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Viewing SASv17.0/84679
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From: Christopher Dessert <dessert@umich.edu>
Subject: Extracting from region partially in FOV
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4 replies: 1 2 3 4
3 followups: 1 2 3

Private message: yes  no

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From: Christopher Dessert <dessert@umich.edu>
Date: Fri, 22 Feb 2019 23:05:17 -0500
Subject: Extracting from region partially in FOV
To: Jan-Uwe Ness <xmmhelp@sciops.esa.int>
--0000000000004749e9058287d189
Content-Type: text/plain; charset="UTF-8"

Hi,

I am extracting a region around a point source that is partially in the
field of view (PN is in small window mode and the point source is close to
the edge of the FOV. In this case, does the backscale task account for the
fact that some of the pixels are unexposed? I tried to test this myself by
extracting from a region totally out of the FOV, and the backscale keyword
returned a positive value while the effective area was zero. So I am
wondering how the SAS tasks take into account regions only partially in the
FOV.

Thanks,

Chris

--0000000000004749e9058287d189
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi,</div><div><br></div><div>I
am extracting a region=
 around a point source that is partially in the field of view (PN is in sma=
ll window mode and the point source is close to the edge of the FOV. In thi=
s case, does the backscale task account for the fact that some of the pixel=
s are unexposed? I tried to test this myself by extracting from a region to=
tally out of the FOV, and the backscale keyword returned a positive value w=
hile the effective area was zero. So I am wondering how the SAS tasks take =
into account regions only partially in the
FOV.</div><div><br></div><div>Th=
anks,</div><div><br></div><div>Chris<br></div></div>

--0000000000004749e9058287d189--


Reply 1

Resend
From: Pedro Rodriguez <xmmhelp@sciops.esa.int>
To: dessert@umich.edu
Subject: Re: Extracting from region partially in FOV (PR#84679)
Date: Mon Feb 25 07:21:57 2019
Hello,

will you please provide the details about exposure id and region coordiantes
so that we can investigate the case?

Thanks,

Pedro



Followup 1

Compose reply
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From: Christopher Dessert <dessert@umich.edu>
Date: Mon, 25 Feb 2019 09:40:31 -0500
Subject: Re: Extracting from region partially in FOV (PR#84679)
To: Pedro Rodriguez <xmmhelp@sciops.esa.int>
--000000000000dc3f060582b8ec9e
Content-Type: text/plain; charset="UTF-8"

Hi Pedro,

An example is 0552210501 around the coordinates RA,Dec =
121.595835,-41.35083 or equivalently X,Y = 25139.57,29573.17 with an
extraction radius of 45" or 900 in X,Y.

Thanks,

Chris

On Mon, Feb 25, 2019 at 1:22 AM Pedro Rodriguez <xmmhelp@sciops.esa.int>
wrote:

> Hello,
>
> will you please provide the details about exposure id and region
> coordiantes
> so that we can investigate the case?
>
> Thanks,
>
> Pedro
>
>
> This message is intended only for the recipient(s) named above. It may
> contain proprietary information and/or
> protected content. Any unauthorised disclosure, use, retention or
> dissemination is prohibited. If you have received
> this e-mail in error, please notify the sender immediately. ESA applies
> appropriate organisational measures to protect
> personal data, in case of data privacy queries, please contact the ESA
> Data Protection Officer (dpo@esa.int).
>
>
>

--000000000000dc3f060582b8ec9e
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr"><div
dir=3D"ltr"><div>Hi Pedro,</div><div=
><br></div><div>An example is 0552210501 around the
coordinates RA,Dec =3D =
121.595835,-41.35083 or equivalently X,Y =3D 25139.57,29573.17 with an extr=
action radius of 45&quot; or 900 in X,Y.
<br></div><div><br></div><div>Than=
ks,</div><div><br></div><div>Chris<br></div></div></div></div><br><div
clas=
s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Feb 25,
201=
9 at 1:22 AM Pedro Rodriguez &lt;<a
href=3D"mailto:xmmhelp@sciops.esa.int">=
xmmhelp@sciops.esa.int</a>&gt;
wrote:<br></div><blockquote class=3D"gmail_q=
uote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,2=
04);padding-left:1ex">Hello,<br>
<br>
will you please provide the details about exposure id and region coordiante=
s<br>
so that we can investigate the case?<br>
<br>
Thanks,<br>
<br>
Pedro<br>
<br>
<br>
This message is intended only for the recipient(s) named above. It may cont=
ain proprietary information and/or<br>
protected content. Any unauthorised disclosure, use, retention or dissemina=
tion is prohibited. If you have received<br>
this e-mail in error, please notify the sender immediately. ESA applies app=
ropriate organisational measures to protect<br>
personal data, in case of data privacy queries, please contact the ESA Data=
 Protection Officer (<a href=3D"mailto:dpo@esa.int"
target=3D"_blank">dpo@e=
sa.int</a>).<br>
<br>
<br>
</blockquote></div>

