image overlap message for exposure 2 of trigger 1297832
uvot_overlap.pl vrs. 2010-12-20b fem started at 250322d21h39m34s374240usUT
The observation of trigger 1297832 started 2025-03-22T16:11:38.9
Examining file ./1297832_g325_uvot_sky_image.fits
The exposure ID is 764352698
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (106.7266,7.1981) with a roll angle of 272.8
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 (106.7340,7.1990) with a radius of 3.000 arc min
This is 0.445 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 (106.7605,7.1931) with a radius of 0.043 arc min
This is 2.041 arc min from the center of the uvot region
The area of the XRT error circle is 0.006 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 2 of trigger 1297832
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250322d21h39m52s756756usUT
Observation start time is 2025-03-22T16:11:38.9
Examining file ./1297832_g325_uvot_catalog_image.fits
The exposure ID is 764352698
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 27 detected source(s) for 1297832_g325
Aspect correction adds -0.00137 degrees (-0.329 sec of time = -4.90 arc sec) to RA
Aspect correction adds 0.00004 degrees ( 0.14 arcsec) to Dec
Total aspect correction is 4.90 arcsec
Star catalogs centered at 106.7267 , 7.1996 with radius 2.57 arc min.
n_usno: 211 n_gsc: 217
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.23964
RA DEC Mag Color
bright star 0: 106.72003 (07:06:52.81) 7.15923 (+07:09:33.2) 11.24 USNO-V
bright star 1: 106.75558 (07:07:01.34) 7.21485 (+07:12:53.5) 11.80 GSC-V
Mean distance difference (CAT_DELTA) for 26 matched entries is 0.357" for 1297832_g325
Mean and std. dev of mag. difference (MAG_DELTA) are 0.319 and 0.330 for 1297832_g325
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1297832_g325.
Acceptable entries have no ID, XRT distances < 6.5", 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=106.7340 (07:06:56.16) DEC= 7.1990 (+07:11:56.4)
XRT distances are from RA=106.7605 (07:07:02.52) DEC= 7.1931 (+07:11:35.3)
-----------------
Entry 13 in the list of sources is a candidate afterglow for 1297832_g325 with genie
ra=106.74272 (07:06:58.25) dec=7.21442 (+07:12:51.9) +/- 0.6" mag=17.93+/-0.15
dist=99.5 REFID=4 major=1.2 minor=0.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 63.7 arc sec from the BAT position.
This source is near the edge of image (0.977)
Found 2 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
106.7435 7.2152 3.8 -1 USNO-B1 14.06 13.41 13.70 *
106.7435 7.2151 3.6 -1 GSC2.3 13.31 14.23 13.60 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 5 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
106.7605 7.1914 6.3 -1 USNO-B1 18.63 17.00 17.73
106.7617 7.1916 7.1 -1 USNO-B1 18.53 17.21 17.80
106.7606 7.1938 2.6 -1 GSC2.3 20.45 99.99 99.99
106.7603 7.1912 6.9 -1 GSC2.3 17.97 18.89 17.59
106.7618 7.1915 7.4 -1 GSC2.3 17.52 19.60 99.99
The closest star is 2.56" away.
List UVOT sources within 10" of the XRT position:
There are 20013.562 counts in the bkg source region of 5539.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 3.613 counts/pixel (5-sig UL in 4" is 19.77 mag) for 1297832_g325
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 20.32, XRT distances < 6.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1297832_764352698_250322d21h39m52s756756usUT_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(106.7266,7.1981,45")
fk5;-circle(106.723361652799,7.20755585292277,6")
fk5;-circle(106.723077353885,7.21075759373907,6")
fk5;-circle(106.732602864406,7.20971750099482,6")
fk5;-circle(106.720175299207,7.19663988889197,6")
fk5;-circle(106.717505054371,7.1964857710494,6")
fk5;-circle(106.73828512218,7.20029375078558,6")
fk5;-circle(106.725028988786,7.19086229768325,6")
fk5;-circle(106.721907033878,7.19096900442636,6")
fk5;-circle(106.71550284959,7.19345667389306,6")
image paragraph message for exposure 2 of trigger 1297832
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB250322 (Swift/BAT trigger 1297832) at 16:06:12 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
290 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 18.0 mag. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.153.
------- notes for trigger 1297832 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250322d21h39m57s743760usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1297832
-expid=764352698 -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/1297832/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 764352698.87734 or about 2025:082:16:11:33 UT
Found 2082 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 21% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 20 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Found 27 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 20.32 mag. Found 211 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
22% of the Genie image region.
Genie image analysis:
Found 20013.6 counts in the large background region of 5539.0 pixels or a rate
of 3.613 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 19.57 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.04 mag. The closest srclist
source has ra= 106.7588 dec= 7.2034 mag=17.45 sep=37.28". The closest Genie
source has ra= 106.7492 dec= 7.1974 mag=17.91 sep=43.23".
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?
764352698 289 U srclist found no candidates.
764352698 289 U image found no candidates.
List afterglow candidates for other finding charts.
764352484 75 WHITE srclist found no candidates.
764352484 75 WHITE image found no candidates.
764353276 867 WHITE srclist found no candidates.
764353276 867 WHITE image found no candidates.
------- Tokens for Quick GCN -------