srclist overlap message for exposure 2 of trigger 1131397
uvot_overlap.pl vrs. 2010-12-20b fem started at 221027d23h19m13s979915usUT
The observation of trigger 1131397 started 2022-10-27T19:19:52.2
Examining file ./1131397_g373_uvot_sky_srclist.fits
The exposure ID is 688591192
The exposure time is undefined.
The filter is U.
The uvot region is centered at (225.6036,47.4430) with a roll angle of 195.0
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 (225.6030,47.4480) with a radius of 3.000 arc min
This is 0.302 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 (225.6210,47.4421) with a radius of 0.037 arc min
This is 0.709 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 2 of trigger 1131397
find_uvot_ag.pl vrs. 2020-10-30 fem started at 221027d23h19m24s119481usUT
Observation start time is 2022-10-27T19:19:52.2
Examining file ./1131397_g373_uvot_catalog_srclist.fits
The exposure ID is 688591192
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 59 detected source(s) for 1131397_g373
Aspect correction adds 0.00022 degrees (0.054 sec of time = 0.55 arc sec) to RA
Aspect correction adds -0.00137 degrees (-4.92 arcsec) to Dec
Total aspect correction is 4.95 arcsec
Star catalogs centered at 225.6014 , 47.4710 with radius 7.98 arc min.
n_usno: 640 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.93886
RA DEC Mag Color
bright star 0: 225.54531 (15:02:10.87) 47.49833 (+47:29:54.0) 10.94 USNO-V
bright star 1: 225.61052 (15:02:26.52) 47.51909 (+47:31:08.7) 11.52 USNO-V
Mean distance difference (CAT_DELTA) for 40 matched entries is 0.850" for 1131397_g373
Mean and std. dev of mag. difference (MAG_DELTA) are 1.792 and 1.307 for 1131397_g373
Found 19 entries without IDs and 5 entries that are acceptable afterglow candidates for 1131397_g373.
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.
11 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=225.6030 (15:02:24.72) DEC=47.4480 (+47:26:52.8)
XRT distances are from RA=225.6210 (15:02:29.03) DEC=47.4421 (+47:26:31.4)
*** WARNING 32 per cent of entries have no IDs.
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1131397_g373 with 3x3 stamp
ra=225.67699 (15:02:42.48) dec=47.45757 (+47:27:27.2) +/- 1.1" mag=19.29+/-0.35
dist=147.4 REFID=44
*** The position of this source is inconsistent with the XRT position.
The position is 183.4 arc sec from the BAT position.
src: 6 distr. of nearby unmatched sources: 0 2 1 1 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
225.6741 47.4591 9.1 -1 USNO-B1 20.96 19.93 20.39
225.6753 47.4595 8.1 -1 USNO-B1 19.12 19.67 19.43
225.6787 47.4594 7.7 -1 USNO-B1 13.13 12.59 12.83 *
225.6826 47.4594 15.2 -1 USNO-B1 20.88 19.95 20.36
225.6833 47.4594 16.8 -1 USNO-B1 21.15 19.95 20.48
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1131397_g373 with 3x3 stamp
ra=225.67697 (15:02:42.47) dec=47.46066 (+47:27:38.4) +/- 1.1" mag=19.58+/-0.35
dist=151.9 REFID=54
*** The position of this source is inconsistent with the XRT position.
The position is 185.8 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 2 1 1 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
225.6741 47.4591 8.9 -1 USNO-B1 20.96 19.93 20.39
225.6753 47.4595 5.8 -1 USNO-B1 19.12 19.67 19.43
225.6787 47.4633 10.5 -1 USNO-B1 20.91 19.91 20.36
225.6787 47.4594 6.2 -1 USNO-B1 13.13 12.59 12.83 *
225.6826 47.4594 14.6 -1 USNO-B1 20.88 19.95 20.36
225.6833 47.4594 16.1 -1 USNO-B1 21.15 19.95 20.48
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1131397_g373 with 5x5 stamp
ra=225.67772 (15:02:42.65) dec=47.46008 (+47:27:36.3) +/- 1.1" mag=17.45+/-0.35
dist=152.6 REFID=26
*** The position of this source is inconsistent with the XRT position.
The position is 187.0 arc sec from the BAT position.
