image overlap message for exposure 1 of trigger 1242223
uvot_overlap.pl vrs. 2010-12-20b fem started at 250910d12h17m26s199587usUT
The observation of trigger 1242223 started 2024-07-12T03:30:07.2
Examining file 1242223_g174_uvot_sky_image.fits
The exposure ID is 742447807
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (122.3677,-37.0698) with a roll angle of 348.8
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 (122.3846,-37.0934) with a radius of 2.700 arc min
This is 1.634 arc min from the center of the uvot region
The area of the BAT error circle is 22.90 sq. arc min
The UVOT/BAT overlap is 6.40 sq. arc min or 0.28 of the BAT error circle
The XRT error circle is centered at (122.3359,-37.0881) with a radius of 0.053 arc min
This is 1.877 arc min from the center of the uvot region
The area of the XRT error circle is 0.009 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 1242223
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250910d12h17m28s690030usUT
Observation start time is 2024-07-12T03:30:07.2
Examining file 1242223_g174_uvot_catalog_image.fits
The exposure ID is 742447807
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 38 detected source(s) for 1242223_g174
Aspect correction adds 0.00032 degrees (0.078 sec of time = 0.93 arc sec) to RA
Aspect correction adds 0.00068 degrees ( 2.45 arcsec) to Dec
Total aspect correction is 2.62 arcsec
Star catalogs centered at 122.3669 , -37.0693 with radius 2.77 arc min.
n_usno: 399 n_gsc: 436
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.5227
RA DEC Mag Color
bright star 0: 122.34097 (08:09:21.83) -37.04866 (-37:02:55.2) 11.52 GSC-F
Mean distance difference (CAT_DELTA) for 38 matched entries is 0.486" for 1242223_g174
Mean and std. dev of mag. difference (MAG_DELTA) are 1.401 and 0.462 for 1242223_g174
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1242223_g174.
Acceptable entries have no ID, XRT distances < 8", 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=122.3846 (08:09:32.30) DEC=-37.0934 (-37:05:36.3)
XRT distances are from RA=122.3359 (08:09:20.62) DEC=-37.0881 (-37:05:17.3)
-----------------
Entry 22 in the list of sources is a candidate afterglow for 1242223_g174 with genie
ra=122.38553 (08:09:32.53) dec=-37.09481 (-37:05:41.3) +/- 0.6" mag=18.10+/-0.15
dist=144.5 REFID=1 major=1.3 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 79.8 arc sec from the BAT position.
This source is near the edge of image (0.945)
Found 15 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
122.3842 -37.0914 12.8 -1 USNO-B1 18.20 16.71 17.37
122.3852 -37.0935 4.6 -1 USNO-B1 17.37 15.89 16.55 *
122.3854 -37.0942 2.1 -1 USNO-B1 99.99 15.51 99.99 *
122.3793 -37.0968 19.2 -1 USNO-B1 20.72 18.94 19.73
122.3855 -37.0946 0.7 -1 USNO-B1 99.99 15.64 99.99 *
122.3888 -37.0973 12.9 -1 USNO-B1 21.30 19.44 20.27
122.3801 -37.0919 18.9 -1 GSC2.3 19.59 22.48 99.99
122.3840 -37.0914 13.2 -1 GSC2.3 16.98 18.27 99.99
122.3821 -37.0950 10.0 -1 GSC2.3 19.64 22.25 99.99
122.3853 -37.0937 4.2 -1 GSC2.3 99.99 99.99 99.99 *
122.3853 -37.0942 2.3 -1 GSC2.3 15.87 19.10 99.99 *
122.3792 -37.0967 19.5 -1 GSC2.3 18.75 21.07 99.99
122.3854 -37.0949 0.5 -1 GSC2.3 17.13 18.06 99.99 *
122.3887 -37.0973 12.7 -1 GSC2.3 19.12 21.60 99.99
122.3864 -37.0985 13.4 -1 GSC2.3 19.80 22.06 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 32 in the list of sources is a candidate afterglow for 1242223_g174 with genie
ra=122.33629 (08:09:20.71) dec=-37.08405 (-37:05:02.6) +/- 0.6" mag=18.66+/-0.15
dist=14.8 REFID=34 major=0.5 minor=0.3 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 97.3 arc sec from the BAT position.
