Up to top level
AO15   AO16   AO17   AO18   AO19   Backgrounds   Calibration   Conference   Data   Docs   EPICMOS   EPICpn   Feedback   Gallery   Misc   OM   Pending   PhD_Theses   Publications   RGS   RadMonitor   SAS_Hardware   SAS_WS   SASv16.0   SASv16.0_Installation   SASv16.1   SASv16.1_Installation   SASv17.0   SASv17.0_Installation   SASv18.0   SASv18.0_Installation   SciSim   Simulators_other   Suggestions   Trash   Visibility   XMM-bouncing   XMM-news   XRPS   XSA   esas   incoming  

Logged in as guest

Viewing RGS/16166
Full headers

From: pae@astro.keele.ac.uk
Subject: Phase-resolved RGS spectra
Compose reply
Download message
Move To:
1 replies: 1
0 followups:

Private message: yes  no

Notes:

Notification:


Date: Wed, 8 Sep 2004 11:02:46 GMT
From: pae@astro.keele.ac.uk
To: xmmhelp@xmm.vilspa.esa.es
CC: pae@astro.keele.ac.uk
Subject: Phase-resolved RGS spectra
Full_Name: Phil Evans
Submission from: (NULL) (160.5.87.25)


Following up on message 9485, on phase-resolving RGS spectra: I also want to do
this, but I don't want to overwrite the phase-averaged files etc, which running
rgsproc would do. If I run phasecalc, then use rgsfilter and rgsspectrum
manually, rather than running rgsproc, will that correctly calculate exposure
times/area scales etc. or do I *have* to use rgsproc and just rename all the
original event list, src/bg spectrum files first?

Also, am I right in thinking that I need to generate a new response file for
each phase-selected spectrum?

Thanks very much

Phil


Reply 1

Resend
From: Rosario Gonzalez Riestra <xmmhelp@xmm.vilspa.esa.es>
To: pae@astro.keele.ac.uk
Subject: Re: Phase-resolved RGS spectra (PR#16166)
Date: Wed Sep  8 13:17:27 2004
Dear Dr. Evans,

The procedure you describe is correct: you can filter the event file with
different phase periods (rgsfilter) and then extract individual spectra
(rgspectrum). The spectra so derived are correct.

As for the response matrices, in principle they should be computed for each
spectrum, but (provided the extraction region is always the same) in practical
terms this is not necesssary. 

In theory, there could exist slight (negligible?) changes in the effective area
due to the appearance of flickering columns/pixels during some period of the
exposure, but it is very unlikely that this makes a significative difference in
the response matrix.


I hope this answers your questions.

Regards,

                     Rosario Gonzalez-Riestra
                     XMM-SOC User Support Group

Up to top level
AO15   AO16   AO17   AO18   AO19   Backgrounds   Calibration   Conference   Data   Docs   EPICMOS   EPICpn   Feedback   Gallery   Misc   OM   Pending   PhD_Theses   Publications   RGS   RadMonitor   SAS_Hardware   SAS_WS   SASv16.0   SASv16.0_Installation   SASv16.1   SASv16.1_Installation   SASv17.0   SASv17.0_Installation   SASv18.0   SASv18.0_Installation   SciSim   Simulators_other   Suggestions   Trash   Visibility   XMM-bouncing   XMM-news   XRPS   XSA   esas   incoming  

Logged in as guest


Please make your (short) question the subject of your request!


Web interface using JitterBug ... back to the XMM home page