srclist overlap message for exposure 1 of trigger 1152509
uvot_overlap.pl vrs. 2010-12-20b fem started at 230204d07h40m44s596623usUT
The observation of trigger 1152509 started 2023-02-04T03:00:04.1
Examining file ./1152509_g186_uvot_sky_srclist.fits
The exposure ID is 697172404
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (238.1767,-50.8587) with a roll angle of 92.3
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (238.1640,-50.8580) with a radius of 3.000 arc min
This is 0.482 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 (238.1996,-50.9165) with a radius of 0.037 arc min
This is 3.575 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1152509
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230204d07h40m46s509701usUT
Observation start time is 2023-02-04T03:00:04.1
Examining file ./1152509_g186_uvot_catalog_srclist.fits
The exposure ID is 697172404
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1152509_g186
*** 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 1152509_g186 has mag 18.98
Aspect correction adds 0.00120 degrees (0.288 sec of time = 2.73 arc sec) to RA
Aspect correction adds -0.00020 degrees (-0.73 arcsec) to Dec
Total aspect correction is 2.82 arcsec
Star catalogs centered at 238.1719 , -50.8673 with radius 6.97 arc min.
n_usno: 2449 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 9.40998
RA DEC Mag Color
bright star 0: 238.21194 (15:52:50.87) -50.87175 (-50:52:18.3) 9.41 USNO-V
bright star 1: 238.13850 (15:52:33.24) -50.76536 (-50:45:55.3) 10.67 USNO-V
bright star 2: 238.30365 (15:53:12.88) -50.93079 (-50:55:50.8) 10.44 USNO-V
bright star 3: 238.06092 (15:52:14.62) -50.95109 (-50:57:03.9) 11.23 USNO-V
bright star 4: 238.20969 (15:52:50.33) -50.75768 (-50:45:27.6) 11.19 USNO-V
bright star 5: 238.29808 (15:53:11.54) -50.94785 (-50:56:52.3) 11.05 USNO-V
Mean distance difference (CAT_DELTA) for 140 matched entries is 0.786" for 1152509_g186
Mean and std. dev of mag. difference (MAG_DELTA) are 1.950 and 0.765 for 1152509_g186
Found 56 entries without IDs and 9 entries that are acceptable afterglow candidates for 1152509_g186.
Acceptable entries have no ID, XRT distances < 5.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
39 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=238.1640 (15:52:39.36) DEC=-50.8580 (-50:51:28.8)
XRT distances are from RA=238.1996 (15:52:47.91) DEC=-50.9165 (-50:54:59.5)
*** WARNING 29 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1152509_g186 with 3x3 stamp
ra=238.19917 (15:52:47.80) dec=-50.91616 (-50:54:58.2) +/- 1.1" mag=18.26+/-0.35
dist=1.7 REFID=95
src: 0 distr. of nearby unmatched sources: 1 1 0 0 1
Found 4 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
238.1947 -50.9149 11.2 -1 USNO-B1 19.08 16.71 17.77
238.1906 -50.9160 19.5 -1 USNO-B1 99.99 18.84 99.99
238.2001 -50.9153 3.8 -1 USNO-B1 15.42 12.96 14.05 *
238.2031 -50.9179 11.0 -1 USNO-B1 20.43 18.18 19.18
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1152509_g186 with 1x1 stamp
ra=238.19953 (15:52:47.89) dec=-50.91580 (-50:54:56.9) +/- 1.1" mag=18.15+/-0.35
dist=2.6 REFID=147
src: 1 distr. of nearby unmatched sources: 1 1 0 0 1
Found 3 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
238.1947 -50.9149 11.5 -1 USNO-B1 19.08 16.71 17.77
238.2001 -50.9153 2.2 -1 USNO-B1 15.42 12.96 14.05 *
238.2031 -50.9179 11.2 -1 USNO-B1 20.43 18.18 19.18
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 20 in the list of sources is a candidate afterglow for 1152509_g186 with 3x3 stamp
ra=238.20606 (15:52:49.46) dec=-50.89488 (-50:53:41.6) +/- 1.1" mag=18.57+/-0.35
dist=79.3 REFID=82
*** The position of this source is inconsistent with the XRT position.
The position is 163.6 arc sec from the BAT position.
