image overlap message for exposure 2 of trigger 1086826
uvot_overlap.pl vrs. 2010-12-20b fem started at 211203d09h23m11s655232usUT
The observation of trigger 1086826 started 2021-12-03T09:08:00.4
Examining file 1086826_g321_uvot_sky_image.fits
The exposure ID is 660215280
The exposure time is 46.213 (seconds)
The filter is U.
The uvot region is centered at (170.1769,16.2570) with a roll angle of 114.1
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 (170.1740,16.2560) with a radius of 3.000 arc min
This is 0.180 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
Could not find the location of an XRT error circle
image afterglow message for exposure 2 of trigger 1086826
find_uvot_ag.pl vrs. 2020-10-30 fem started at 211203d09h23m13s488724usUT
Observation start time is 2021-12-03T09:08:00.4
Examining file 1086826_g321_uvot_sources_image.fits
The exposure ID is 660215280
The exposure is 46.213 sec.
The bin size is 2 pixels
The filter is U
There are 0 detected source(s) for 1086826_g321
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 170.1970 , 16.2491 with radius 2.00 arc min.
n_usno: 32 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
*** WARNING -- no XRT distances are available.
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1086826_g321.
Acceptable entries have no ID, BAT distance < 210" or XRT distance < 20", 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=170.1740 (11:20:41.76) DEC=16.2560 (+16:15:21.6)
XRT distances are as reported in catalog file.
There are 16985.113 counts in the bkg source region of 6306.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.693 counts/pixel (5-sig UL in 4" is 18.09 mag) for 1086826_g321
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.09, BAT distances < 210",
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: 1086826_660215280_211203d09h23m13s488724usUT_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(170.1769,16.2570,45")
image paragraph message for exposure 2 of trigger 1086826
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 GRB211203 (Swift/BAT trigger 1086826) at 09:02:38 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 46 seconds with the U filter starting
293 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 0.023.
------- notes for trigger 1086826 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 211203d09h23m16s494895usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1086826
-expid=660215280 -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/1086826/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 660215280.3981 or about 2021:337:09:07:55 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 0 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 18.09 mag. Found 28 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
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?
660215280 293 U srclist data are not available.
660215280 293 U image found no candidates.
List afterglow candidates for other finding charts.
660215068 81 WHITE 170.20769 16.26433 19.25/18.7 120.2 srclist Yes
660215068 81 WHITE image found no candidates.
------- Tokens for Quick GCN -------