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EPIC Calibration & Operations Meeting

EPIC Calibration & Operations Meeting. Palermo, Italy, 2007 April 11 - 13. Calibration Activities – the pn perspective. Part I: from raw data to the calibrated event file. Goals: correct for spatial energy variations correct for temporal energy variations

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EPIC Calibration & Operations Meeting

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  1. EPIC Calibration & Operations Meeting Palermo, Italy, 2007 April 11 - 13

  2. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS

  3. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS

  4. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS gain corrections for individual columns  CTI corrections for individual columns, as a function of energy, taking trap saturation due to precursors into account  correction of offset shifts in specific pixels  trap saturation due to optical / infrared light  update of noisy pixel list 

  5. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS quadrant box temperature  long-term development

  6. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS pattern recognition and recombination  check for pattern pile-up  ‘vertical doubles’ 

  7. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS reject reemission events  reject invalid frames  reject MIPs  suppress detector noise 

  8. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS CTI evolution as expected  gain changes mainly related to quadrant box temperature  energy resolution fairly constant  indications for long-term changes in energy scale, spatially dependent 

  9. Calibration Activities – the pn perspective epframes  epevents  epreject  epatplot  Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS • new CCFs for  • long-term changes in energy scale • change CCF for long-term CTI to contain entries for each CCD • quadrant box temperature • replace old (never used) CCF for temperature correction by a new CCF containing 12 gain vs. temperature slopes each for FF, eFF, LW, and 1 for SW • offset corrections: provide master offset maps for all imaging modes • 3 * 12 + 1 = 37 additional extensions (64 x 200 pixel maps)

  10. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file gain corrections for individual columns Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS CTI corrections for individual columns, as a function of energy, taking trap saturation due to precursors into account trap saturation due to optical / infrared light update of noisy pixel list correction of offset shifts in specific pixels • new CCFs for • offset corrections: provide master offset maps for all imaging modes • 3 * 12 + 1 = 37 additional extensions (64 x 200 pixel maps)

  11. offset correction: before rev 546 rev 553

  12. offset correction: after rev 546 rev 553

  13. EPIC-pn detector noise (LW) residual offset map rev 546

  14. EPIC-pn detector noise (LW) residual offset map rev 553

  15. EPIC-pn detector noise (LW) residual offset map rev 730

  16. EPIC-pn detector noise (LW) residual offset map rev 790

  17. EPIC-pn detector noise (LW) residual offset map rev 974

  18. residual offset maps rev 546 rev 790

  19. cleaned residual offset maps rev 546 rev 790

  20. 20 adu image, rev 546 no brightening here

  21. rev 546 cleaned residual offset map residual offset map brightening not visible in 20 adu image

  22. XMM-CCF-REL-190: test (closed, rev 974, LW) 20-22 adu rawevents without master offset map

  23. XMM-CCF-REL-190: test (closed, rev 974, LW) 20-22 adu rawevents with master offset map

  24. XMM-CCF-REL-190: test (closed, rev 974, LW, rawevents, 20-22 adu) without master offset map with master offset map

  25. Median filtered stacked offset maps FF

  26. Median filtered stacked offset maps eFF

  27. Median filtered stacked offset maps LW

  28. Median filtered stacked offset maps SW

  29. Median filtered stacked offset maps FF LW eFF SW

  30. Calibration Activities – the pn perspective Part I: from raw data to the calibrated event file Goals: correct for spatial energy variations correct for temporal energy variations handle charges split over several pixels discriminate between signal and noise monitor temporal and spatial properties of CTI, gain, energy scale and energy resolution provide CCFs and algorithms for direct implementation into SAS long-term development quadrant box temperature • new CCFs for • quadrant box temperature • replace old (never used) CCF for temperature correction by a new CCF containing 12 gain vs. temperature slopes each for FF, eFF, LW, and 1 for SW

  31. with 1 adu / 2000 d drop

  32. corrected Mn-Kα position [adu] (in quadrant 0, after 1 adu / 2000 d drop) slope: +0.43 adu / C Mean quadrant box temperature [C] (F1576..F1876)

  33. Multiply all energies with a factor F: F = ( 1 - A(t) - B(Tq) ) C A = 4.24 *10-7 (t-t0)/[d] B = 3.65 * 10-4 Tq/[oC] C = 1.0057 t0 : 2000-Jan-01 Tq: mean of T(F1576)..T(F1876)

  34. standard correction

  35. after temperature.. correction

  36. standard correction

  37. after temperature.. correction

  38. +2.0 ± 0.3 adu/C

  39. 1E 0102.2-7219, FF rev 065 – 900 12 observations 5 – 31 ks total exposure: 229 ks 3 free energies 922.1 eV 0.43 adu / C @ Mn-K 574.0 eV 665.7 eV 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K

  40. 1E 0102.2-7219, FF rev 065 – 900 12 observations 5 – 31 ks total exposure: 229 ks 2 free energies 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K

  41. 1E 0102.2-7219, LW rev 447 – 981 7 observations 10 – 35 ks total exposure: 141 ks 3 free energies 922.1 eV 0.43 adu / C @ Mn-K 574.0 eV 665.7 eV 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K

  42. 1E 0102.2-7219, LW rev 447 – 981 7 observations 10 – 35 ks total exposure: 141 ks 2 free energies 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K

  43. 1E 0102.2-7219, SW rev 375 – 1165 7 observations 10 – 32 ks total exposure: 192 ks 3 free energies 922.1 eV 0.43 adu / C @ Mn-K 574.0 eV 665.7 eV 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K

  44. 1E 0102.2-7219, SW rev 375 – 1165 7 observations 10 – 32 ks total exposure: 192 ks 2 free energies 0.43 adu / C @ Mn-K 0.43 adu / C @ Mn-K

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