srclist overlap message for exposure 1 of trigger 1350381
uvot_overlap.pl vrs. 2010-12-20b fem started at 250917d06h34m16s862239usUT
The observation of trigger 1350381 started 2025-09-17T06:30:39.3
Examining file 1350381_g174_uvot_sky_srclist.fits
The exposure ID is 779783439
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (291.3698,11.1134) with a roll angle of 277.8
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (291.3780,11.1130) with a radius of 3.000 arc min
This is 0.482 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 28.27 sq. arc min or 1.00 of the BAT error circle
Could not find the location of an XRT error circle
srclist afterglow message for exposure 1 of trigger 1350381
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250917d06h34m21s371345usUT
Observation start time is 2025-09-17T06:30:39.3
Examining file 1350381_g174_uvot_catalog_srclist.fits
The exposure ID is 779783439
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1350381_g174
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
Dimmest detected source in 1350381_g174 has mag 19.35
Aspect correction adds -0.00058 degrees (-0.139 sec of time = -2.05 arc sec) to RA
Aspect correction adds 0.00003 degrees ( 0.12 arcsec) to Dec
Total aspect correction is 2.05 arcsec
Star catalogs centered at 291.3830 , 11.1158 with radius 6.10 arc min.
n_usno: 1527 n_gsc: 2777
*** WARNING -- bright star catalog has 4 entries brighter than 12 mag
The brightest has mag 8.84936
RA DEC Mag Color
bright star 0: 291.34622 (19:25:23.09) 11.11474 (+11:06:53.1) 10.54 USNO-V
bright star 1: 291.40320 (19:25:36.77) 11.06283 (+11:03:46.2) 8.85 USNO-V
bright star 2: 291.37930 (19:25:31.03) 11.19448 (+11:11:40.1) 11.39 USNO-V
bright star 3: 291.38727 (19:25:32.94) 11.03459 (+11:02:04.5) 11.98 GSC-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 125 matched entries is 0.729" for 1350381_g174
Mean and std. dev of mag. difference (MAG_DELTA) are 2.409 and 0.491 for 1350381_g174
Found 67 entries without IDs and 3 entries that are acceptable afterglow candidates for 1350381_g174.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
63 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=291.3780 (19:25:30.72) DEC=11.1130 (+11:06:46.8)
XRT distances are as reported in catalog file.
*** WARNING 35 per cent of entries have no IDs.
-----------------
Entry 12 in the list of sources is a candidate afterglow for 1350381_g174 with 3x3 stamp
ra=291.40276 (19:25:36.66) dec=11.11959 (+11:07:10.5) +/- 1.1" mag=18.66+/-0.35
dist=90.6 REFID=51
src: 12 srclist_match has ID
src: 12 distr. of nearby unmatched sources: 1 0 0 0 0
Found 13 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 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
291.3984 11.1184 15.8 -1 USNO-B1 99.99 17.36 99.99
291.3996 11.1194 11.2 -1 USNO-B1 16.83 18.06 17.51
291.4026 11.1190 2.2 -1 USNO-B1 16.63 14.35 15.36 *
291.4031 11.1226 10.9 -1 USNO-B1 18.59 16.56 17.46
291.4043 11.1167 11.7 -1 USNO-B1 19.50 16.29 17.72
291.4060 11.1219 14.0 -1 USNO-B1 18.88 16.63 17.63
291.4069 11.1221 17.1 -1 USNO-B1 19.43 17.22 18.20
291.3985 11.1184 15.6 -1 GSC2.3 99.99 20.99 99.99
291.4001 11.1194 9.5 -1 GSC2.3 99.99 99.99 99.99
291.4026 11.1191 1.7 -1 GSC2.3 99.99 17.09 15.65 *
291.4032 11.1225 10.7 -1 GSC2.3 99.99 19.37 18.52
291.4044 11.1166 12.2 -1 GSC2.3 99.99 20.40 18.16
291.4066 11.1220 16.2 -1 GSC2.3 99.99 19.94 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 41 in the list of sources is a candidate afterglow for 1350381_g174 with 3x3 stamp
ra=291.37333 (19:25:29.60) dec=11.15178 (+11:09:06.4) +/- 1.1" mag=17.84+/-0.35
