1. Markus Nielbock (MPIA Heidelberg)
PACS ICC Photometer Workshop
15th - 17th September 2010
PACS Photometer Responsivity Drift Analysis
Markus Nielbock (MPIA Heidelberg)
Markus Nielbock (MPIA) – PACS Photometer Responsivity

2. Correlation with evaporator temperature
Markus Nielbock (MPIA) – PACS Photometer Responsivity

3. Correlation with M1 temperature - initial findings
Markus Nielbock (MPIA) – PACS Photometer Responsivity

4. Correlation with M1 temperature
Markus Nielbock (MPIA) – PACS Photometer Responsivity
responsivity drift seems to be partly correlated with M1 temperature
further influence suggested
some of it due to bolometer evaporator temperature drift

5. Individual chop-nod positions
Markus Nielbock (MPIA) – PACS Photometer Responsivity

6. Individual chop-nod positions
Markus Nielbock (MPIA) – PACS Photometer Responsivity

7. Results clear responsivity variations in time (blue filter)
more severe for chop-nod than for scan map
possible anti-correlation with M1 temperature
strong discrepancy between chop-nod positions
one of four positions shows similar shift like scan map
(after update of bad pixel list)
Markus Nielbock (MPIA) – PACS Photometer Responsivity

8. Flux gradient in FOV after photAvgDith() after photDiffNod()
Markus Nielbock (MPIA) – PACS Photometer Responsivity
after photCombineNod()

9. Bad pixels at source locations
Markus Nielbock (MPIA) – PACS Photometer Responsivity

11. Comparison: Mad Map vs. Scanamorphos
Markus Nielbock (MPIA) – Mad Map vs. Scanamorphos
Mad Map
Scanamorphos
Scanamorphos – Mad Map