image overlap message for exposure 3 of trigger 1185673
uvot_overlap.pl vrs. 2010-12-20b fem started at 230817d03h24m47s652418usUT
The observation of trigger 1185673 started 2023-08-16T16:23:41.3
Examining file ./1185673_g892_uvot_sky_image.fits
The exposure ID is 713895821
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (328.3746,37.8350) with a roll angle of 3.1
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 (328.3750,37.8280) with a radius of 3.000 arc min
This is 0.419 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 (328.4457,37.8549) with a radius of 0.038 arc min
This is 3.572 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 3 of trigger 1185673
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230817d03h25m19s029032usUT
Observation start time is 2023-08-16T16:23:41.3
Examining file ./1185673_g892_uvot_catalog_image.fits
The exposure ID is 713895821
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 24 detected source(s) for 1185673_g892
Aspect correction adds 0.00067 degrees (0.162 sec of time = 1.92 arc sec) to RA
Aspect correction adds 0.00076 degrees ( 2.74 arcsec) to Dec
Total aspect correction is 3.34 arcsec
Star catalogs centered at 328.3737 , 37.8324 with radius 2.56 arc min.
n_usno: 206 n_gsc: 149
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 17 matched entries is 0.266" for 1185673_g892
Mean and std. dev of mag. difference (MAG_DELTA) are 1.246 and 0.221 for 1185673_g892
Found 7 entries without IDs and 7 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.
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)
*** WARNING 29 per cent of entries have no IDs.
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1185673_g892 with genie
ra=328.36774 (21:53:28.26) dec=37.83256 (+37:49:57.2) +/- 0.6" mag=18.41+/-0.15
dist=235.8 REFID=14 major=5.0 minor=2.5 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 24.3 arc sec from the BAT position.
Found 16 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
328.3710 37.8365 17.0 -1 USNO-B1 21.28 18.63 19.81
328.3692 37.8361 13.2 -1 USNO-B1 20.89 19.38 20.05
328.3696 37.8278 18.0 -1 USNO-B1 20.29 18.57 19.33
328.3686 37.8279 17.1 -1 USNO-B1 20.15 20.00 20.07
328.3660 37.8323 4.9 -1 USNO-B1 19.50 19.23 19.35
328.3685 37.8371 16.5 -1 USNO-B1 20.86 19.50 20.10
328.3676 37.8369 15.5 -1 USNO-B1 19.64 99.99 99.99
328.3647 37.8330 8.7 -1 USNO-B1 20.01 19.33 19.63
328.3648 37.8364 16.1 -1 USNO-B1 13.24 11.15 12.08 *
328.3637 37.8283 19.4 -1 USNO-B1 20.12 20.36 20.25
328.3696 37.8276 18.5 -1 GSC2.3 18.30 20.12 18.80
328.3687 37.8377 18.8 -1 GSC2.3 99.99 21.45 99.99
328.3671 37.8281 16.0 -1 GSC2.3 20.29 99.99 99.99
328.3666 37.8363 14.0 -1 GSC2.3 99.99 99.99 99.99
328.3648 37.8364 16.1 -1 GSC2.3 99.99 99.99 12.16
328.3636 37.8284 19.0 -1 GSC2.3 20.15 99.99 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
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1185673_g892 with genie
ra=328.37002 (21:53:28.81) dec=37.83586 (+37:50:09.1) +/- 0.6" mag=18.07+/-0.14
dist=225.8 REFID=11 major=6.6 minor=1.8 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 28.5 arc sec from the BAT position.
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
328.3710 37.8365 3.7 -1 USNO-B1 21.28 18.63 19.81
328.3692 37.8361 2.5 -1 USNO-B1 20.89 19.38 20.05 *
328.3660 37.8323 17.0 -1 USNO-B1 19.50 19.23 19.35
328.3685 37.8371 6.2 -1 USNO-B1 20.86 19.50 20.10
328.3676 37.8369 7.8 -1 USNO-B1 19.64 99.99 99.99
328.3647 37.8330 18.1 -1 USNO-B1 20.01 19.33 19.63
328.3648 37.8364 15.0 -1 USNO-B1 13.24 11.15 12.08 *
328.3687 37.8377 7.8 -1 GSC2.3 99.99 21.45 99.99
328.3666 37.8363 9.8 -1 GSC2.3 99.99 99.99 99.99
328.3648 37.8364 15.0 -1 GSC2.3 99.99 99.99 12.16
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1185673_g892 with genie
ra=328.36979 (21:53:28.75) dec=37.83818 (+37:50:17.4) +/- 0.6" mag=18.94+/-0.15
dist=224.0 REFID=8 major=4.1 minor=2.8 flag=1 (neighbor)
*** The position of this source is inconsistent with the XRT position.
The position is 36.2 arc sec from the BAT position.
Found 8 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
328.3710 37.8365 6.9 -1 USNO-B1 21.28 18.63 19.81
328.3692 37.8361 7.9 -1 USNO-B1 20.89 19.38 20.05
328.3685 37.8371 5.2 -1 USNO-B1 20.86 19.50 20.10
328.3676 37.8369 7.9 -1 USNO-B1 19.64 99.99 99.99
328.3648 37.8364 15.6 -1 USNO-B1 13.24 11.15 12.08 *
328.3687 37.8377 3.6 -1 GSC2.3 99.99 21.45 99.99
328.3666 37.8363 11.1 -1 GSC2.3 99.99 99.99 99.99
328.3648 37.8364 15.6 -1 GSC2.3 99.99 99.99 12.16
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1185673_g892 with genie
ra=328.36109 (21:53:26.66) dec=37.83363 (+37:50:01.1) +/- 0.6" mag=17.41+/-0.14
dist=252.4 REFID=12 major=8.3 minor=4.6 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 42.9 arc sec from the BAT position.
