image overlap message for exposure 1 of trigger 994725
uvot_overlap.pl vrs. 2010-12-20b fem started at 200905d09h57m42s891298usUT
The observation of trigger 994725 started 2020-09-05T09:46:57.6
Examining file 994725_g170_uvot_sky_image.fits
The exposure ID is 620992017
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (244.9691,-15.8717) with a roll angle of 279.0
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (244.9680,-15.8610) with a radius of 3.000 arc min
This is 0.643 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (244.9727,-15.8732) with a radius of 0.078 arc min
This is 0.229 arc min from the center of the uvot region
The area of the XRT error circle is 0.019 sq. arc min
The UVOT/XRT overlap is 0.019 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 994725
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200905d09h57m44s824934usUT
Observation start time is 2020-09-05T09:46:57.6
Examining file 994725_g170_uvot_sources_image.fits
The exposure ID is 620992017
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 7 detected source(s) for 994725_g170
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 244.9697 , -15.8691 with radius 2.58 arc min.
n_usno: 165 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 7 entries without IDs and 7 entries that are acceptable afterglow candidates for 994725_g170.
Acceptable entries have no ID, XRT distances < 11.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
Magnitude criteria will be applied later.
BAT distances are from RA=244.9680 (16:19:52.32) DEC=-15.8610 (-15:51:39.6)
XRT distances are from RA=244.9727 (16:19:53.45) DEC=-15.8732 (-15:52:23.5)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 994725_g170 with genie
ra=244.94481 (16:19:46.75) dec=-15.88016 (-15:52:48.6) +/- 0.8" mag=18.54+/-0.16
dist=99.8 REFID=1 major=1.2 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 105.9 arc sec from the BAT position.
This source is near the edge of image (0.961)
Found 3 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 12 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
244.9447 -15.8806 1.6 -1 USNO-B1 19.00 17.88 18.38 *
244.9465 -15.8840 15.1 -1 USNO-B1 99.99 19.75 99.99 *
244.9444 -15.8808 2.8 -1 USNO-B1 20.22 18.24 19.12 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 994725_g170 with genie
ra=244.96540 (16:19:51.70) dec=-15.85808 (-15:51:29.1) +/- 0.8" mag=17.85+/-0.15
dist=60.0 REFID=2 major=1.6 minor=1.2 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 13.8 arc sec from the BAT position.
Found 1 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
244.9692 -15.8603 15.4 -1 USNO-B1 20.55 19.69 20.07
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 1.6
-----------------
Entry 2 in the list of sources is a candidate afterglow for 994725_g170 with genie
ra=244.94912 (16:19:47.79) dec=-15.86175 (-15:51:42.3) +/- 0.7" mag=15.26+/-0.14
dist=91.5 REFID=3 major=1.1 minor=0.4 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 65.5 arc sec from the BAT position.
This source is near the edge of image (0.957)
Found 4 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
244.9505 -15.8669 19.1 -1 USNO-B1 16.20 14.67 15.35 *
244.9484 -15.8614 2.8 -1 USNO-B1 16.01 14.46 15.15 *
244.9449 -15.8624 14.7 -1 USNO-B1 18.84 17.90 18.32 *
244.9447 -15.8618 15.2 -1 USNO-B1 20.69 99.99 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 994725_g170 with genie
ra=244.99454 (16:19:58.69) dec=-15.87370 (-15:52:25.3) +/- 0.7" mag=15.96+/-0.14
dist=75.7 REFID=4 major=1.5 minor=1.1 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 102.7 arc sec from the BAT position.
This source is near the edge of image (0.922)
Found 2 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
244.9901 -15.8739 15.4 -1 USNO-B1 21.37 19.41 20.28 *
244.9919 -15.8695 17.7 -1 USNO-B1 99.99 19.43 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
-----------------
Entry 4 in the list of sources is a candidate afterglow for 994725_g170 with genie
ra=244.97223 (16:19:53.34) dec=-15.87492 (-15:52:29.7) +/- 0.7" mag=16.98+/-0.14
dist=6.4 REFID=5 major=1.2 minor=0.5 flag=3 (neighbor+blended)
Found 0 entries in star catalog(s) within 20.0" of the candidate.
