Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/200207/Ops_status.pdf Дата изменения: Wed May 14 13:28:22 2014 Дата индексирования: Wed Apr 13 13:21:23 2016 Кодировка: Поисковые слова: вечный календарь

Status of EPICs science operations

Bruno Altieri EPIC CAL/OPS meeting VilSpa, June 2-4, 2002 XMM-Newton
Bruno Altieri, ESA/RSSD 1


Review of actions
· EPIC_7/6: M.Turner to nominate one point of contact per instrument (i.e. one for MOS and one for pn) for the on-board s/w updates ­ Formal mechanism to handle s/w updates to be settled at upcoming management meeting at ESTEC (April 2002) EPIC_8/1: To propose a work around solution for the EMDH limitation of 50 flagged bad pixels per CCD. On N. La Palombara. ­ activity in progress (April 2002) EPIC_9/1: J.Munoz/B.Altieri : clarification of the prospects of ODF availability of the very early Cal/PV observations (before rev 47) ­ Due date 19/04/2002
· · all observations that could be processed are now available on XSA pre revs 47-53 obs cannot be reprocessed blindly. New HK files and attitude files have to be merged with OLD PMS FITS files for pn. Specific requests to be addressed to Munoz/Altieri.

·

·

·

EPIC_9/2: B. Altieri to provide the new CCFs reflecting the current MOS bad pixels ­ Due date : 29/04/02, OPEN ...

XMM-Newton
Bruno Altieri, ESA/RSSD 2


Status of spacecraft operations
· All subsystem in prime units · Hydrazine: consumption stable at ~0.4kg / month · Solar array / power : ok · Next eclipse season starting on August 15, 2002 · Flexible timeline now in use. · Orbit manoeuvre planned in early 2003 · Only one solar flare in spring 2002: rev 434

XMM-Newton
Bruno Altieri, ESA/RSSD 3


MOS 1 efficiency breakdown over the last 6 months (rev 351 to 440)
Revolution breakdown
rad. Belts 20.1%

scheduled science: 9545 ks performed science: 8407 ks

performed science 67.8%

science window 79.9%

performed calibration 4.3%

slews 13.0% contingencies 4.2 %
G/S in st support to S/C pb: 2.0% pb: 0.06% other S/C: 2.1% pb: 0.07%

solar flares 5.7%

Science window breakdown

instrument overhead 3.2%

idle time 0.6%

XMM-Newton
Bruno Altieri, ESA/RSSD 4


MOS 1 efficiency in the routine phase

scheduled science: 33520 ks performed science: 28375 ks

160000 CLUSTER launch ERS con tingency S ICRAL launch Arte m is LEOP CLUSTER launch ENVISAT launch 323 343

140000

120000

100000 TI ME (s)

80000

60000

40000

20000

0 103 123 143 163 183 203 223 243 263 REV # performed science solar flares G/S pb inst. pb support other S/C 283 303

XMM-Newton 363 383 403 423
Bruno Altieri, ESA/RSSD
S/C pb

5


PN efficiency breakdown over the last 6 months (rev 351 to 440)
Revolution breakdown
rad. Belts 19.2%

scheduled science: 8448 ks performed science: 7595 ks

performed science 60.6%
science window 80.8%

performed calibration 3.9%

contingencies 4.3 %
G/S inst. support to S/C pb: 2.5% pb: 0.04% other S/C: 1.7% pb: 0.07%

slew 12.9% solar flares 3.1% overhead 13.6% idle 0.5%

Science window breakdown

XMM-Newton
Bruno Altieri, ESA/RSSD 6


PN efficiency in the routine phase
160000 CLUSTER launch CLUSTER launch S ICRAL launch Arte m is LEOP ERS con tingency

scheduled science: 30294 ks performed science: 24942 ks

140000

PN anomaly

120000

100000 TIME (s)

80000

60000

40000

20000

0 103 123 143 163 183 203 223 243 263 REV # performed science solar flares G/S pb inst pb. 283 303 323

343 363 383 403 423 Bruno Altieri, ESA/RSSD S/C pb

XMM-Newton
7

support other S/C

ENVISAT launch


Data processing and distribution
· In the routine phase (as of rev 440, 24 May 2002) ­ ­ ­ ­ Number of Number of Number of Number of distributed planned observations: 1757 performed observations: 1666 ODF generated: 1623 pipeline / data products sets generated and 1518

XMM-Newton
Bruno Altieri, ESA/RSSD 8


Radiation: another bad spring season
Radiation levels from RadMon data at 500 cps
48 44 40 36 32 28 24 20 16 12 8 4 0 58 68 88 98 108 118 128 138 148 158 168 178 188 198 208 218 228 238 248 258 268 278 288 298 308 318 328 338 348 358 368 378 388 398 408 418 428 438 448 45.000 km 45.000 km

Time after perigee (in h)

2000

2001

2002

Revolution No information High radiation after perigee Low radiation High radiation before perigee

XMM-Newton
Bruno Altieri, ESA/RSSD 9

458


Radiation plots available on internal web

XMM-Newton
Bruno Altieri, ESA/RSSD 10