This source is near the edge of image (0.941)
Found 10 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
122.3413 -37.0814 17.2 -1 USNO-B1 20.28 19.25 19.70
122.3422 -37.0832 17.4 -1 USNO-B1 20.88 19.75 20.25
122.3351 -37.0787 19.5 -1 USNO-B1 17.31 16.26 16.73
122.3360 -37.0846 2.2 -1 USNO-B1 15.03 14.10 14.51 *
122.3411 -37.0814 16.7 -1 GSC2.3 18.99 20.65 99.99
122.3423 -37.0830 17.6 -1 GSC2.3 19.04 21.11 99.99
122.3380 -37.0800 15.5 -1 GSC2.3 19.73 22.28 99.99
122.3348 -37.0787 19.7 -1 GSC2.3 16.54 17.42 99.99
122.3359 -37.0846 2.5 -1 GSC2.3 14.13 15.09 99.99 *
122.3389 -37.0891 19.5 -1 GSC2.3 19.96 99.99 99.99
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 4 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
122.3359 -37.0900 6.8 -1 USNO-B1 99.99 17.77 99.99
122.3356 -37.0909 9.9 -1 USNO-B1 16.54 15.20 15.79
122.3389 -37.0891 9.1 -1 GSC2.3 19.96 99.99 99.99
122.3359 -37.0897 5.5 -1 GSC2.3 99.99 99.99 99.99
The closest star is 5.48" away.
List UVOT sources within 10" of the XRT position:
There are 1.2754134E+05 counts in the bkg source region of 5435.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 23.467 counts/pixel (5-sig UL in 4" is 19.64 mag) for 1242223_g174
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 20.19, XRT distances < 8",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1242223_742447807_250910d12h17m28s690030usUT_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(122.3677,-37.0698,45")
fk5;-circle(122.373264086812,-37.077994604987,6")
fk5;-circle(122.361596049197,-37.0758500668857,6")
fk5;-circle(122.366402143695,-37.0829181958356,6")
fk5;-circle(122.372681628863,-37.0832973728977,6")
fk5;-circle(122.372408112436,-37.0694904385283,6")
fk5;-circle(122.379180790229,-37.0758562730273,6")
fk5;-circle(122.381247215731,-37.0784723478736,6")
fk5;-circle(122.353984375112,-37.0740504799371,6")
fk5;-circle(122.362439285856,-37.06499000893,6")
fk5;-circle(122.367043245215,-37.0623810019471,6")
fk5;-circle(122.354992486422,-37.0639994162148,6")
image paragraph message for exposure 1 of trigger 1242223
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.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB240712 (Swift/BAT trigger 1242223) at 03:27:12 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 140 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 1242223 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250910d12h17m30s042528usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1242223
-expid=742447807 -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/1242223/
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. 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 742447807.22294 or about 2024:194:03:30:02 UT
Found 2430 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 9 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 38 source(s) in Genie image catalog. Found 2 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.19 mag. Found 436 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
39% of the Genie image region.
Genie image analysis:
Found 127541.3 counts in the large background region of 5435.0 pixels or a rate
of 23.467 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 19.46 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.66 mag. The closest srclist
source has ra= 122.3355 dec= -37.0909 mag=18.38 sep=10.17". The closest Genie
source has ra= 122.3363 dec= -37.0840 mag=18.66 sep=14.78".
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?
742447807 140 WHITE srclist found no candidates.
742447807 140 WHITE image found no candidates.
List afterglow candidates for other finding charts.
742447965 298 U srclist found no candidates.
742447965 298 U image found no candidates.
742448544 877 WHITE srclist found no candidates.
742448544 877 WHITE image found no candidates.
------- Tokens for Quick GCN -------