PACS SOVT-2 and CAPs development

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MPIA. PACS SOVT-2 and CAPs development. PACS ICC Meeting #31 12 th – 13 th January 2009, Vienna (A). Markus Nielbock (MPIA). Initial Remarks. worked on SOVT-2 data from OD 63. late arrival due to database problems at HSC and propagation to MPE.
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MPIAPACS SOVT-2andCAPs developmentPACS ICC Meeting #3112th – 13th January 2009, Vienna (A)Markus Nielbock (MPIA)Initial Remarks
  • worked on SOVT-2 data from OD 63
  • late arrival due to database problems at HSC and propagation to MPE
  • first useful data available on Friday, more on Sunday
  • tried working on ESAC/MPE data pool products and TM files (thx to EW)
  • used dp-pacs on pacs-ds2 (MPE) remotely – plotting a nightmare
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPs
  • my first experience with SPG product analysis (tutorials needed)
  • ICC#31, 13th Jan 2009PACS Chopper Angular Calibration (CAPs)
  • ground calibration needs to be redone in orbit (zero gravity)
  • measure mechanical zero point offset
  • open-loop measurement (SFT) used for static/dynamical properties
  • new CAPs available, based on previous versions (JIDE & IDL)
  • had to be split into two CAPs (Jython error: too many code lines)
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPsICC#31, 13th Jan 2009PACS Chopper Characterisation (CAPs)Markus Nielbock – PACS SOVT-2 Wash Up / CAPsICC#31, 13th Jan 2009PACS Chopper Characterisation (CAPs)Markus Nielbock – PACS SOVT-2 Wash Up / CAPsICC#31, 13th Jan 2009PACS Chopper automatic PID characterisation
  • iteration on small modifications around fivePID parameters
  • BBIDs “abused” for parameter set indexing
  • originally designed for Commissioning Phase
  • chopper was switched off during SOVT-2 at end of measurement
  • 15 following observations lost (SPEC) – “NACK” in event log detected
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPs
  • PV phase clone will be changed accordingly
  • SOVT-2 data did not contain diagnostic HK (necessary for performance analysis)
  • neither in pool products nor in TM file
  • no telecommand history available
  • SPEC HK indicates observation was fully executed
  • CAPs (Jeroen Bouwman) based on manual PID tuning analysis – fully tested
  • ICC#31, 13th Jan 2009PACS Chopper automatic PID characterisationMarkus Nielbock – PACS SOVT-2 Wash Up / CAPsICC#31, 13th Jan 2009PACS PHOT Linearity in Flux
  • during PV phase: sequence of objects covering large flux range (low + high gain)
  • standard PHOT dithered point source photometry AOT used
  • during SOVT-2: one AOR – tracking on SSO Ceres
  • full analysis still pending (late delivery of SPG products – Level 0 only)
  • Level 2 processing with SPG script successful (error message: no SIAM available)
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPs
  • pointing offset due to missing FPG
  • ICC#31, 13th Jan 2009PACS PHOT Linearity in Flux
  • footprint of blue PHOT array
  • cal sources
  • pointing information available
  • detector PA corresponds to roll angle
  • relative positions correct?
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPsblue PHOT arrayICC#31, 13th Jan 2009PACS PHOT Linearity in Flux
  • footprint of blue PHOT array pixels
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPsICC#31, 13th Jan 2009PACS PHOT Linearity
  • offset due to missing SIAM
  • and source coordinates (earth vs. L2)
  • PA corresponds to roll angle
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPsICC#31, 13th Jan 2009PACS PHOT LinearityCeresraw framesfinal framesMarkus Nielbock – PACS SOVT-2 Wash Up / CAPs
  • consistency check (aligned to coordinate mean values)
  • relative propagation of coordinates in time (RA and Dec separately)
  • added pointing of individual raw frames
  • trend of telescope tracking seems correct
  • ICC#31, 13th Jan 2009Conclusions
  • OD 63 data very late for ICC meeting analysis due to database problems
  • pointing checks impossible  SIAM not applied
  • diagnostic HK data missing?
  • PHOT dithered Point Source AOT + tracking SSO executed (successful?)
  • CAPs for chopper characterisation ready and tested
  • Markus Nielbock – PACS SOVT-2 Wash Up / CAPs
  • strong plead for tutorials on data product handling (How to …), help function no help
  • exercise useful for data handling practice
  • ICC#31, 13th Jan 2009
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