image overlap message for exposure 1 of trigger 1320335
uvot_overlap.pl vrs. 2010-12-20b fem started at 250603d06h09m35s723466usUT
The observation of trigger 1320335 started 2025-06-03T01:12:43.6
Examining file ./1320335_g139_uvot_sky_image.fits
The exposure ID is 770605963
The exposure time is 149.879 (seconds)
The filter is WHITE.
The uvot region is centered at (129.9108,-39.2633) with a roll angle of 307.2
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 (129.9180,-39.2680) with a radius of 3.000 arc min
This is 0.439 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
The XRT error circle is centered at (129.9375,-39.2929) with a radius of 0.038 arc min
This is 2.165 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 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 1320335
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250603d06h09m40s286781usUT
Observation start time is 2025-06-03T01:12:43.6
Examining file ./1320335_g139_uvot_catalog_image.fits
The exposure ID is 770605963
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 19 detected source(s) for 1320335_g139
Aspect correction adds -0.00006 degrees (-0.015 sec of time = -0.18 arc sec) to RA
Aspect correction adds 0.00224 degrees ( 8.06 arcsec) to Dec
Total aspect correction is 8.06 arcsec
Star catalogs centered at 129.9154 , -39.2610 with radius 2.56 arc min.
n_usno: 202 n_gsc: 216
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.30184
RA DEC Mag Color
bright star 0: 129.95868 (08:39:50.08) -39.23918 (-39:14:21.1) 11.30 USNO-V
Mean distance difference (CAT_DELTA) for 19 matched entries is 0.580" for 1320335_g139
Mean and std. dev of mag. difference (MAG_DELTA) are 1.889 and 0.346 for 1320335_g139
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1320335_g139.
Acceptable entries have no ID, XRT distances < 5.75", 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=129.9180 (08:39:40.32) DEC=-39.2680 (-39:16:04.8)
XRT distances are from RA=129.9375 (08:39:44.99) DEC=-39.2929 (-39:17:34.3)
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1320335_g139 with genie
ra=129.90487 (08:39:37.17) dec=-39.27710 (-39:16:37.5) +/- 0.8" mag=20.24+/-0.22
dist=107.1 REFID=18 major=0.9 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 49.1 arc sec from the BAT position.
Found 8 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
129.9045 -39.2771 1.0 -1 USNO-B1 18.61 16.83 17.62 *
129.8990 -39.2747 18.5 -1 USNO-B1 19.54 18.52 18.97
129.9028 -39.2810 15.1 -1 USNO-B1 99.99 19.36 99.99
129.9031 -39.2816 17.1 -1 USNO-B1 18.68 17.76 18.17
129.9038 -39.2753 7.0 -1 GSC2.3 99.99 22.39 99.99
129.9045 -39.2771 0.9 -1 GSC2.3 16.91 19.56 99.99 *
129.8988 -39.2747 19.0 -1 GSC2.3 18.46 20.35 99.99
129.9030 -39.2817 17.3 -1 GSC2.3 17.60 19.60 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
Found 2 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
129.9410 -39.2927 9.8 -1 USNO-B1 19.97 20.25 20.13
129.9408 -39.2927 9.3 -1 GSC2.3 19.71 21.82 99.99
The closest star is 9.35" away.
List UVOT sources within 10" of the XRT position:
There are 82466.750 counts in the bkg source region of 5691.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 14.491 counts/pixel (5-sig UL in 4" is 19.90 mag) for 1320335_g139
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 20.45, XRT distances < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1320335_770605963_250603d06h09m40s286781usUT_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(129.9108,-39.2633,45")
fk5;-circle(129.911807461389,-39.2669464777938,6")
fk5;-circle(129.914017537029,-39.2744731019392,6")
fk5;-circle(129.900414604645,-39.2684695277817,6")
fk5;-circle(129.918786703213,-39.2535755796484,6")
fk5;-circle(129.906662070149,-39.2548637896876,6")
fk5;-circle(129.896314247485,-39.2660244835245,6")
image paragraph message for exposure 1 of trigger 1320335
IMAGE PROBLEM: no overlap
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB250603 (Swift/BAT trigger 1320335) at 01:10:23 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 104 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image covers none of
the XRT error circle. The 8'x8' region for the list of sources generated
on-board covers 100% of the XRT 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 1320335 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250603d06h09m45s338791usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1320335
-expid=770605963 -meonly -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/1320335/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Large extinction of 5.423 found for bat position. Unreliable extinction found
for xrt position. XRT position found for srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 770605963.59608 or about 2025:155:01:12:38 UT
Found 1139 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 19% of the srclist region. Found 166 sources in
srclist catalog. Found 73 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 19 source(s) in Genie image catalog. Found 1 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.45 mag. Found 204 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
21% of the Genie image region.
Genie image analysis:
Found 82466.8 counts in the large background region of 5691.0 pixels or a rate
of 14.491 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 19.72 mag. for a
4-arcsec aperture. The closest srclist source has ra= 129.9390 dec= -39.2896
mag=19.10 sep=12.64". The closest Genie source has ra= 129.9409 dec= -39.2734
mag=20.03 sep=70.70".
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?
770605963 104 WHITE srclist found no candidates.
770605963 104 WHITE image found no candidates.
List afterglow candidates for other finding charts.
770606176 317 U srclist found no candidates.
770606176 317 U image found no candidates.
770606731 872 WHITE srclist found no candidates.
770606731 872 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -39.29286
GRB_ERROR: 5.75
GRB_RA: 129.93746
IMAGE_START_TIME: 01:12:38
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT