srclist overlap message for exposure 2 of trigger 1104692
uvot_overlap.pl vrs. 2010-12-20b fem started at 220430d18h39m59s485752usUT
The observation of trigger 1104692 started 2022-04-30T13:58:17.5
Examining file ./1104692_g301_uvot_sky_srclist.fits
The exposure ID is 673019897
The exposure time is undefined.
The filter is U.
The uvot region is centered at (97.6081,9.5458) with a roll angle of 281.7
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 (97.6110,9.5100) with a radius of 3.000 arc min
This is 2.155 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 25.98 sq. arc min or 0.92 of the BAT error circle
The XRT error circle is centered at (97.6122,9.5475) with a radius of 0.033 arc min
This is 0.261 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1104692
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220430d18h40m17s408059usUT
Observation start time is 2022-04-30T13:58:17.5
Examining file ./1104692_g301_uvot_catalog_srclist.fits
The exposure ID is 673019897
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 93 detected source(s) for 1104692_g301
Aspect correction adds -0.00106 degrees (-0.255 sec of time = -3.78 arc sec) to RA
Aspect correction adds -0.00076 degrees (-2.73 arcsec) to Dec
Total aspect correction is 4.66 arcsec
Star catalogs centered at 97.6178 , 9.5449 with radius 5.86 arc min.
n_usno: 1145 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.95464
RA DEC Mag Color
bright star 0: 97.61172 (06:30:26.81) 9.57456 (+09:34:28.4) 11.95 USNO-V
Mean distance difference (CAT_DELTA) for 77 matched entries is 0.810" for 1104692_g301
Mean and std. dev of mag. difference (MAG_DELTA) are 2.241 and 0.585 for 1104692_g301
Found 18 entries without IDs and 7 entries that are acceptable afterglow candidates for 1104692_g301.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
6 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=97.6110 (06:30:26.64) DEC= 9.5100 (+09:30:36.0)
XRT distances are from RA=97.6122 (06:30:26.92) DEC= 9.5475 (+09:32:51.1)
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1104692_g301 with 3x3 stamp
ra=97.61877 (06:30:28.50) dec=9.56101 (+09:33:39.6) +/- 1.1" mag=18.67+/-0.35
dist=53.9 REFID=77
*** The position of this source is inconsistent with the XRT position.
The position is 185.7 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 0 0 0 0 0
Found 5 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
97.6183 9.5607 2.0 -1 USNO-B1 16.17 14.56 15.28 *
97.6238 9.5596 18.5 -1 USNO-B1 17.43 16.23 16.76
97.6133 9.5608 19.5 -1 USNO-B1 16.01 15.11 15.51
97.6227 9.5618 14.2 -1 USNO-B1 20.14 18.66 19.32
97.6190 9.5650 14.5 -1 USNO-B1 18.73 17.43 18.01
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 12 in the list of sources is a candidate afterglow for 1104692_g301 with 3x3 stamp
ra=97.59615 (06:30:23.08) dec=9.52943 (+09:31:45.9) +/- 1.1" mag=18.12+/-0.35
dist=86.5 REFID=50
*** The position of this source is inconsistent with the XRT position.
The position is 87.6 arc sec from the BAT position.
src: 12 distr. of nearby unmatched sources: 0 0 0 0 0
Found 5 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
97.5998 9.5300 13.2 -1 USNO-B1 19.59 18.20 18.82
97.5986 9.5297 8.7 -1 USNO-B1 17.39 15.36 16.26
97.5958 9.5300 2.6 -1 USNO-B1 15.60 14.41 14.94 *
97.5929 9.5285 12.2 -1 USNO-B1 16.18 15.20 15.63
97.5913 9.5291 17.5 -1 USNO-B1 17.98 16.95 17.41
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 26 in the list of sources is a candidate afterglow for 1104692_g301 with 3x3 stamp
ra=97.62110 (06:30:29.06) dec=9.51418 (+09:30:51.1) +/- 1.1" mag=18.64+/-0.35
dist=124.2 REFID=79
*** The position of this source is inconsistent with the XRT position.
The position is 38.9 arc sec from the BAT position.
src: 26 distr. of nearby unmatched sources: 0 1 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
97.6236 9.5145 9.1 -1 USNO-B1 20.92 18.98 19.84
97.6206 9.5134 3.1 -1 USNO-B1 14.50 13.88 14.15 *
97.6203 9.5132 4.5 -1 USNO-B1 14.20 13.48 13.80
97.6191 9.5126 9.0 -1 USNO-B1 15.39 14.84 15.08
97.6177 9.5125 13.4 -1 USNO-B1 18.26 16.26 17.15
97.6227 9.5108 13.4 -1 USNO-B1 17.15 16.11 16.57
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 35 in the list of sources is a candidate afterglow for 1104692_g301 with 3x3 stamp
ra=97.64812 (06:30:35.55) dec=9.52850 (+09:31:42.6) +/- 1.1" mag=18.16+/-0.35
dist=144.9 REFID=38
*** The position of this source is inconsistent with the XRT position.
The position is 147.7 arc sec from the BAT position.
src: 35 distr. of nearby unmatched sources: 1 0 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
97.6441 9.5310 17.0 -1 USNO-B1 20.38 18.95 19.59
97.6478 9.5291 2.4 -1 USNO-B1 15.66 14.72 15.14 *
97.6526 9.5267 17.2 -1 USNO-B1 17.29 16.42 16.81
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 38 in the list of sources is a candidate afterglow for 1104692_g301 with 3x3 stamp
ra=97.65178 (06:30:36.43) dec=9.53391 (+09:32:02.1) +/- 1.1" mag=18.26+/-0.35
dist=148.9 REFID=54
*** The position of this source is inconsistent with the XRT position.
The position is 168.4 arc sec from the BAT position.
src: 38 distr. of nearby unmatched sources: 0 0 0 0 2
Found 5 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
97.6510 9.5351 5.2 -1 USNO-B1 99.99 18.43 99.99
97.6511 9.5347 3.7 -1 USNO-B1 19.08 18.10 18.54 *
97.6523 9.5332 3.1 -1 USNO-B1 13.79 12.46 13.05 *
97.6548 9.5326 11.9 -1 USNO-B1 16.37 15.34 15.80
97.6550 9.5326 12.5 -1 USNO-B1 99.99 15.85 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 77 in the list of sources is a candidate afterglow for 1104692_g301 with 3x3 stamp
ra=97.56029 (06:30:14.47) dec=9.51028 (+09:30:37.0) +/- 1.1" mag=19.06+/-0.35
dist=227.8 REFID=92
*** The position of this source is inconsistent with the XRT position.
The position is 180.1 arc sec from the BAT position.
src: 77 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
97.5600 9.5153 18.1 -1 USNO-B1 19.11 17.30 18.11
97.5600 9.5096 2.5 -1 USNO-B1 16.26 15.54 15.86 *
97.5578 9.5069 14.8 -1 USNO-B1 19.23 17.84 18.46
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 92 in the list of sources is a candidate afterglow for 1104692_g301 with 3x3 stamp
ra=97.61901 (06:30:28.56) dec=9.47148 (+09:28:17.3) +/- 1.1" mag=18.71+/-0.35
dist=274.8 REFID=87
*** The position of this source is inconsistent with the XRT position.
The position is 141.5 arc sec from the BAT position.
src: 92 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
97.6193 9.4720 2.1 -1 USNO-B1 17.05 16.10 16.52 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 3 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
97.6139 9.5465 7.1 -1 USNO-B1 20.71 19.07 19.80
97.6137 9.5484 6.4 -1 USNO-B1 20.77 19.38 19.99
97.6102 9.5486 7.9 -1 USNO-B1 19.57 19.85 19.73
The closest star is 6.38" away.
List UVOT sources within 10" of the XRT position:
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 18.12, XRT distances < 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 2 of trigger 1104692
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB220430 (Swift/BAT trigger 1104692) at 13:53:15 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
272 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 100% of the
XRT error circle. The typical 3-sigma upper limit has been about 19.2 mag. 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 large, but uncertain, extinction expected.
------- notes for trigger 1104692 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220430d18h40m21s607535usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1104692
-expid=673019897 -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/1104692/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
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 673019897.4528 or about 2022:120:13:58:12 UT
Found 1141 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 23% of the srclist region. Found 93 sources in
srclist catalog. Found 18 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 21 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 20.08 mag. Found 223 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 32753.8 counts in the large background region of 5841.0 pixels or a rate
of 5.608 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 19.36 mag. for a
4-arcsec aperture.
Found 1122.1 counts in the XRT position region of 196.0 pixels or a rate of
5.725 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.123 +/- 0.145 (1-sigma) cps or
20.45 mag and a range from 19.61 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.557 cps or 18.81 mag. The closest srclist source has ra= 97.6149
dec= 9.5517 mag=16.60 sep=17.96". The closest Genie source has ra= 97.6149
dec= 9.5517 mag=16.04 sep=17.95".
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?
673019897 271 U srclist found no candidates.
673019897 271 U image found no candidates.
List afterglow candidates for other finding charts.
673019685 59 WHITE srclist found no candidates.
673019685 59 WHITE image found no candidates.
673020500 874 WHITE srclist found no candidates.
673020500 874 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 9.54753
GRB_ERROR: 5
GRB_RA: 97.61217
IMAGE_START_TIME: 13:58:12
MAGNITUDE: 18.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT