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 EPICpn/35716
Full headers

From: Steve Snowden <steven.l.snowden@nasa.gov>
Subject: PN normal vs OOT processing
Compose reply
Download message
Move To:
2 replies: 1 2
2 followups: 1 2

Private message: yes  no

Notes:

Notification:


Date: Fri, 02 May 2008 12:53:29 -0400
From: Steve Snowden <steven.l.snowden@nasa.gov>
To: xmmhelp@sciops.esa.int, steve Snowden <steven.l.snowden@nasa.gov>
Subject: PN normal vs OOT processing
Hi Guys,
     I've run into a problem that I haven't seen before, mostly
because I haven't done the comparison.  I've processed a pn
observation both normally and using the OOT parameter in epchain.
I had thought that the spectra were supposed to be the same and
just the positions of the events were affected.  However, as you
can see in the attached plot they look very different.  The
fluorescent lines in the OOT spectrum are all much broader than
the instrumental response.  Are the positions of the above-
threshold pixels randomized before they are combined into
PATTERN > 0 events?  Is that what it is supposed to do?  This
will make it very difficult to subtract the OOT events as a
background spectrum.
     In the plot black indicates the original spectrum while
red shows the OOT spectrum.

Cheers,
     Steve

*******************************************************************
Dr. Steve Snowden
XMM-Newton Guest Observer Facility
NASA/GSFC, Code 662
Greenbelt, MD  20771
Phone: 301-286-8100
Fax:   301-286-1684
E-mail: steven.l.snowden@nasa.gov


Reply 1

Resend
From: Rosario Gonzalez Riestra <xmmhelp@sciops.esa.int>
To: steven.l.snowden@nasa.gov
Subject: Re: PN normal vs OOT processing (PR#35716)
Date: Mon May  5 09:45:01 2008
Dear Steve,

I am afraid that we have not received the attachments to your message.

Would you mind sending them again?

Thanks and sorry for the inconveniences

Charo

-------------------------------
Rosario Gonzalez-Riestra
XMM Science Operations Centre
ESAC
Madrid (Spain)


Followup 1

Compose reply
Download message
Date: Mon, 05 May 2008 06:29:34 -0400
From: Steve Snowden <steven.l.snowden@nasa.gov>
To: Rosario Gonzalez Riestra <xmmhelp@sciops.esa.int>
Cc: Steve Snowden <steven.l.snowden@nasa.gov>
Subject: Re: PN normal vs OOT processing (PR#35716)
This is a multi-part message in MIME format.
--------------090607030802000506020409
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Hello Charo,
     Sorry about that.  I've attached the file now.
     I was thinking about the spectrum over the weekend
and suspect that I know the answer.  Is the additional
width of the energy response due to the CTI correction?
If the events are thought to come from an incorrect
pixel along the read-out column then the applied CTI
correction will be incorrect.  The effect should go
both positive and negative. The data that I am looking
at are from a long exposure at what is effectively a
blank-sky field.  The data are from the entire detector.

Cheers,
     Steve

Rosario Gonzalez Riestra wrote:
> Dear Steve,
> 
> I am afraid that we have not received the attachments to your message.
> 
> Would you mind sending them again?
> 
> Thanks and sorry for the inconveniences
> 
> Charo
> 
> -------------------------------
> Rosario Gonzalez-Riestra
> XMM Science Operations Centre
> ESAC
> Madrid (Spain)
> 
> 
> ================================================================================================
> This message and any attachments are intended for the use of the addressee
or addressees only. The
> unauthorised disclosure, use, dissemination or copying (either in whole or
in part) of its content
> is prohibited. If you received this message in error, please delete it from
your system and notify
> the sender. E-mails can be altered and their integrity cannot be
guaranteed. ESA shall not be liable
> for any e-mail if modified.
> =================================================================================================
> 


-- 
*******************************************************************
Dr. Steve Snowden
XMM-Newton Guest Observer Facility
NASA/GSFC, Code 662
Greenbelt, MD  20771
Phone: 301-286-8100
Fax:   301-286-1684
E-mail: steven.l.snowden@nasa.gov

--------------090607030802000506020409
Content-Type: image/jpeg;
 name="pn.jpg"
Content-Transfer-Encoding: base64
Content-Disposition: inline;
 filename="pn.jpg"
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Message of length 123531 truncated


Reply 2

Resend
From: Rosario Gonzalez Riestra <xmmhelp@sciops.esa.int>
To: steven.l.snowden@nasa.gov
Subject: Re: PN normal vs OOT processing (PR#35716)
Date: Mon May  5 12:08:07 2008

Hello Steve,

Yes, I think you are right: events are assigned a wrong RAWY coordinate, and
therefore the applied CTI correction is wrong. Some of the events are
undercorrected, some are overcorrected, so that lines become broader. You can
see an example, similar to what you describe in the  UHB at:

http://xmm.esac.esa.int/external/xmm_user_support/documentation/uhb_2.5/node40.html

If you need a "deeper" explanation, I'll forward your question to the EPIC
experts.

Regards

Charo



-------------------------------
Rosario Gonzalez-Riestra
XMM Science Operations Centre
ESAC
Madrid (Spain)


Followup 2

Compose reply
Download message
Date: Mon, 05 May 2008 08:17:24 -0400
From: Steve Snowden <steven.l.snowden@nasa.gov>
To: Rosario Gonzalez Riestra <xmmhelp@sciops.esa.int>
Subject: Re: PN normal vs OOT processing (PR#35716)
Hello Charo,
     This will do it.  Thanks!

Cheers,
     Steve

Rosario Gonzalez Riestra wrote:
> Hello Steve,
> 
> Yes, I think you are right: events are assigned a wrong RAWY coordinate,
and
> therefore the applied CTI correction is wrong. Some of the events are
> undercorrected, some are overcorrected, so that lines become broader. You
can
> see an example, similar to what you describe in the  UHB at:
> 
> http://xmm.esac.esa.int/external/xmm_user_support/documentation/uhb_2.5/node40.html
> 
> If you need a "deeper" explanation, I'll forward your question to the EPIC
> experts.
> 
> Regards
> 
> Charo
> 
> 
> 
> -------------------------------
> Rosario Gonzalez-Riestra
> XMM Science Operations Centre
> ESAC
> Madrid (Spain)
> 
> 
> ================================================================================================
> This message and any attachments are intended for the use of the addressee
or addressees only. The
> unauthorised disclosure, use, dissemination or copying (either in whole or
in part) of its content
> is prohibited. If you received this message in error, please delete it from
your system and notify
> the sender. E-mails can be altered and their integrity cannot be
guaranteed. ESA shall not be liable
> for any e-mail if modified.
> =================================================================================================
> 

-- 

**********************************************************

Dr. Steve Snowden
XMM-Newton Guest Observer Facility
NASA/GSFC, Code 662
Greenbelt, MD  20771
Phone: 301-286-8100
Fax: 301-286-1684
E-mail: Steven.L.Snowden@nasa.gov


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