PACS SOVT-2 and CAPs development MPIA PACS ICC Meeting #31 12 th – 13 th January 2009, Vienna (A) Markus Nielbock (MPIA)

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs Initial Remarks ICC#31, 13 th Jan 2009 worked on SOVT-2 data from OD 63 late arrival due to database problems at HSC and propagation to MPE tried working on ESAC/MPE data pool products and TM files (thx to EW) first useful data available on Friday, more on Sunday used dp-pacs on pacs-ds2 (MPE) remotely – plotting a nightmare my first experience with SPG product analysis (tutorials needed)

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS Chopper Angular Calibration (CAPs) ICC#31, 13 th Jan 2009 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 / CAPs PACS Chopper Characterisation (CAPs) ICC#31, 13 th Jan 2009

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS Chopper Characterisation (CAPs) ICC#31, 13 th Jan 2009

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS Chopper automatic PID characterisation ICC#31, 13 th Jan 2009 iteration on small modifications around five PID parameters BBIDs “abused” for parameter set indexing originally designed for Commissioning Phase  15 following observations lost (SPEC) – “NACK” in event log detected  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  chopper was switched off during SOVT-2 at end of measurement

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS Chopper automatic PID characterisation ICC#31, 13 th Jan 2009

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS PHOT Linearity in Flux ICC#31, 13 th Jan 2009 standard PHOT dithered point source photometry AOT used during PV phase: sequence of objects covering large flux range (low + high gain) 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)  pointing offset due to missing FPG

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS PHOT Linearity in Flux ICC#31, 13 th Jan 2009 footprint of blue PHOT array pointing information available detector PA corresponds to roll angle relative positions correct? cal sources blue PHOT array

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS PHOT Linearity in Flux ICC#31, 13 th Jan 2009 footprint of blue PHOT array pixels

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS PHOT Linearity ICC#31, 13 th Jan 2009 offset due to missing SIAM and source coordinates (earth vs. L2) PA corresponds to roll angle

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs PACS PHOT Linearity ICC#31, 13 th Jan 2009 consistency check (aligned to coordinate mean values) relative propagation of coordinates in time (RA and Dec separately) added pointing of individual raw frames Ceres raw frames final frames trend of telescope tracking seems correct

Markus Nielbock – PACS SOVT-2 Wash Up / CAPs Conclusions ICC#31, 13 th Jan 2009 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 strong plead for tutorials on data product handling (How to …), help function no help exercise useful for data handling practice