image overlap message for exposure 2 of trigger 1209398
uvot_overlap.pl vrs. 2010-12-20b fem started at 240117d16h00m16s136349usUT
The observation of trigger 1209398 started 2024-01-17T15:47:46.5
Examining file 1209398_g370_uvot_sky_image.fits
The exposure ID is 727199266
The exposure time is 119.563 (seconds)
The filter is U.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
*** Warning -- found 18261 null pixels in the image.
The uvot region is centered at (186.2278,-62.7149) with a roll angle of 119.4
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 (186.2210,-62.7140) with a radius of 3.000 arc min
This is 0.194 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 1209398
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240117d16h00m17s243103usUT
Observation start time is 2024-01-17T15:47:46.5
Examining file 1209398_g370_uvot_sources_image.fits
The exposure ID is 727199266
The exposure is 119.563 sec.
The bin size is 2 pixels
The filter is U
There are 3 detected source(s) for 1209398_g370
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 186.2714 , -62.7097 with radius 2.00 arc min.
n_usno: 278 n_gsc: 352
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.8853
RA DEC Mag Color
bright star 0: 186.23549 (12:24:56.52) -62.71836 (-62:43:06.1) 11.89 GSC-V
*** WARNING -- no XRT distances are available.
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 1209398_g370.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=186.2210 (12:24:53.04) DEC=-62.7140 (-62:42:50.4)
XRT distances are as reported in catalog file.
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1209398_g370 with genie
ra=186.28164 (12:25:07.59) dec=-62.71520 (-62:42:54.7) +/- 0.8" mag=17.41+/-0.16
dist=100.2 REFID=1 major=1.2 minor=1.0 flag=0
This source is near the edge of image (0.893)
Found 24 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
186.2832 -62.7120 11.6 -1 USNO-B1 17.32 16.13 16.66 *
186.2846 -62.7128 10.0 -1 USNO-B1 70.87 17.20 99.99 *
186.2757 -62.7163 10.5 -1 USNO-B1 17.04 16.75 16.88 *
186.2849 -62.7135 8.1 -1 USNO-B1 99.99 16.98 99.99 *
186.2851 -62.7137 7.9 -1 USNO-B1 17.94 15.77 16.73 *
186.2806 -62.7164 4.6 -1 USNO-B1 18.87 18.18 18.49 *
186.2816 -62.7165 4.8 -1 USNO-B1 17.90 17.80 17.84 *
186.2817 -62.7173 7.6 -1 USNO-B1 19.77 17.27 18.38 *
186.2880 -62.7155 10.5 -1 USNO-B1 13.02 12.59 12.78 *
186.2898 -62.7146 13.6 -1 USNO-B1 99.99 15.46 99.99 *
186.2906 -62.7140 15.4 -1 USNO-B1 16.93 16.20 16.52 *
186.2876 -62.7161 10.5 -1 USNO-B1 14.21 11.39 12.64 *
186.2901 -62.7168 15.0 -1 USNO-B1 99.99 16.18 99.99 *
186.2913 -62.7171 17.3 -1 USNO-B1 16.98 16.76 16.85 *
186.2748 -62.7109 19.1 -1 GSC2.3 99.99 99.99 99.99 *
186.2831 -62.7119 12.1 -1 GSC2.3 99.99 99.99 99.99 *
186.2755 -62.7163 10.9 -1 GSC2.3 16.53 99.99 16.98 *
186.2850 -62.7139 7.2 -1 GSC2.3 99.99 99.99 99.99 *
186.2802 -62.7164 5.0 -1 GSC2.3 99.99 99.99 99.99 *
186.2810 -62.7172 7.2 -1 GSC2.3 99.99 99.99 99.99 *
186.2810 -62.7177 9.0 -1 GSC2.3 99.99 99.99 99.99 *
186.2876 -62.7158 10.1 -1 GSC2.3 11.73 99.99 12.02 *
186.2745 -62.7193 18.9 -1 GSC2.3 99.99 99.99 99.99 *
186.2905 -62.7138 15.5 -1 GSC2.3 16.81 99.99 17.35 *
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 1209398_g370 with genie
ra=186.26109 (12:25:02.66) dec=-62.70428 (-62:42:15.4) +/- 1.3" mag=19.38+/-0.39
dist=74.9 REFID=2 major=1.2 minor=0.8 flag=0