--000000000000dc3f060582b8ec9e--



Reply 2

Resend
From: Pedro Rodriguez <xmmhelp@sciops.esa.int>
To: dessert@umich.edu
Subject: Re: Extracting from region partially in FOV (PR#84679)
Date: Tue Feb 26 19:07:01 2019
Hi,

I get a backscal value for your example 1072000 which is ~42% of the area of a
circle of radius 900, which seems reasonable when overlaying such a circle on
the PN image.

I have tried another circular regions completely in and out of the exposed area
and got PI*900^2 and 0, respectively, for the backscal parameter.

Pedro

evselect table=P0552210501PNS003PIEVLI0000.FIT \
 expression='((X,Y) IN
circle(25139.57,29573.17,900.))&&(FLAG==0)&&(PATTERN<=4)'
\
 withspectrumset=yes spectrumset=spectrum.fits withspecranges=yes \
 specchannelmin=0 specchannelmax=20479 energycolumn=PI  -V 1

backscale spectrumset=spectrum.fits -V 1

evselect table=P0552210501PNS003PIEVLI0000.FIT \
 expression='((X,Y) IN
circle(27649.817,27844.775,900.))&&(FLAG==0)&&(PATTERN<=4)'
\
 withspectrumset=yes spectrumset=spectrum_in.fits withspecranges=yes \
 specchannelmin=0 specchannelmax=20479 energycolumn=PI  -V 1

backscale spectrumset=spectrum_in.fits -V 1

evselect table=P0552210501PNS003PIEVLI0000.FIT \
 expression='((X,Y) IN
circle(24182.78,29958.97,900.))&&(FLAG==0)&&(PATTERN<=4)'
\
 withspectrumset=yes spectrumset=spectrum_out.fits withspecranges=yes \
 specchannelmin=0 specchannelmax=20479 energycolumn=PI  -V 1

backscale spectrumset=spectrum_out.fits  -V 1



fkeyprint spectrum.fits\[1\] BACKSCAL
fkeyprint spectrum_in.fits\[1\] BACKSCAL
fkeyprint spectrum_out.fits\[1\] BACKSCAL


> --000000000000dc3f060582b8ec9e
> Content-Type: text/plain; charset="UTF-8"
> 
> Hi Pedro,
> 
> An example is 0552210501 around the coordinates RA,Dec =
> 121.595835,-41.35083 or equivalently X,Y = 25139.57,29573.17 with an
> extraction radius of 45" or 900 in X,Y.
> 
> Thanks,
> 
> Chris
> 
> On Mon, Feb 25, 2019 at 1:22 AM Pedro Rodriguez
<xmmhelp@sciops.esa.int>
> wrote:
> 
>> Hello,
>>
>> will you please provide the details about exposure id and region
>> coordiantes
>> so that we can investigate the case?
>>
>> Thanks,
>>
>> Pedro
>>
>>
>> This message is intended only for the recipient(s) named above. It may
>> contain proprietary information and/or
>> protected content. Any unauthorised disclosure, use, retention or
>> dissemination is prohibited. If you have received
>> this e-mail in error, please notify the sender immediately. ESA
applies
>> appropriate organisational measures to protect
>> personal data, in case of data privacy queries, please contact the ESA
>> Data Protection Officer (dpo@esa.int).
>>
>>
>>
> 
> --000000000000dc3f060582b8ec9e
> Content-Type: text/html; charset="UTF-8"
> Content-Transfer-Encoding: quoted-printable
> 
> <div dir=3D"ltr"><div dir=3D"ltr"><div
dir=3D"ltr"><div>Hi Pedro,</div><div=
>><br></div><div>An example is 0552210501 around the
coordinates RA,Dec =3D =
> 121.595835,-41.35083 or equivalently X,Y =3D 25139.57,29573.17 with an
extr=
> action radius of 45" or 900 in X,Y.
<br></div><div><br></div><div>Than=
> ks,</div><div><br></div><div>Chris<br></div></div></div></div><br><div
clas=
> s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon,
Feb 25, 201=
> 9 at 1:22 AM Pedro Rodriguez <<a
href=3D"mailto:xmmhelp@sciops.esa.int">=
> xmmhelp@sciops.esa.int</a>>
wrote:<br></div><blockquote class=3D"gmail_q=
> uote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid
rgb(204,204,2=
> 04);padding-left:1ex">Hello,<br>
> <br>
> will you please provide the details about exposure id and region
coordiante=
> s<br>
> so that we can investigate the case?<br>
> <br>
> Thanks,<br>
> <br>
> Pedro<br>
> <br>
> <br>
> This message is intended only for the recipient(s) named above. It may
cont=
> ain proprietary information and/or<br>
> protected content. Any unauthorised disclosure, use, retention or
dissemina=
> tion is prohibited. If you have received<br>
> this e-mail in error, please notify the sender immediately. ESA applies
app=
> ropriate organisational measures to protect<br>
> personal data, in case of data privacy queries, please contact the ESA
Data=
>  Protection Officer (<a href=3D"mailto:dpo@esa.int"
target=3D"_blank">dpo@e=
> sa.int</a>).<br>
> <br>
> <br>
> </blockquote></div>
> 
> --000000000000dc3f060582b8ec9e--
> 
> 