src: 20 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
238.2039 -50.8925 9.7 -1 USNO-B1 19.87 16.70 18.10
238.2041 -50.8927 8.9 -1 USNO-B1 99.99 16.96 99.99
238.2070 -50.8946 2.3 -1 USNO-B1 16.95 14.09 15.36 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 36 in the list of sources is a candidate afterglow for 1152509_g186 with 3x3 stamp
ra=238.18155 (15:52:43.57) dec=-50.87851 (-50:52:42.6) +/- 1.1" mag=18.32+/-0.35
dist=142.9 REFID=75
*** The position of this source is inconsistent with the XRT position.
The position is 83.9 arc sec from the BAT position.
src: 36 srclist_match has ID
src: 36 distr. of nearby unmatched sources: 0 0 0 0 0
Found 11 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
238.1750 -50.8757 18.1 -1 USNO-B1 99.99 18.30 99.99
238.1756 -50.8757 16.9 -1 USNO-B1 99.99 17.66 99.99
238.1734 -50.8776 18.8 -1 USNO-B1 21.74 17.34 19.29
238.1828 -50.8776 4.5 -1 USNO-B1 99.99 15.41 99.99
238.1840 -50.8771 7.6 -1 USNO-B1 18.89 15.59 17.06
238.1789 -50.8790 6.2 -1 USNO-B1 21.55 18.98 20.12
238.1820 -50.8781 1.6 -1 USNO-B1 17.42 15.05 16.11 *
238.1861 -50.8765 12.7 -1 USNO-B1 99.99 18.28 99.99
238.1830 -50.8789 3.6 -1 USNO-B1 22.07 15.55 18.44 *
238.1873 -50.8780 13.3 -1 USNO-B1 21.31 18.30 19.64
238.1884 -50.8775 16.0 -1 USNO-B1 99.99 17.97 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 69 in the list of sources is a candidate afterglow for 1152509_g186 with 1x1 stamp
ra=238.14616 (15:52:35.08) dec=-50.88176 (-50:52:54.3) +/- 1.1" mag=18.70+/-0.35
dist=174.4 REFID=109
*** The position of this source is inconsistent with the XRT position.
The position is 94.7 arc sec from the BAT position.
src: 69 distr. of nearby unmatched sources: 0 0 0 0 0
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
238.1450 -50.8788 11.0 -1 USNO-B1 22.07 18.68 20.19
238.1463 -50.8812 2.1 -1 USNO-B1 16.80 14.87 15.73 *
238.1442 -50.8798 8.4 -1 USNO-B1 18.83 15.96 17.23
238.1437 -50.8797 9.3 -1 USNO-B1 19.65 16.19 17.73
238.1392 -50.8829 16.3 -1 USNO-B1 99.99 18.78 99.99
238.1413 -50.8846 15.0 -1 USNO-B1 20.05 17.50 18.63
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 70 in the list of sources is a candidate afterglow for 1152509_g186 with 1x1 stamp
ra=238.15910 (15:52:38.18) dec=-50.87594 (-50:52:33.4) +/- 1.1" mag=18.93+/-0.35
dist=172.7 REFID=159
*** The position of this source is inconsistent with the XRT position.
The position is 65.5 arc sec from the BAT position.
src: 70 srclist_match has ID
src: 70 distr. of nearby unmatched sources: 0 0 0 0 0
Found 7 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
238.1610 -50.8713 17.1 -1 USNO-B1 99.99 18.99 99.99
238.1616 -50.8750 6.7 -1 USNO-B1 20.51 16.02 18.01
238.1630 -50.8760 8.8 -1 USNO-B1 17.52 15.68 16.49
238.1599 -50.8758 1.8 -1 USNO-B1 18.13 16.17 17.04 *
238.1610 -50.8772 6.3 -1 USNO-B1 22.07 17.58 19.57
238.1575 -50.8754 4.1 -1 USNO-B1 99.99 17.58 99.99
238.1561 -50.8806 18.0 -1 USNO-B1 20.11 17.90 18.88
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 98 in the list of sources is a candidate afterglow for 1152509_g186 with 1x1 stamp
ra=238.21352 (15:52:51.25) dec=-50.85432 (-50:51:15.6) +/- 1.1" mag=18.83+/-0.35
dist=226.2 REFID=161
*** The position of this source is inconsistent with the XRT position.
The position is 113.3 arc sec from the BAT position.
