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Major Events and Anomalies in SPI Operations:
  • (18Jan2013) detector annealing #20 successfully completed
  • (22Jun2012) detector annealing #19 successfully completed
  • (09Dec2011) detector annealing #18 successfully completed
  • (12May2011) detector annealing #17 successfully completed
  • (20Jan2011) ISDC SPI data provided in Rev-3 format only (revolution 1010+)
  • (27Oct2010) detector annealing #16 successfully completed
  • (27May2010) detector no.1 fails, a terminal rate burst indicating HV sparking as cause. 16 of 19 dets remaining. HV's of all det's now being reduced slightly (4000V now)
  • (15Apr2010) detector annealing #15 successfully completed
  • (05Nov2009) detector annealing #14 successfully completed; HV now reduced (1.5kV) during perigee passages
  • (19Jul2009) loss of telemetry 01-03Jul, and parts of 16-19Jul
  • (09May2009) detector annealing #13 successfully completed
  • (19Feb2009) detector no.5 fails (i.e. 16 of 19 now operating)
  • 03Dec2008) telemetry loss 27Nov-03Dec (rev748/749)
  • (21Oct2008) telemetry lost (rev734)
  • (04Sep2008) detector annealing #12 successfully completed
  • (25Aug2008) telemetry lost (rev 715)
  • (21Jul2008) telemetry lost (rev 704)
  • (06Mar2008) now transmission and ground-processing (ISDC) of single events in compressed format, hence multiple-event suppression not necessary any more
  • (30Jan2008) detector annealing #11 successfully completed; Update of onboard software (4.3.4.) in place, including event compression
  • (17Oct2007) telemetry lost (rev 610-611)
  • (15Jun2007) detector annealing #10 successfully completed
  • (23Feb2007) Update of Onboard Software (4.3.3)
  • (21Dec2006) detector annealing #9 successfully completed (Dec 4-21); detector no. 12 still/again slightly degraded resolution
  • (29Oct2006) ACS frontend electronics unit #81 of 91 shows spurous triggers; turned off on 9 Nov)
  • (17Jul2006) telemetry lost (rev 458, 455)
  • (24Jun2006) detector annealing 8 successfully completed (08-24 Jun); detector no. 12 slightly degraded resolution
  • (09May2006) tests of tlm gain by reconfiguration through onboard selections (reduce ME transmission bandwidth) (6-9 May)
  • (17Feb2006) telemetry lost (rev 407)
  • (09Feb2006) reduce HV for Det#15 (4kV->3kV)
  • (09Frb2006) INTEGRAL Earth observation mode (27Jan-09Feb)
  • (23Jan2006) detector annealing 7 successfully completed (09-23 Jan)
  • (28Nov2005) telemetry lost (partial revs 379-381)
  • (15Jun2005) detector annealing 6 successfully completed (14-27 Jun)
  • (21Jan2005) detector annealing 5 successfully completed (20 Jan-03 Feb)
  • (10Dec2004) Update of Onboard Software (4.3.1)
  • (17Jul2004) detector no. 17 fails
  • (30Jun2004) detector annealing 4 successfully completed
  • (11Mar2004) telemetry lost (rev 170-171)
  • (06Dec2003) detector no. 2 fails
  • (11Nov2003) detector annealing 3 successfully completed
  • (21Aug2003) ACS frontend electronics unit #57 of 91 fails
  • (28Jul2003) Ops mode now photon mode plus onboard spectra (as planned) (up to here: various mode switchings to cope with telemetry issues; at times, onboard spectra only, without or with restricted single-photon-event telemetry)(revs 21-96)
  • (18Jul2003) detector annealing 2 successful
  • (06Feb2003) detector annealing 1 successfully completed

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