Here is a list of the threads that have been added to or updated on the CIAO
Threads page, located at http://cxc.harvard.edu/ciao/documents_threads.html.
Please send questions and comments on the threads to the CXC HELPDESK
(http://cxc.harvard.edu/helpdesk/). At the end of last week, the CXC updated
the site-wide header and footer; at that time, the link to the Helpdesk was
moved from the footer to the header. Look to the top of the page when you
need to contact us!
~Liz Galle, for the CIAO Docs Team
--Summary of Changes--
One new thread has been added:
Title: Remove the ACIS Readout Streak
Date: 7 Jun 2002
URL: http://cxc.harvard.edu/ciao/threads/acisreadcorr/
History: original version, new to CIAO 2.2
While ACIS reads out, it is still taking data. Photons detected during the
readout are clocked out in the wrong row and so have incorrect CHIPY
values. For a bright source, you get a streak all along the column (on both
sides of the source, since some events are from the previous exposure).
We want to both remove the streak from the image (for cosmetic reasons and so
that it doesn't affect source detection) and to retain the streak
photons (which have more accurate timing information and are not affected by
pileup). This is done with the tool acisreadcorr.
*******************************************************
One thread has been updated:
Title: Create a Phase-binned Spectrum
Date: 7 Jun 2002
URL: http://cxc.harvard.edu/ciao/threads/phase_bin/
History: many changes-- use more precise frequency value; barycenter correct
times; define a source region
This archive was generated by hypermail 2b29 : Tue Feb 12 2013 - 01:00:11 EST