Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/201003/calderon_Status-Oper-2010.pdf Äàòà èçìåíåíèÿ: Tue May 13 17:41:57 2014 Äàòà èíäåêñèðîâàíèÿ: Wed Apr 13 13:43:56 2016 Êîäèðîâêà: Ïîèñêîâûå ñëîâà: virgo cluster

Status of EPIC operations

Pedro CalderÑn Riaßo, ESAC Madrid 23 March 2010


Overview

Routine operations New DB items Special operations Not nominal events AOB's

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 2


Routine Operations
Nominal observations · See the Quarterly Status report at http://xmm.esac.esa.int/external/xmm_news/mission_status/index.php · No time lost due to the instruments ! Eclipse season fully nominal. · 19 earth eclipses, any lunar eclipse. · On each the instruments are switched OFF and ON RBI clock resynchronization every ~194 days · One on July 14
th

2009

· Other on January 24th 2010.

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 3


Routine Operations

MOS1 CCD6 periodic check: no changes · CCD still full of AFFA
(hex)

First Mosaic observations performed

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 4


New ODBs from 6.5 to 6.8

No significant changes for EPICs Includes : · Automated MOS SW & LW Diagnostics (see later) · First items for automate the Eclipse time tagged commands preparation · Some preparation for use the redundant instruments if needed (imminent ecl case) · Correction of 1 bug · Simplification of spacon work ...

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 5


MOS SW & LW diagnostics
Routine calibration, one per year A lot of manual work · Configure for Diagnostic · Configure for Small Window · 10 Diag exp in CCD 1 · A Diag exp per peripheral CCD (FF) · Configure for Large Window · 5 Diag exp in CCD 1 · A Diag exp per peripheral CCD (FF) · Restore nominal configuration Automatised as an Activity

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 6


Special operations
NRCO#81: CTI calibration using internal CAL source and SNR. · Purpose: assess whether an extended SNR can be used together with the internal calibration source for CTI evaluation · Executed in the period from 24th to 26th October 2009 (rev 1809). NRCO#82: Monitoring of MOS1 CCD1 column offset induced by meteorite. · Executed in rev 1802 (11th October). OCR#2000: Test of noise reduction technique, requested by Instrument team. · Consisted in repetitive start and stop of MOS 1&2 exposure every 10 minutes. · Executed manually in Rev 1732, on 25th May 2009 EPIC-MOS slew exposures: every four revolutions all slews are executed with FW in Closed position as opposed to Close_cal (no changes for PN). · This implied a duplication of RCF's; swap between the two RCF's still to be automated · In place since 29/05/09, first rev 1750

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 7


Incidents

MOS 1 current limiter alarm in not used circuit => SEU · The instrument was switched OFF as per procedure · Later was switched on without any anomaly · 11 Feb 2010, NCR#133, no science time lost. MOS 2 science telemetry stop being generated => sequencers hung up · Solved by procedure via exposure stop and restart · 4 Dec 2009, lost about 5½ hours of science time. PN to Safe Standby due to safety time tagged command not deleted on time. · 14 Oct 2009, no science time lost.

Any of this have further consequences.
Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 8


MOS 2 voltages change

All EMAE and EMCR voltages go up 1 Less Significative Bit (LSB), i.e. the minimum that is possible measure in the telemetry.
­ K1076 C EMAE -6V LINE ­ K1079 C EMAE +14V LINE ­ K1082 C SIGNAL GROUND ­ K1086 C EMCR +5V LINE ­ K1089 C EMCR +13V LINE...

No change in EMDH values Values still far away from the limits.

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 9


MOS 2 voltages change

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 10


MOS 2 voltages change

Not so bad as appear Scale Up +0.04V Down -0.02V Span: all the mission (10 years) caution, show statistical effects

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 11


MOS 2 voltages change

Only 1 revolution (48 hours)

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 12


Other cases from the pass

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 13


Conclusion

Still alive and doing well And that after 10 years of almost continuous work!

Status of EPIC operations | Pedro CalderÑn Riaßo | Madrid | Status_Oper_2010.ppt | XMM-Newton | Pag. 14