Followup 2

Compose reply
Download message
From: Christopher Dessert <dessert@umich.edu>
Date: Tue, 26 Feb 2019 14:42:03 -0500
Subject: Re: Extracting from region partially in FOV (PR#84679)
To: Pedro Rodriguez <xmmhelp@sciops.esa.int>
--000000000000044d600582d141b3
Content-Type: text/plain; charset="UTF-8"

Hi Pedro,

Thanks. So the backscale task does account for this. To confirm, does the
ARF/effective area also decrease from its nominal, in-FOV value?

Best,

Chris

On Tue, Feb 26, 2019 at 1:07 PM Pedro Rodriguez <xmmhelp@sciops.esa.int>
wrote:

> Hi,
>
> I get a backscal value for your example 1072000 which is ~42% of the area
> of a
> circle of radius 900, which seems reasonable when overlaying such a circle
> on
> the PN image.
>
> I have tried another circular regions completely in and out of the exposed
> area
> and got PI*900^2 and 0, respectively, for the backscal parameter.
>
> Pedro
>
> evselect table=P0552210501PNS003PIEVLI0000.FIT \
>  expression='((X,Y) IN
> circle(25139.57,29573.17,900.))&&(FLAG==0)&&(PATTERN<=4)'
> \
>  withspectrumset=yes spectrumset=spectrum.fits withspecranges=yes \
>  specchannelmin=0 specchannelmax=20479 energycolumn=PI  -V 1
>
> backscale spectrumset=spectrum.fits -V 1
>
> evselect table=P0552210501PNS003PIEVLI0000.FIT \
>  expression='((X,Y) IN
> circle(27649.817,27844.775,900.))&&(FLAG==0)&&(PATTERN<=4)'
\
>  withspectrumset=yes spectrumset=spectrum_in.fits withspecranges=yes \
>  specchannelmin=0 specchannelmax=20479 energycolumn=PI  -V 1
>
> backscale spectrumset=spectrum_in.fits -V 1
>
> evselect table=P0552210501PNS003PIEVLI0000.FIT \
>  expression='((X,Y) IN
> circle(24182.78,29958.97,900.))&&(FLAG==0)&&(PATTERN<=4)'
> \
>  withspectrumset=yes spectrumset=spectrum_out.fits withspecranges=yes \
>  specchannelmin=0 specchannelmax=20479 energycolumn=PI  -V 1
>
> backscale spectrumset=spectrum_out.fits  -V 1
>
>
>
> fkeyprint spectrum.fits\[1\] BACKSCAL
> fkeyprint spectrum_in.fits\[1\] BACKSCAL
> fkeyprint spectrum_out.fits\[1\] BACKSCAL
>
>
> > --000000000000dc3f060582b8ec9e
> > Content-Type: text/plain; charset="UTF-8"
> >
> > Hi Pedro,
> >
> > An example is 0552210501 around the coordinates RA,Dec =
> > 121.595835,-41.35083 or equivalently X,Y = 25139.57,29573.17 with an
> > extraction radius of 45" or 900 in X,Y.
> >
> > Thanks,
> >
> > Chris
> >
> > On Mon, Feb 25, 2019 at 1:22 AM Pedro Rodriguez
<xmmhelp@sciops.esa.int>
> > wrote:
> >
> >> Hello,
> >>
> >> will you please provide the details about exposure id and region
> >> coordiantes
> >> so that we can investigate the case?
> >>
> >> Thanks,
> >>
> >> Pedro
> >>
> >>
> >> This message is intended only for the recipient(s) named above. It
may
> >> contain proprietary information and/or
> >> protected content. Any unauthorised disclosure, use, retention or
> >> dissemination is prohibited. If you have received
> >> this e-mail in error, please notify the sender immediately. ESA
applies
> >> appropriate organisational measures to protect
> >> personal data, in case of data privacy queries, please contact the
ESA
> >> Data Protection Officer (dpo@esa.int).
> >>
> >>
> >>
> >
> > --000000000000dc3f060582b8ec9e
> > Content-Type: text/html; charset="UTF-8"
> > Content-Transfer-Encoding: quoted-printable
> >
> > <div dir=3D"ltr"><div dir=3D"ltr"><div
dir=3D"ltr"><div>Hi
> Pedro,</div><div=
> >><br></div><div>An example is 0552210501 around
the coordinates RA,Dec
> =3D =
> > 121.595835,-41.35083 or equivalently X,Y =3D 25139.57,29573.17 with an
> extr=
> > action radius of 45" or 900 in X,Y.
<br></div><div><br></div><div>Than=
> > ks,</div><div><br></div><div>Chris<br></div></div></div></div><br><div
> clas=
> > s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On
Mon, Feb 25,
> 201=
> > 9 at 1:22 AM Pedro Rodriguez <<a
href=3D"mailto:xmmhelp@sciops.esa.int
> ">=
> > xmmhelp@sciops.esa.int</a>>
wrote:<br></div><blockquote
> class=3D"gmail_q=
> > uote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid
> rgb(204,204,2=
> > 04);padding-left:1ex">Hello,<br>
> > <br>
> > will you please provide the details about exposure id and region
> coordiante=
> > s<br>
> > so that we can investigate the case?<br>
> > <br>
> > Thanks,<br>
> > <br>
> > Pedro<br>
> > <br>
> > <br>
> > This message is intended only for

