image overlap message for exposure 1 of trigger 1143281
uvot_overlap.pl vrs. 2010-12-20b fem started at 221204d10h55m10s524192usUT
The observation of trigger 1143281 started 2022-12-04T10:48:31.6
Examining file 1143281_g205_uvot_sky_image.fits
The exposure ID is 691843711
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (299.5328,35.0948) with a roll angle of 226.5
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 (299.5290,35.0050) with a radius of 3.000 arc min
This is 5.390 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 0.00 sq. arc min or 0.00 of the BAT error circle
The XRT error circle is centered at (299.5354,35.0978) with a radius of 0.088 arc min
This is 0.222 arc min from the center of the uvot region
The area of the XRT error circle is 0.025 sq. arc min
The UVOT/XRT overlap is 0.025 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1143281
find_uvot_ag.pl vrs. 2020-10-30 fem started at 221204d10h55m12s703838usUT
Observation start time is 2022-12-04T10:48:31.6
Examining file 1143281_g205_uvot_sources_image.fits
The exposure ID is 691843711
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 2 detected source(s) for 1143281_g205
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 299.5451 , 35.0754 with radius 2.00 arc min.
n_usno: 185 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 2 entries without IDs and 0 entries that are acceptable afterglow candidates for 1143281_g205.
Acceptable entries have no ID, XRT distances < 13.25", 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=299.5290 (19:58:06.96) DEC=35.0050 (+35:00:18.0)
XRT distances are from RA=299.5354 (19:58:08.50) DEC=35.0978 (+35:05:52.1)
*** WARNING 100 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 0:
ra=299.53693 dec= 35.07354 +/- 1.1" mag=14.10+/-0.35 dist=87.5 REFID=1 flag=18
Found 2 entries in star catalog(s) within 20" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
299.5360 35.0941 13.5 -1 USNO-B1 99.99 18.18 99.99
299.5381 35.0976 8.0 -1 USNO-B1 17.55 16.05 16.72
The closest star is 8.04" away.
List UVOT sources within 20" of the XRT position:
There are 0.0000000 counts in the bkg source region of 6308.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 0.000 counts/pixel (5-sig UL in 4" is 23.47 mag) for 1143281_g205
There are 0.0000000 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 0.000 counts/pixel for 1143281_g205
There are 0.0000000 counts in the xrt_bkg source region of 1246.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 0.000 counts/pixel (5-sig UL in 4" is 23.47 mag) for 1143281_g205
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 24.03, XRT distances < 13.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 1143281_691843711_221204d10h55m12s703838usUT_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(299.5328,35.0948,45")
Region file: 1143281_691843711_221204d10h55m12s703838usUT_xrt.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(299.53542,35.09781,8")
Region file: 1143281_691843711_221204d10h55m12s703838usUT_xrt_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(299.53542,35.09781,25")
fk5;-circle(299.53542,35.09781,15")
image paragraph message for exposure 1 of trigger 1143281
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.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB221204 (Swift/BAT trigger 1143281) at 10:45:05 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 175 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 large, but uncertain, extinction expected.
------- notes for trigger 1143281 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 221204d10h55m55s534490usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1143281
-expid=691843711 -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/1143281/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for Genie image. BAT position found.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 691843711.63732 or about 2022:338:10:48:26 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 2 source(s) in Genie image catalog. Found 2 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 24.03 mag. Found 181 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 31% of the
Genie image region. The closest Genie source has ra= 299.5369 dec= 35.0735
mag=14.10 sep=87.48".
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?
691843711 175 WHITE srclist data are not available.
691843711 175 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------