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MOS gain monitoring MOS CTI Column Correction

MOS gain monitoring MOS CTI Column Correction. MOS gain monitoring. All our monitoring plots can be seen at: http://www.src.le.ac.uk/projects/xmm/monitoring/. MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl

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MOS gain monitoring MOS CTI Column Correction

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  1. MOS gain monitoring MOS CTI Column Correction MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  2. MOS gain monitoring MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  3. All our monitoring plots can be seen at: http://www.src.le.ac.uk/projects/xmm/monitoring/ MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  4. MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/ 5 MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  5. Column Offsets Observed spectra are offset in different columns Each column (or part of) has a different offset… …which changes over time MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  6. ODF CTI correction Gain correction (adu>eV) Calibrated Event list Column offset correction MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  7. The offsets are measured from stacking all the CalClosed’s in the following revolution periods: 0-109 109-248 248-359 359-533 533-717 717-936 936-1072 1072-…. Rule: sum inter-flare periods until > 100 orbits worth MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  8. 1/3rd of photons, so 1/3rd of length, so 40 pixels long 80 pixels long How the offsets are calculated • Study the Al calibration line in given period & fifth of a column • Find the spectral peak, and model as a gaussian • The value of the offset may change at some point down a column! So search for (and model) other significant/believable peaks (maximum of 2 gaussians per fifth of a column/120 pixels) • Using relative height of gaussians, assume a relative length • Main assumption: there is no temporal change within a period MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  9. The size of the corrections… Period 0 (rev 0-109) Period 3 (rev 359-533) p0:c287 p0:c360 p3:c208 Number of Column Segments c534 c391 c32 Offset (ADU) MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  10. Note: Double gaussian is now single gaussian MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  11. Applying the corrections to real science columns MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  12. Applying the corrections to real science columns MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  13. Applying the corrections to real science columns MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  14. Global improvement MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  15. Global improvement MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  16. Global improvement MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  17. Global improvement From fitting O VIII, Ne IX, Mg XI in 1E0102 and O VIII, Ne IX in N132D Improvement in line width (%) Revolution MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

  18. Column Offsets • These will be implemented soon…! • Final CCF will include: • Column number • Offset value • Ystart • Ylength MPE EPIC Cal Meeting – May 2006 Darren Baskill: http://www.star.le.ac.uk/~dbl XMM project: http://www.src.le.ac.uk/projects/xmm/

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