src: 98 srclist_match has ID
src: 98 distr. of nearby unmatched sources: 0 0 0 0 0
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
238.2081 -50.8585 19.5 -1 USNO-B1 99.99 16.18 99.99
238.2107 -50.8551 6.9 -1 USNO-B1 22.07 17.44 19.50
238.2110 -50.8553 6.6 -1 USNO-B1 20.65 18.27 19.33
238.2132 -50.8546 1.1 -1 USNO-B1 17.94 16.42 17.09 *
238.2161 -50.8518 10.8 -1 USNO-B1 99.99 16.43 99.99
238.2162 -50.8513 12.2 -1 USNO-B1 20.47 16.32 18.16
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 113 in the list of sources is a candidate afterglow for 1152509_g186 with 3x3 stamp
ra=238.20891 (15:52:50.14) dec=-50.83971 (-50:50:23.0) +/- 1.1" mag=15.77+/-0.35
dist=277.4 REFID=10
*** The position of this source is inconsistent with the XRT position.
The position is 121.5 arc sec from the BAT position.
src: 113 distr. of nearby unmatched sources: 0 0 0 0 0
Found 7 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
238.2105 -50.8442 16.4 -1 USNO-B1 20.84 17.31 18.88
238.2109 -50.8439 15.8 -1 USNO-B1 99.99 17.93 99.99
238.2026 -50.8393 14.3 -1 USNO-B1 21.06 18.45 19.61
238.2038 -50.8363 17.0 -1 USNO-B1 99.99 18.20 99.99
238.2099 -50.8391 3.1 -1 USNO-B1 99.99 12.57 99.99 *
238.2134 -50.8380 12.1 -1 USNO-B1 16.89 14.27 15.43
238.2159 -50.8369 18.9 -1 USNO-B1 14.53 18.35 16.65
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 141 in the list of sources is a candidate afterglow for 1152509_g186 with 3x3 stamp
ra=238.20116 (15:52:48.28) dec=-50.82411 (-50:49:26.8) +/- 1.1" mag=17.40+/-0.35
dist=332.7 REFID=38
*** The position of this source is inconsistent with the XRT position.
The position is 148.4 arc sec from the BAT position.
src: 141 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
238.1973 -50.8277 15.7 -1 USNO-B1 21.95 17.54 19.50
238.1968 -50.8234 10.1 -1 USNO-B1 22.07 99.99 99.99
238.2016 -50.8236 2.0 -1 USNO-B1 16.24 14.21 15.11 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 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
238.2001 -50.9153 4.5 -1 USNO-B1 15.42 12.96 14.05
238.2031 -50.9179 9.4 -1 USNO-B1 20.43 18.18 19.18
The closest star is 4.54" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=238.19917 (15:52:47.80) dec=-50.91616 (-50:54:58.2) +/- 1.1" mag=18.26+/-0.35 dist=1.7 REFID=95
Unmatched source ra=238.19953 (15:52:47.89) dec=-50.91580 (-50:54:56.9) +/- 1.1" mag=18.15+/-0.35 dist=2.6 REFID=147
Unmatched source ra=238.20175 (15:52:48.42) dec=-50.91483 (-50:54:53.4) +/- 1.1" mag=18.15+/-0.35 dist=7.8 REFID=78
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 < 5.5",
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 1 of trigger 1152509
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 GRB230204 (Swift/BAT trigger 1152509) at 02:56:57 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 156 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 1152509 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230204d07h40m50s838337usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1152509
-expid=697172404 -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/1152509/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Large extinction of 8.180 found for bat position. Unreliable extinction found
for xrt position. 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 697172404.05598 or about 2023:035:02:59:59 UT
Found 2445 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 34% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 56 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 12 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 20.17 mag. Found 321 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
34% of the Genie image region. The Genie image is INCOMPLETE with 16268 null
pixels.
Genie image analysis:
Found 28848.6 counts in the large background region of 1193.0 pixels or a rate
of 24.182 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 19.45 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.98 mag.
Found 3 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 238.1992 dec= -50.9162 mag=18.26 sep=1.67".
The closest srclist source has ra= 238.1992 dec= -50.9162 mag=18.26 sep=1.67".
The closest Genie source has ra= 238.2031 dec= -50.9087 mag=20.20 sep=29.09".
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 156 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 15:52:47.80 = 238.19917
DEC(J2000) = -50:54:58.2 = -50.91616
with a 90%-confidence error radius of about 1.10 arc sec. This position is 1.67
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.26 with a 1-sigma error of about 0.35. No correction has been made for the
large, but uncertain, extinction expected.
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?
697172404 156 WHITE srclist found no candidates.
697172404 156 WHITE image found no candidates.
List afterglow candidates for other finding charts.
697172562 314 U srclist found no candidates.
697172562 314 U image found no candidates.
------- Tokens for Quick GCN -------