INTEGRAL Guest Observer Facility

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INTEGRAL Guest Observer Facility
Mission, Overview, Status

• Successful Launch 10/17/02, desired 3-day
  elliptical orbit achieved
• Primary instruments performing nominally
• SPI Ge detector resolution up to spec
• Problems
• JEM-X anode failures, gain voltage lowered (cut
  off at 4.5 keV)
• 1 telescope in use (50 of pre-launch
  efficiency)
• High background rates for SPI, IBIS
• some event-data modes not always available

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INTEGRAL Guest Observer Facility

Mission Status (con.)

• PV phase completed, AO-1 program started 12/27/02
• NRA grant support for US PIs/Co-Is
• 45 proposals received 1.7M total requests
• Peer reviewed last spring, 1.4M allocated
  (w/caveats)
• 1st US observation last week (4U 1630-47)
• 23 US PIs out of 105 total
• AO-2 release planned for mid-July 03
• proposals due September

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INTEGRAL Guest Observer Facility
PV Phase Cygnus Region

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INTEGRAL Guest Observer Facility
Cygnus Region


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INTEGRAL Guest Observer Facility
PV Phase Results (XSPEC-12)


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INTEGRAL Guest Observer Facility
Gamma-Ray Bursts GRB 21125 Localized
INTEGRAL is capable of localizing 10-20 GRBs per
year to 10 arc min (prompt) accuracy. In
Addition,
the SPI anti-coincidence system can
provide information to the Inter Planetary
Network for triangulation.
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INTEGRAL Guest Observer Facility

Solar Proton Flare

• 1H n-capture line clearly resolved, 16 keV _at_2216
  keV
• SPI resolution seems up to spec, R500 except for
  detector 15

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INTEGRAL Guest Observer Facility
Database Issues

• Public data archive to be mirrored at HEASARC
• large data volumes, 2.5-3 Gb/day (volume already
  exceeds CGRO!)
• PV database now installed at GSFC as test (not
  publicly available)
• Procurement initiated for physical archive
  through FY05
• Combined XMMSwiftINTEGRAL anticipated
  2.5Tb/year
• Automated data transfer under study
• data volumes pose difficulties
• PV DB 125 Gb, via network transfer (painful)
• Archive interface under development
• Some ?-ray friendly enhancements desirable

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INTEGRAL Guest Observer Facility
Software Issues

• ISDC plans first public release in March 03
• Port to linux accomplished
• GSFC is testing development site
• Successful end-to-end analyses carried out. Some
  issues
• Coded mask instrument concepts unfamiliar to many
• first time users face steep learning curve
• Analysis executables are ftool-like, but subtle
  difficulties
• Analysis scripts are preferred approach, but can
  mask underlying complexities
• Performance
• Large DB volume distribution over 100s of
  files limits performance

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INTEGRAL Guest Observer Facility
Software Issues Interoperability

• Analysis system uses object grouping
  concepts
• data distributed over numerous files
  directories, managed by FITS (observation group
  and science window group) tables
• this renders use of familiar techniques for data
  inspection, screening (e.g. FV, fselect)
  difficult
• Some ISDC standard keyword (such as extension
  names) require modifications to FTOOLs
• Extensive use of type-II PHA files
• Not supported by some FTOOLS such as grppha,
  mathpha
• Also INTEGRAL-specific rmf arf files (for SPI)