Found 13 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
186.2662 -62.7041 8.5 -1 USNO-B1 18.40 19.15 18.82 *
186.2581 -62.7053 6.2 -1 USNO-B1 18.22 17.91 18.05 *
186.2616 -62.7025 6.4 -1 USNO-B1 18.23 17.51 17.83 *
186.2514 -62.7051 16.2 -1 USNO-B1 17.36 16.64 16.96
186.2675 -62.7074 15.4 -1 GSC2.3 99.99 99.99 99.99
186.2724 -62.7029 19.4 -1 GSC2.3 99.99 99.99 99.99
186.2581 -62.7053 6.2 -1 GSC2.3 99.99 99.99 99.99 *
186.2615 -62.7026 6.0 -1 GSC2.3 99.99 99.99 99.99 *
186.2623 -62.7013 11.0 -1 GSC2.3 99.99 99.99 99.99 *
186.2513 -62.7051 16.5 -1 GSC2.3 16.52 99.99 17.09
186.2629 -62.6998 16.3 -1 GSC2.3 99.99 99.99 99.99
186.2579 -62.7010 13.0 -1 GSC2.3 99.99 99.99 99.99 *
186.2532 -62.7008 18.1 -1 GSC2.3 99.99 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1209398_g370 with genie
ra=186.26971 (12:25:04.73) dec=-62.70996 (-62:42:35.9) +/- 0.8" mag=17.65+/-0.17
dist=81.7 REFID=3 major=3.0 minor=2.6 flag=0
Found 12 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
186.2679 -62.7104 3.3 -1 USNO-B1 17.62 16.94 17.24 *
186.2661 -62.7121 9.8 -1 USNO-B1 18.34 17.92 18.11 *
186.2787 -62.7067 18.9 -1 USNO-B1 20.29 18.41 19.24
186.2783 -62.7065 18.9 -1 USNO-B1 99.99 17.59 99.99
186.2608 -62.7106 14.9 -1 USNO-B1 19.25 16.95 17.97
186.2680 -62.7104 3.3 -1 GSC2.3 16.93 99.99 99.99 *
186.2748 -62.7089 9.2 -1 GSC2.3 99.99 99.99 99.99 *
186.2748 -62.7109 9.1 -1 GSC2.3 99.99 99.99 99.99 *
186.2675 -62.7074 10.0 -1 GSC2.3 99.99 99.99 99.99 *
186.2661 -62.7122 10.0 -1 GSC2.3 99.99 99.99 99.99 *
186.2781 -62.7063 19.1 -1 GSC2.3 99.99 99.99 99.99
186.2609 -62.7105 14.6 -1 GSC2.3 17.02 99.99 17.46
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
There are 2760.5532 counts in the bkg source region of 403.00000 pixels.
Rate in bkg region from 0 to 45 arcsec is 6.850 counts/pixel (5-sig UL in 4" is 18.62 mag) for 1209398_g370
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.61, 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: 1209398_727199266_240117d16h00m17s243103usUT_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(186.2278,-62.7149,45")
image paragraph message for exposure 2 of trigger 1209398
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 GRB240117 (Swift/BAT trigger 1209398) at 15:41:35 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 120 seconds with the U filter starting
338 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 1209398 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240117d16h00m18s301653usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1209398
-expid=727199266 -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/1209398/
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. No XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 727199266.51304 or about 2024:017:15:47:41 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 3 source(s) in Genie image catalog. Found 3 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 18.61 mag. Found 352 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 61% of the
Genie image region. The Genie image is INCOMPLETE with 18261 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?
727199266 338 U srclist data are not available.
727199266 338 U image found no candidates.
List afterglow candidates for other finding charts.
727199108 180 ? srclist data are not available.
727199108 180 WHITE image found no candidates.
------- Tokens for Quick GCN -------