src: 8 distr. of nearby unmatched sources: 2 2 0 0 0
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
225.6741 47.4591 9.5 -1 USNO-B1 20.96 19.93 20.39
225.6753 47.4595 6.2 -1 USNO-B1 19.12 19.67 19.43
225.6787 47.4633 11.9 -1 USNO-B1 20.91 19.91 20.36
225.6787 47.4594 3.4 -1 USNO-B1 13.13 12.59 12.83 *
225.6826 47.4594 12.2 -1 USNO-B1 20.88 19.95 20.36
225.6833 47.4594 13.9 -1 USNO-B1 21.15 19.95 20.48
225.6852 47.4594 18.3 -1 USNO-B1 20.61 19.94 20.24
225.6854 47.4592 19.0 -1 USNO-B1 20.33 20.20 20.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 9 in the list of sources is a candidate afterglow for 1131397_g373 with 3x3 stamp
ra=225.67804 (15:02:42.73) dec=47.46023 (+47:27:36.8) +/- 1.1" mag=17.55+/-0.35
dist=153.6 REFID=37
*** The position of this source is inconsistent with the XRT position.
The position is 187.9 arc sec from the BAT position.
src: 9 distr. of nearby unmatched sources: 2 2 0 0 0
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
225.6741 47.4591 10.4 -1 USNO-B1 20.96 19.93 20.39
225.6753 47.4595 7.1 -1 USNO-B1 19.12 19.67 19.43
225.6787 47.4633 11.2 -1 USNO-B1 20.91 19.91 20.36
225.6787 47.4594 3.4 -1 USNO-B1 13.13 12.59 12.83 *
225.6826 47.4594 11.6 -1 USNO-B1 20.88 19.95 20.36
225.6833 47.4594 13.2 -1 USNO-B1 21.15 19.95 20.48
225.6852 47.4594 17.6 -1 USNO-B1 20.61 19.94 20.24
225.6854 47.4592 18.4 -1 USNO-B1 20.33 20.20 20.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 13 in the list of sources is a candidate afterglow for 1131397_g373 with 3x3 stamp
ra=225.67916 (15:02:43.00) dec=47.46263 (+47:27:45.5) +/- 1.1" mag=19.67+/-0.35
dist=159.8 REFID=56
*** The position of this source is inconsistent with the XRT position.
The position is 192.7 arc sec from the BAT position.
src: 13 distr. of nearby unmatched sources: 0 3 0 1 0
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
225.6741 47.4591 17.6 -1 USNO-B1 20.96 19.93 20.39
225.6753 47.4595 14.6 -1 USNO-B1 19.12 19.67 19.43
225.6787 47.4633 2.7 -1 USNO-B1 20.91 19.91 20.36 *
225.6787 47.4594 11.8 -1 USNO-B1 13.13 12.59 12.83 *
225.6826 47.4594 14.5 -1 USNO-B1 20.88 19.95 20.36
225.6833 47.4594 15.4 -1 USNO-B1 21.15 19.95 20.48
225.6852 47.4594 18.6 -1 USNO-B1 20.61 19.94 20.24
225.6854 47.4592 19.6 -1 USNO-B1 20.33 20.20 20.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 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 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 < 5.5",
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 1131397
------ Start for Possible Stand-alone Circular ----
In response to GRB221027 (Swift/BAT trigger 1131397) at 19:13:38 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
343 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 expected extinction corresponding to E(B-V) of
0.033.
------- notes for trigger 1131397 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 221027d23h19m26s461239usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1131397
-expid=688591192 -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/1131397/
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.
UVOT exposure began at MET 688591192.18168 or about 2022:300:19:19:47 UT
Found 636 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 59 sources in
srclist catalog. Found 19 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 2 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.48 mag. Found 65 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 9% of the
Genie image region.
Genie image analysis:
Found 16660.9 counts in the large background region of 6210.0 pixels or a rate
of 2.683 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 19.76 mag. for a
4-arcsec aperture.
Found 559.6 counts in the XRT position region of 201.0 pixels or a rate of
2.784 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.044 +/- 0.102 (1-sigma) cps or
21.56 mag and a range from 20.26 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.349 cps or 19.31 mag. The closest srclist source has ra= 225.6399
dec= 47.4069 mag=19.29 sep=134.78". The closest Genie source has ra= 225.5986
dec= 47.4477 mag=19.58 sep=58.02".
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?
688591192 343 U srclist found no candidates.
688591192 343 U image found no candidates.
List afterglow candidates for other finding charts.
688590979 130 WHITE srclist found no candidates.
688590979 130 WHITE image found no candidates.
688591721 872 WHITE srclist found no candidates.
688591721 872 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 47.44206
GRB_ERROR: 5.5
GRB_RA: 225.62096
IMAGE_START_TIME: 19:19:47
MAGNITUDE: 19.3
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT