last meeting (AMR)
Progress Reports (Including Actions):
- Update on XMM-ESAS (SS)
- Update on Blank Sky event files (JAC)
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12:45 - 14:00 : Lunch
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14:00 - 15:30
Discussion: Web Pages, BG Components Synopsis Table, FWC data, meetings, new scripts/tools, long-term BG trends etc. (AMR + all)
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15:30 - 15:45 : Coffee
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15:45 - Finish
Final session: - Summing-up
- AOB
- Plans for the next period
- Next meeting (and/or next progress [teleconf?] meeting).
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Apologies:
MJF, (MK), KK, SM, GP, WNP
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Actions from last meeting (taken from minutes) 1/3
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Actions from last meeting (taken from minutes) 2/3
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Actions from last meeting (taken from minutes) 3/3
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Meetings
- Report on BGWG and Blank Sky activities at ESAC Trainee Meeting (JAC, ESAC, July ‘06)
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Files Too Big?
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
• Only S=standard state files released for now – good.
• Why only on a per-CCD basis?
• Can we combine these into full FOV datasets? (Users have requested this)
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Fin_over_Fout
Script to perform the Fin/Fout ratio calculation of Molendi et al.
Delivered to BGWG web
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Complicated selection area used for MOS to avoid detector ‘holes’
PN uses simple circular selection area
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
In use…
Ratio < 1.15 : File is not contaminated by soft protons
1.15 < Ratio < 1.30 : File is slightly contaminated by soft protons
1.30 < Ratio < 1.50 : File is very contaminated by soft protons
Ratio > 1.50 : File is extremely contaminated by soft protons
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Flare-Free Fraction Total Observation Time (max~80 ks)
Flare-Free Fraction as a function of orbital position (using ~entire EPIC dataset)GSE-X points towards the sun. GSE-X-GSE-Y plane is the plane of the ecliptic. GSE-Z is towards the north pole. Red indicates higher values.
The best observations are made:
• When the spacecraft is as far from the earth as possible
• and at 180 degrees from the sun.
• Towards the sun seems to be better than 90 degrees from the sun.
• Given the orbit, the best observations will be done in Winter.
to Sun
K.Kuntz
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
RGS background count rate - sensitive to both soft protons (few 100s keV) plus higher energy radiation (MeVs),
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Summer (Aug 2003) Winter (Dec 2004 – Jan 2005)
‘Acceptable level’ ~ 1 ct/s @ E>10 keV
V.Fioretti & L.Foschini
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
‘Acceptable level’ ~ 1 ct/s @ E>10 keV
Summer (Aug 2003) Winter (Dec 2004 – Jan 2005)
V.Fioretti & L.Foschini
Folded on Orbit Period (48 hours)
Evidence for Seasonal Effect!
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XMMEPICMOS
Andy Read ([email protected])4th EPIC BG WG MeetingMallorca, Spain 25/10/06
Some Other Open Issues
• espfilt: Brendan tried to upload package - failed with getting a pgp access key. Should be OK now?
• f_in/f_out script: Onto BGWG page? Scripts page? … with e.g. ‘ghostholes’ + …
• FWC data: Full FOV issues. + A section for the next newsletter needs to be prepared...
• Any new tools, files?
• Vadim Burwitz (for MJF): "EPIC-pn Timing-Mode Closed Filter Background" - New files?
• Also “Simulation of particle induced EPIC-pn background with Geant4”: Chris Tenzer
• Plans for future versions of the ESAS s/w package?
• Convert ESAS into pn tool?
• Recent Nevalainen paper (astro-ph/0610461) – low energy (<0.5 keV) cal problems pn and/or MOS ?
• What to present to CAL tomorrow?