Message of length 15830 truncated


Reply 3

Resend
From: Pedro Rodriguez <xmmhelp@sciops.esa.int>
To: dessert@umich.edu
Subject: Re: Extracting from region partially in FOV (PR#84679)
Date: Wed Feb 27 13:15:24 2019
Hi,

> 
> Thanks. So the backscale task does account for this. To confirm, does the
> ARF/effective area also decrease from its nominal, in-FOV value?
> 

yes, but note that in this case it is not scaled with geometric area.

Pedro


Followup 3

Compose reply
Download message
From: Christopher Dessert <dessert@umich.edu>
Date: Wed, 27 Feb 2019 11:05:10 -0500
Subject: Re: Extracting from region partially in FOV (PR#84679)
To: Pedro Rodriguez <xmmhelp@sciops.esa.int>
--0000000000002adb6a0582e257b2
Content-Type: text/plain; charset="UTF-8"

Hi,

I see. What causes the decrease in effective area, then?

Thanks,

Chris

On Wed, Feb 27, 2019 at 7:15 AM Pedro Rodriguez <xmmhelp@sciops.esa.int>
wrote:

> Hi,
>
> >
> > Thanks. So the backscale task does account for this. To confirm, does
the
> > ARF/effective area also decrease from its nominal, in-FOV value?
> >
>
> yes, but note that in this case it is not scaled with geometric area.
>
> Pedro
>
> This message is intended only for the recipient(s) named above. It may
> contain proprietary information and/or
> protected content. Any unauthorised disclosure, use, retention or
> dissemination is prohibited. If you have received
> this e-mail in error, please notify the sender immediately. ESA applies
> appropriate organisational measures to protect
> personal data, in case of data privacy queries, please contact the ESA
> Data Protection Officer (dpo@esa.int).
>
>
>

