srclist overlap message for exposure 3 of trigger 1185673
uvot_overlap.pl vrs. 2010-12-20b fem started at 230817d03h24m41s759584usUT
The observation of trigger 1185673 started 2023-08-16T16:23:41.3
Examining file ./1185673_g892_uvot_sky_srclist.fits
The exposure ID is 713895821
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (328.3765,37.8353) with a roll angle of 3.1
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (328.3750,37.8280) with a radius of 3.000 arc min
This is 0.446 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
The XRT error circle is centered at (328.4457,37.8549) with a radius of 0.038 arc min
This is 3.482 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 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 3 of trigger 1185673
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230817d03h25m16s118118usUT
Observation start time is 2023-08-16T16:23:41.3
Examining file ./1185673_g892_uvot_catalog_srclist.fits
The exposure ID is 713895821
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1185673_g892
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1185673_g892 has mag 19.28
Aspect correction adds 0.00068 degrees (0.164 sec of time = 1.94 arc sec) to RA
Aspect correction adds 0.00085 degrees ( 3.05 arcsec) to Dec
Total aspect correction is 3.62 arcsec
Star catalogs centered at 328.3725 , 37.8455 with radius 8.71 arc min.
n_usno: 2477 n_gsc: 2072
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 9.55712
RA DEC Mag Color
bright star 0: 328.35963 (21:53:26.31) 37.72946 (+37:43:46.0) 11.97 USNO-V
bright star 1: 328.41821 (21:53:40.37) 37.95924 (+37:57:33.3) 9.56 GSC-F
bright star 2: 328.46117 (21:53:50.68) 37.96897 (+37:58:08.3) 11.58 USNO-V
Mean distance difference (CAT_DELTA) for 192 matched entries is 0.781" for 1185673_g892
Mean and std. dev of mag. difference (MAG_DELTA) are 2.140 and 0.653 for 1185673_g892
Found 3 entries without IDs and 0 entries that are acceptable afterglow candidates for 1185673_g892.
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=328.3750 (21:53:30.00) DEC=37.8280 (+37:49:40.8)
XRT distances are from RA=328.4457 (21:53:46.96) DEC=37.8549 (+37:51:17.8)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 146:
ra=328.49183 dec= 37.79282 +/- 1.1" mag=18.26+/-0.35 dist=259.3 REFID=127
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
328.4444 37.8563 6.1 -1 USNO-B1 19.38 17.49 18.33
328.4475 37.8572 9.6 -1 USNO-B1 15.99 14.94 15.41
328.4444 37.8561 5.6 -1 GSC2.3 17.58 19.73 18.34
328.4475 37.8570 9.1 -1 GSC2.3 14.71 16.21 15.41
The closest star is 5.63" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=328.44720 (21:53:47.33) dec=37.85734 (+37:51:26.4) +/- 1.1" mag=17.57+/-0.35 dist=9.7 REFID=50
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 19.22, XRT distances < 5.75",
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 3 of trigger 1185673
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 GRB230816 (Swift/BAT trigger 1185673) at 16:08:48 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 861 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 expected
extinction corresponding to E(B-V) of 0.312.
------- notes for trigger 1185673 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230817d03h25m20s361168usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1185673
-expid=713895821 -meonly -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/1185673/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 713895821.33708 or about 2023:228:16:23:36 UT
Found 2473 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 22% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 3 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 24 source(s) in Genie image catalog. Found 7 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.78 mag. Found 202 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
21% of the Genie image region. The XRT position was OUTSIDE the star catalog
search region.
Genie image analysis:
Found 42115.5 counts in the large background region of 5286.0 pixels or a rate
of 7.967 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 20.05 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 19.28 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 328.4472 dec= 37.8573 mag=17.57 sep=9.68".
The closest srclist source has ra= 328.4472 dec= 37.8573 mag=17.57 sep=9.68".
The closest Genie source has ra= 328.3957 dec= 37.8400 mag=18.02 sep=151.92".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 861 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 21:53:47.33 = 328.44720
DEC(J2000) = +37:51:26.4 = 37.85734
with a 90%-confidence error radius of about 1.10 arc sec. This position is 9.68
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.57 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.312.
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?
713895821 860 WHITE srclist found no candidates.
713895821 860 WHITE image found no candidates.
List afterglow candidates for other finding charts.
713895053 92 WHITE srclist found no candidates.
713895053 92 WHITE image found no candidates.
713895266 305 U srclist found no candidates.
713895266 305 U image found no candidates.
713899737 4776 U srclist found no candidates.
713899737 4776 U image found no candidates.
713899992 5031 B srclist found no candidates.
713899992 5031 B image found no candidates.
713900561 5600 B srclist found no candidates.
713900561 5600 B image found no candidates.
713900873 5912 U srclist found no candidates.
713900873 5912 U image found no candidates.
713901129 6168 B srclist found no candidates.
713901129 6168 B image found no candidates.
713905487 10526 ? srclist data are not available.
713905487 10526 U image found no candidates.
713905742 10781 ? srclist data are not available.
713905742 10781 B image found no candidates.
------- Tokens for Quick GCN -------