Found 12 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
328.3660 37.8323 14.9 -1 USNO-B1 19.50 19.23 19.35
328.3647 37.8330 10.6 -1 USNO-B1 20.01 19.33 19.63
328.3648 37.8364 14.5 -1 USNO-B1 13.24 11.15 12.08 *
328.3601 37.8367 11.3 -1 USNO-B1 20.65 18.85 19.65
328.3595 37.8363 10.6 -1 USNO-B1 99.99 19.64 99.99
328.3584 37.8331 7.8 -1 USNO-B1 17.50 16.83 17.13
328.3571 37.8333 11.3 -1 USNO-B1 20.54 99.99 99.99
328.3558 37.8333 15.1 -1 USNO-B1 99.99 20.00 99.99
328.3666 37.8363 18.5 -1 GSC2.3 99.99 99.99 99.99
328.3648 37.8364 14.4 -1 GSC2.3 99.99 99.99 12.16
328.3585 37.8329 7.8 -1 GSC2.3 16.52 17.57 17.27
328.3557 37.8333 15.5 -1 GSC2.3 19.08 21.55 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
-----------------
Entry 12 in the list of sources is a candidate afterglow for 1185673_g892 with genie
ra=328.36200 (21:53:26.88) dec=37.83985 (+37:50:23.5) +/- 0.7" mag=20.31+/-0.20
dist=244.0 REFID=6 major=3.8 minor=2.3 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 53.8 arc sec from the BAT position.
Found 8 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
328.3676 37.8369 19.2 -1 USNO-B1 19.64 99.99 99.99
328.3648 37.8364 14.8 -1 USNO-B1 13.24 11.15 12.08 *
328.3601 37.8367 12.7 -1 USNO-B1 20.65 18.85 19.65
328.3595 37.8363 14.6 -1 USNO-B1 99.99 19.64 99.99
328.3638 37.8421 9.6 -1 USNO-B1 20.75 99.99 99.99
328.3666 37.8363 18.2 -1 GSC2.3 99.99 99.99 99.99
328.3648 37.8364 14.8 -1 GSC2.3 99.99 99.99 12.16
328.3585 37.8390 10.5 -1 GSC2.3 20.26 99.99 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
-----------------
Entry 13 in the list of sources is a candidate afterglow for 1185673_g892 with genie
ra=328.35901 (21:53:26.16) dec=37.83705 (+37:50:13.4) +/- 0.6" mag=18.31+/-0.15
dist=254.7 REFID=7 major=5.0 minor=3.1 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 53.9 arc sec from the BAT position.
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
328.3648 37.8364 16.6 -1 USNO-B1 13.24 11.15 12.08 *
328.3601 37.8367 3.3 -1 USNO-B1 20.65 18.85 19.65 *
328.3595 37.8363 3.0 -1 USNO-B1 99.99 19.64 99.99 *
328.3584 37.8331 14.4 -1 USNO-B1 17.50 16.83 17.13
328.3571 37.8333 14.6 -1 USNO-B1 20.54 99.99 99.99
328.3558 37.8333 16.3 -1 USNO-B1 99.99 20.00 99.99
328.3648 37.8364 16.6 -1 GSC2.3 99.99 99.99 12.16
328.3585 37.8329 14.9 -1 GSC2.3 16.52 17.57 17.27
328.3585 37.8390 7.1 -1 GSC2.3 20.26 99.99 99.99
328.3557 37.8333 16.7 -1 GSC2.3 19.08 21.55 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
-----------------
Entry 21 in the list of sources is a candidate afterglow for 1185673_g892 with genie
ra=328.38763 (21:53:33.03) dec=37.80883 (+37:48:31.8) +/- 0.6" mag=18.42+/-0.15
dist=234.1 REFID=1 major=1.4 minor=0.3 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 81.0 arc sec from the BAT position.
This source is near the edge of image (1.002)
Found 6 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
328.3878 37.8082 2.2 -1 USNO-B1 17.29 15.27 16.17 *
328.3857 37.8049 15.1 -1 USNO-B1 18.14 18.21 18.18
328.3849 37.8043 18.1 -1 USNO-B1 18.69 17.63 18.10
328.3880 37.8081 2.8 -1 GSC2.3 14.97 16.11 15.96 *
328.3873 37.8076 4.4 -1 GSC2.3 99.99 99.99 99.99 *
328.3854 37.8042 18.0 -1 GSC2.3 18.17 19.41 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 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 42115.492 counts in the bkg source region of 5286.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 7.967 counts/pixel (5-sig UL in 4" is 20.22 mag) for 1185673_g892
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 20.78, 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: 1185673_713895821_230817d03h25m19s029032usUT_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(328.3746,37.8350,45")
fk5;-circle(328.377135727829,37.8278604457206,6")
fk5;-circle(328.374762961293,37.8235017263665,6")
fk5;-circle(328.367742655286,37.832564587968,6")
fk5;-circle(328.370020867019,37.8358595618703,6")
fk5;-circle(328.369786473634,37.8381756459959,6")
fk5;-circle(328.364793656789,37.8363986939916,6")
fk5;-circle(328.387985693037,37.8338918042262,6")
fk5;-circle(328.361085800878,37.8336330835923,6")
fk5;-circle(328.358568147599,37.8331182998047,6")
fk5;-circle(328.361995375013,37.8398540574893,6")
fk5;-circle(328.359008710635,37.8370520131522,6")
image 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 230817d03h25m22s867261usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1185673
-expid=713895821 -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/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 -------