--0000000000002adb6a0582e257b2
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi,</div><div><br></div><div>I
see. What causes the d=
ecrease in effective area,
then?</div><div><br></div><div>Thanks,</div><div=
><br></div><div>Chris<br></div></div><br><div
class=3D"gmail_quote"><div di=
r=3D"ltr" class=3D"gmail_attr">On Wed, Feb 27, 2019 at 7:15 AM Pedro Rodrig=
uez &lt;<a href=3D"mailto:xmmhelp@sciops.esa.int">xmmhelp@sciops.esa.int</a=
>&gt; wrote:<br></div><blockquote class=3D"gmail_quote"
style=3D"margin:0px=
 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,=
<br>
<br>
&gt; <br>
&gt; Thanks. So the backscale task does account for this. To confirm, does =
the<br>
&gt; ARF/effective area also decrease from its nominal, in-FOV
value?<br>
&gt; <br>
<br>
yes, but note that in this case it is not scaled with geometric area.<br>
<br>
Pedro<br>
<br>
This message is intended only for the recipient(s) named above. It may cont=
ain proprietary information and/or<br>
protected content. Any unauthorised disclosure, use, retention or dissemina=
tion is prohibited. If you have received<br>
this e-mail in error, please notify the sender immediately. ESA applies app=
ropriate organisational measures to protect<br>
personal data, in case of data privacy queries, please contact the ESA Data=
 Protection Officer (<a href=3D"mailto:dpo@esa.int"
target=3D"_blank">dpo@e=
sa.int</a>).<br>
<br>
<br>
</blockquote></div>

--0000000000002adb6a0582e257b2--



Reply 4

Resend
From: Pedro Rodriguez <xmmhelp@sciops.esa.int>
To: dessert@umich.edu
Subject: Re: Extracting from region partially in FOV (PR#84679)
Date: Wed Feb 27 17:21:33 2019
Hi,

my apologies if I was not clear in my previous message: the effective area is
smaller when part of the extraction region is outside the exposed region.

Cheers,

Pedro

> 
> Hi,
> 
> I see. What causes the decrease in effective area, then?
> 
> Thanks,
> 
> Chris
> 
> On Wed, Feb 27, 2019 at 7:15 AM Pedro Rodriguez
<xmmhelp@sciops.esa.int>
> wrote:
> 
>> Hi,
>>
>> >
>> > Thanks. So the backscale task does account for this. To confirm,
does the
>> > ARF/effective area also decrease from its nominal, in-FOV value?
>> >
>>
>> yes, but note that in this case it is not scaled with geometric area.
>>
>> Pedro
>>
>> This message is intended only for the recipient(s) named above. It may
>> contain proprietary information and/or
>> protected content. Any unauthorised disclosure, use, retention or
>> dissemination is prohibited. If you have received
>> this e-mail in error, please notify the sender immediately. ESA
applies
>> appropriate organisational measures to protect
>> personal data, in case of data privacy queries, please contact the ESA
>> Data Protection Officer (dpo@esa.int).
>>
>>
>>
> 
> --0000000000002adb6a0582e257b2
> Content-Type: text/html; charset="UTF-8"
> Content-Transfer-Encoding: quoted-printable
> 
> <div dir=3D"ltr"><div>Hi,</div><div><br></div><div>I
see. What causes the d=
> ecrease in effective area,
then?</div><div><br></div><div>Thanks,</div><div=
>><br></div><div>Chris<br></div></div><br><div
class=3D"gmail_quote"><div di=
> r=3D"ltr" class=3D"gmail_attr">On Wed, Feb 27, 2019 at 7:15 AM Pedro
Rodrig=
> uez <<a href=3D"mailto:xmmhelp@sciops.esa.int">xmmhelp@sciops.esa.int</a=
>>> wrote:<br></div><blockquote class=3D"gmail_quote"
style=3D"margin:0px=
>  0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">Hi,=
> <br>
> <br>
> > <br>
> > Thanks. So the backscale task does account for this. To confirm, does
=
> the<br>
> > ARF/effective area also decrease from its nominal, in-FOV
value?<br>
> > <br>
> <br>
> yes, but note that in this case it is not scaled with geometric
area.<br>
> <br>
> Pedro<br>
> <br>
> This message is intended only for the recipient(s) named above. It may
cont=
> ain proprietary information and/or<br>
> protected content. Any unauthorised disclosure, use, retention or
dissemina=
> tion is prohibited. If you have received<br>
> this e-mail in error, please notify the sender immediately. ESA applies
app=
> ropriate organisational measures to protect<br>
> personal data, in case of data privacy queries, please contact the ESA
Data=
>  Protection Officer (<a href=3D"mailto:dpo@esa.int"
target=3D"_blank">dpo@e=
> sa.int</a>).<br>
> <br>
> <br>
> </blockquote></div>
> 
> --0000000000002adb6a0582e257b2--
> 
> 

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