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries within 13.5" or brighter than 12 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 994725_g170 with genie
ra=244.97150 (16:19:53.16) dec=-15.87760 (-15:52:39.4) +/- 0.7" mag=17.12+/-0.14
dist=16.4 REFID=6 major=0.6 minor=0.3 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 61.0 arc sec from the BAT position.
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable minor profile of 0.3
-----------------
Entry 6 in the list of sources is a candidate afterglow for 994725_g170 with genie
ra=244.97019 (16:19:52.85) dec=-15.87824 (-15:52:41.7) +/- 0.7" mag=14.96+/-0.14
dist=20.1 REFID=7 major=0.7 minor=0.5 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 62.5 arc sec from the BAT position.
Found 1 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
244.9646 -15.8795 19.8 -1 USNO-B1 17.49 16.02 16.68
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=244.97223 (16:19:53.34) dec=-15.87492 (-15:52:29.7) +/- 0.7" mag=16.98+/-0.14 dist=6.4 REFID=5 flag=3
Unmatched source ra=244.97150 (16:19:53.16) dec=-15.87760 (-15:52:39.4) +/- 0.7" mag=17.12+/-0.14 dist=16.4 REFID=6 flag=3
There are 1.9018792E+05 counts in the bkg source region of 6032.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 31.530 counts/pixel (5-sig UL in 4" is 19.48 mag) for 994725_g170
There are 2826.7007 counts in the src source region of 51.000000 pixels.
Rate in src region with 4 arcsec radius is 55.426 counts/pixel for 994725_g170
There are 37510.043 counts in the cand_src_bkg source region of 1199.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 31.284 counts/pixel (5-sig UL in 4" is 19.48 mag) for 994725_g170
There are 1 candidate(s) outside XRT error circle with mag < 19.47
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.03, XRT distances < 11.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 994725_620992017_200905d09h57m44s824934usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(244.9691,-15.8717,45")
fk5;-circle(244.965396173274,-15.8580810533851,6")
fk5;-circle(244.972230238284,-15.8749222871527,6")
fk5;-circle(244.971499080964,-15.8776039935407,6")
fk5;-circle(244.970187907424,-15.8782389181535,6")
Region file: 994725_620992017_200905d09h57m44s824934usUT_cand_src.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(244.972230238284,-15.8749222871527,4")
Region file: 994725_620992017_200905d09h57m44s824934usUT_cand_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(244.972230238284,-15.8749222871527,25")
fk5;-circle(244.972230238284,-15.8749222871527,15")
fk5;-circle(244.971499080964,-15.8776039935407,6")
fk5;-circle(244.970187907424,-15.8782389181535,6")
image paragraph message for exposure 1 of trigger 994725
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no aspect solution
SRCLIST PROBLEM: no srclist afterglow info
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB200905 (Swift/BAT trigger 994725) at 09:44:06 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 145 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image processing
FAILED because of no aspect solution. Results from the list of sources
generated on-board are not available at this time. No correction has been made
for the expected extinction corresponding to E(B-V) of 0.30.
------- notes for trigger 994725 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200905d09h57m50s486621usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=994725
-expid=620992017 -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/994725/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 620992017.62644 or about 2020:249:09:46:52 UT
No information found about the number of stars in the star catalog for srclist
region.
THERE IS NO ASPECT SOLUTION for the image data.
Found 7 source(s) in Genie image catalog. 2 source(s) are within 20.0" of the
xrt position. Found 7 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.03 mag. Found 161 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 16% of the Genie image region.
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the image data with mag < 19.47 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=244.97019
(16:19:52.85), DEC=-15.87824 (-15:52:41.7) (J2000). It has a mag of 14.96. It
is 62.5" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 145 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 16:19:52.85 = 244.97019
DEC(J2000) = -15:52:41.7 = -15.87824
with a 90%-confidence error radius of about 0.74 arc sec. The estimated
magnitude is 14.96 with a 1-sigma error of about 0.14. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.30.
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 145 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 16:19:53.34 = 244.97223
DEC(J2000) = -15:52:29.7 = -15.87492
with a 90%-confidence error radius of about 0.75 arc sec. This position is 6.41
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.98 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.30.
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
620992017 145 WHITE srclist data are not available.
620992017 145 WHITE 244.97223 -15.87492 16.98/20.0 6.4 image No
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------