Mos1 ccd1 hot column
This presentation is the property of its rightful owner.
Sponsored Links
1 / 5

MOS1 CCD1 Hot Column PowerPoint PPT Presentation


  • 99 Views
  • Uploaded on
  • Presentation posted in: General

MOS1 CCD1 Hot Column. Tony Abbey – University of Leicester. XMM was launched on 10 December 1999 into a highly elliptical orbit and each revolution takes 2 days.

Download Presentation

MOS1 CCD1 Hot Column

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Mos1 ccd1 hot column

MOS1 CCD1 Hot Column

Tony Abbey – University of Leicester


Xmm impacts history

XMM was launched on 10 December 1999 into a highly elliptical orbit and each revolution takes 2 days.

Rev 107 – 17 July 2000 – MOS2 – patch of hot pixels on 3 CCDs - questionable whether was due to large proton flare prior to Filter Wheel closing

Rev 156 – 15 Oct 2000– PN – several hot pixels suddenly appear

Rev 325 – 17 Sept 2001 – MOS1 – bright flash seen, many new hot pixels

Rev 961 – 9 March 2005 – MOS1 – bright flash seen, bright column developed on central CCD, total loss of CCD6

XMM impacts history


Impact rev 961 hot column on ccd1

Impact rev 961– hot column on CCD1

The new hot column (X=324) unfortunately passes very near to the centre of CCD1. Over a period of a few weeks it appeared to be fading to below threshold, but the next slide shows it is quite variable but with perhaps a slow decline.


Impact rev 961 hot column on ccd11

Impact rev 961– hot column on CCD1


Impact rev 961 hot column on ccd12

Impact rev 961– hot column on CCD1

Conclusions

No real need to set column 324 as bad because an offset table change can suppress it

Set offset for column 324 as appropriate – 123 ADU ?

This was done on rev 1044 ?

Review level of column 324 at 3 month intervals and adjust as necessary


  • Login