dist=140.6 REFID=34
src: 41 srclist_match has ID
src: 41 distr. of nearby unmatched sources: 1 0 0 0 0
Found 14 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
291.3758 11.1480 16.2 -1 USNO-B1 99.99 17.32 99.99
291.3740 11.1517 2.5 -1 USNO-B1 16.45 14.68 15.46 *
291.3684 11.1508 17.7 -1 USNO-B1 99.99 17.60 99.99
291.3696 11.1542 15.9 -1 USNO-B1 17.52 14.84 16.03
291.3744 11.1564 17.0 -1 USNO-B1 99.99 17.55 99.99
291.3719 11.1569 19.2 -1 USNO-B1 19.24 16.69 17.82
291.3758 11.1481 16.0 -1 GSC2.3 99.99 99.99 99.99
291.3729 11.1491 9.7 -1 GSC2.3 99.99 21.92 99.99
291.3766 11.1517 11.5 -1 GSC2.3 99.99 20.72 99.99
291.3738 11.1518 1.6 -1 GSC2.3 99.99 17.18 16.29 *
291.3687 11.1507 16.6 -1 GSC2.3 99.99 21.16 99.99
291.3696 11.1542 15.9 -1 GSC2.3 99.99 18.24 16.46
291.3745 11.1564 17.3 -1 GSC2.3 99.99 21.01 18.85
291.3719 11.1569 19.2 -1 GSC2.3 99.99 20.36 18.72
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 54 in the list of sources is a candidate afterglow for 1350381_g174 with 1x1 stamp
ra=291.39078 (19:25:33.79) dec=11.15585 (+11:09:21.1) +/- 1.1" mag=19.03+/-0.35
dist=160.7 REFID=157
src: 54 srclist_match has ID
src: 54 distr. of nearby unmatched sources: 1 0 0 0 0
Found 16 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
291.3907 11.1532 9.6 -1 USNO-B1 17.08 14.41 15.60
291.3860 11.1543 17.7 -1 USNO-B1 18.60 15.57 16.91
291.3937 11.1537 12.8 -1 USNO-B1 18.60 16.33 17.34
291.3955 11.1539 18.2 -1 USNO-B1 18.46 16.51 17.38
291.3911 11.1553 2.3 -1 USNO-B1 16.95 15.00 15.86 *
291.3939 11.1547 11.6 -1 USNO-B1 19.58 17.03 18.16
291.3907 11.1531 9.8 -1 GSC2.3 99.99 17.97 15.89
291.3862 11.1543 17.2 -1 GSC2.3 99.99 19.67 17.70
291.3937 11.1536 13.0 -1 GSC2.3 99.99 19.86 18.36
291.3956 11.1539 18.4 -1 GSC2.3 99.99 19.66 18.15
291.3916 11.1550 4.0 -1 GSC2.3 99.99 19.12 99.99
291.3909 11.1560 0.5 -1 GSC2.3 99.99 19.04 16.72 *
291.3874 11.1581 14.6 -1 GSC2.3 99.99 21.24 99.99
291.3945 11.1574 14.4 -1 GSC2.3 99.99 99.99 99.99
291.3922 11.1595 14.1 -1 GSC2.3 99.99 22.01 99.99
291.3950 11.1596 19.9 -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 4" or brighter than 13 mag
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.66, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 1350381
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: srclist filled telemetry buffer
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 GRB250917 (Swift/BAT trigger 1350381) at 06:27:44 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 138 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 100% of the BAT error circle. The list of
sources is typically complete to about 18 mag. No correction has been made for
the large, but uncertain, extinction expected.
------- notes for trigger 1350381 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250917d06h34m25s869806usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1350381
-expid=779783439 -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1350381/
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.
*** Warning -- no exposure found, using srclist assumed value.
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 779783439.3242 or about 2025:261:06:30:34 UT
Found 2172 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 40% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 67 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.66 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 19.35 mag.
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?
779783439 138 WHITE srclist found no candidates.
779783439 138 ? image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------