MOS gain monitoring MOS CTI Column Correction MPE

MOS gain monitoring MPE EPIC Cal Meeting – May 2006 Darren Baskill: http: //www.

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.

Column Offsets Observed spectra are offset in different columns Each column (or part of)

ODF CTI correction Column offset correction Gain correction (adu>e. V) Calibrated Event list MPE

The offsets are measured from stacking all the Cal. Closed’s in the following revolution

How the offsets are calculated -Study the Al calibration line in given period &

The size of the corrections… Number of Column Segments Period 0 (rev 0 -109)

Note: Double gaussian is now single gaussian MPE EPIC Cal Meeting – May 2006

Applying the corrections to real science columns MPE EPIC Cal Meeting – May 2006

Global improvement MPE EPIC Cal Meeting – May 2006 Darren Baskill: http: //www. star.

Global improvement From fitting O VIII, Ne IX, Mg XI in 1 E 0102

Column Offsets These will be implemented soon…! Final CCF will include: -Column number -Offset

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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/

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/

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/

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/

ODF CTI correction Column offset correction Gain correction (adu>e. V) Calibrated Event list 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/

The offsets are measured from stacking all the Cal. Closed’s in the following revolution periods: 0 -109 109 -248 248 -359 359 -533 533 -717 717 -936 Rule: sum inter-flare periods until > 100 orbits worth 936 -1072 -…. 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/

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 1/3 rd of photons, so 1/3 rd of length, so 40 pixels long 80 pixels long 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/

The size of the corrections… Number of Column Segments Period 0 (rev 0 -109) Period 3 (rev 359 -533) p 0: c 287 p 0: c 360 p 3: c 208 c 391 c 534 c 32 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/

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/

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/

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/

Global improvement From fitting O VIII, Ne IX, Mg XI in 1 E 0102 Improvement in line width (%) and O VIII, Ne IX in N 132 D 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/

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/