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PN Monitoring Mallorca, April 2008

PN Monitoring Mallorca, April 2008. Mainly Column 64 Hot Pixels. PN Hot Pixels. Modified blanking of Column 64 segments in latest BPT updates. PN Noisy Pixels (I). PN Noisy Pixels (II). Counts fraction due to noisy pixels per CCD:

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PN Monitoring Mallorca, April 2008

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  1. PN Monitoring Mallorca, April 2008 Michael Smith, ESAC

  2. Mainly Column 64 Hot Pixels PN Hot Pixels Michael Smith, ESAC

  3. Modified blanking of Column 64 segments in latest BPT updates. PN Noisy Pixels (I) Michael Smith, ESAC

  4. PN Noisy Pixels (II) Counts fraction due to noisy pixels per CCD: CCD 11 column 64 noisy pixel counts fraction reduced in the rev. 1408 BPT. Blanking of a further 8 pixels in the latest BPT (in use from rev. 1530 onwards). CCD 11 Michael Smith, ESAC

  5. Increase in offset median: 2 – 5 ADU for Q0 CCDs since ~ Rev 1408 (Perhaps other CCDs also, e.g. CCD5) Coincides with PN BPT implementation (Rev 1408); however, the PN db changes affected the CCD11 BPT only… Similar to onset of the offset median trend seen in Revs 605 – 660 PN Offset Median (I) Michael Smith, ESAC

  6. Regarding the Rev 605 – 680 offset median trend: A correlation was found with the respective Quadrant VC Currents (params F1189-92) (discussed at the Saclay 2003 Ops Meeting)… PN Offset Median (II) J. Fauste, S. Rives Michael Smith, ESAC

  7. PN Offset Median (III) F1189: Q0 VC Current …however, in the recent trend: NO correlation with VC Current found. G. Buenadicha, P. Calderon Michael Smith, ESAC

  8. PN Offset Median (IV) Perhaps a side-effect of the other database changes, e.g. RGS Single Node Readout? Several analog electronics temperatures investigated, but NO CORRELATION found with PN offset median trend. P. Calderon Michael Smith, ESAC

  9. Change in hot pixel offsets due to the rev. 1490 temperature excursion PN Offset Variance Michael Smith, ESAC

  10. PN Energy Scale (I) PN CTI and Gain corrected energies v. revolution: the current long-term CTI parameters are no longer valid; a refined long term CTI is in the process of being released in a new CCF issue. (Result of SAS 7.1 processing). Michael Smith, ESAC M. Kirsch

  11. PN Energy Scale (II) Line width trend is stable ~0.5 ADU/year increase at Mn (Result of SAS 7.1 Processing) Michael Smith, ESAC M. Kirsch

  12. - Determine line positions of first singles versus RAWY - Fit exponential function to determine column CTE PN CTI Determination (I) PN CTI determination and monitoring to be taken over from MPE to ESAC. Michael Smith, ESAC

  13. PN CTI Determination (II) Relative CTI per CCD (ObsID 0109270501) Preliminary sanity check: Comparison with Konrad Dennerl results. CTI values generally agree within errors. Still very much a work in progress... Michael Smith, ESAC

  14. MOS Monitoring Bad Pixels & Background Mallorca, April 2008 Michael Smith, ESAC

  15. MOS Noisy Bad Pixels Still fewer Noisy Pixels than before cooling. However, some are very persistent and have been included in the most recent MOS BPT (in use from rev. 1515 onwards): 5 pixels for MOS1, and 11 for MOS2. This should reduce count rates by 5 - 15% depending on the CCD. Michael Smith, ESAC

  16. Michael Smith, ESAC

  17. MOS Line Monitoring Mallorca, April 2008 Michael Smith, ESAC

  18. Michael Smith, ESAC

  19. MOS1_Al_width.ps Michael Smith, ESAC M. Stuhlinger

  20. Michael Smith, ESAC

  21. MOS Low Energy Noise Monitoring (MOS2CCD5 Effect) Michael Smith, ESAC

  22. Low Energy Noise (MOS2CCD5-Effect): MOS1 MOS2 Michael Smith, ESAC

  23. RAWY MOS2CCD5 effect - Due to Charge Injection? ~40 Michael Smith, ESAC

  24. VID=20V VID=20V VID=25V VID=25V EPIC TTD#19-4: Test with VID increased to 25 V Improvement or not? Michael Smith, ESAC

  25. VID=25V VID=20V EPIC TTD#19-4: Repeated test with VID increased to 25 V Improvement or not? Don’t know. But it does not solve the problem!! Michael Smith, ESAC

  26. EPIC Telemetry Monitoring Michael Smith, ESAC

  27. EPIC Telemetry Michael Smith, ESAC

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