image overlap message for exposure 1 of trigger 1209373
uvot_overlap.pl vrs. 2010-12-20b fem started at 240117d09h14m47s247343usUT
The observation of trigger 1209373 started 2024-01-17T08:19:41.8
Examining file 1209373_g133_uvot_sky_image.fits
The exposure ID is 727172381
The exposure time is 1.689 (seconds)
The filter is WHITE.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
*** Warning -- found 22720 null pixels in the image.
The uvot region is centered at (103.7404,31.2248) with a roll angle of 309.2
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 (246.2160,-16.1030) with a radius of 3.000 arc min
This is 7842.365 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 (246.2298,-16.1189) with a radius of 0.078 arc min
This is 7843.370 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1209373
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240117d09h14m48s120389usUT
Observation start time is 2024-01-17T08:19:41.8
Examining file 1209373_g133_uvot_sources_image.fits
The exposure ID is 727172381
The exposure is 1.689 sec.
The bin size is 2 pixels
The filter is WHITE
There are 0 detected source(s) for 1209373_g133
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 103.7476 , 31.2058 with radius 2.00 arc min.
n_usno: 62 n_gsc: 65
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1209373_g133.
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=246.2160 (16:24:51.84) DEC=-16.1030 (-16:06:10.8)
XRT distances are from RA=246.2298 (16:24:55.15) DEC=-16.1189 (-16:07:08.0)
Found 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
Do not compute counts in XRT region because position is too far from center.
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 19.20, XRT distances < 11.75",
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: 1209373_727172381_240117d09h14m48s120389usUT_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(103.7404,31.2248,45")
image paragraph message for exposure 1 of trigger 1209373
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 GRB240117 (Swift/BAT trigger 1209373) at 08:17:27 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 2 seconds with the White filter
starting 101 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 0.612.
------- notes for trigger 1209373 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240117d09h14m49s625118usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1209373
-expid=727172381 -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/1209373/
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 727172381.7931 or about 2024:017:08:19:36 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 19.20 mag. Found 65 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 11% of the
Genie image region. The XRT position was OUTSIDE the star catalog search
region. The Genie image is INCOMPLETE with 22720 null pixels.
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?
727172381 101 WHITE srclist data are not available.
727172381 101 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------