srclist overlap message for exposure 2 of trigger 931242
uvot_overlap.pl vrs. 2010-12-20b fem started at 191024d16h26m15s128666usUT
The observation of trigger 931242 started 2019-10-24T11:22:52.4
Examining file ./931242_g23999_uvot_sky_srclist.fits
The exposure ID is 593608972
The exposure time is undefined.
The filter is U.
The uvot region is centered at (10.1002,-67.1437) with a roll angle of 208.5
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 (10.1470,-67.1390) with a radius of 3.000 arc min
This is 1.128 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 (10.1135,-67.1432) with a radius of 0.043 arc min
This is 0.312 arc min from the center of the uvot region
The area of the XRT error circle is 0.006 sq. arc min
The UVOT/XRT overlap is 0.006 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 931242
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191024d16h26m49s601469usUT
Observation start time is 2019-10-24T11:22:52.4
Examining file ./931242_g23999_uvot_catalog_srclist.fits
The exposure ID is 593608972
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 117 detected source(s) for 931242_g23999
Aspect correction adds -0.00164 degrees (-0.394 sec of time = -2.30 arc sec) to RA
Aspect correction adds 0.00001 degrees ( 0.03 arcsec) to Dec
Total aspect correction is 2.30 arcsec
Star catalogs centered at 10.1298 , -67.1514 with radius 8.77 arc min.
n_usno: 935 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 10.88262
RA DEC Mag Color
bright star 0: 10.07520 (00:40:18.05) -67.22169 (-67:13:18.1) 10.99 USNO-V
bright star 1: 10.21060 (00:40:50.54) -67.06654 (-67:03:59.5) 11.90 USNO-V
bright star 2: 9.85080 (00:39:24.19) -67.10100 (-67:06:03.6) 10.88 USNO-V
Mean distance difference (CAT_DELTA) for 52 matched entries is 0.934" for 931242_g23999
Mean and std. dev of mag. difference (MAG_DELTA) are 1.646 and 1.418 for 931242_g23999
Found 65 entries without IDs and 2 entries that are acceptable afterglow candidates for 931242_g23999.
Acceptable entries have no ID, XRT distances < 6.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
47 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=10.1470 (00:40:35.28) DEC=-67.1390 (-67:08:20.4)
XRT distances are from RA=10.1135 (00:40:27.24) DEC=-67.1432 (-67:08:35.6)
*** WARNING 55 per cent of entries have no IDs.
-----------------
Entry 5 in the list of sources is a candidate afterglow for 931242_g23999 with 3x3 stamp
ra=10.23836 (00:40:57.21) dec=-67.12120 (-67:07:16.3) +/- 1.1" mag=19.67+/-0.35
dist=191.9 REFID=113
*** The position of this source is inconsistent with the XRT position.
The position is 143.0 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
10.2264 -67.1201 17.1 -1 USNO-B1 99.99 20.67 99.99
10.2403 -67.1250 13.8 -1 USNO-B1 99.99 20.30 99.99
10.2404 -67.1220 4.1 -1 USNO-B1 13.59 12.59 13.04 *
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 931242_g23999 with 3x3 stamp
ra=10.19468 (00:40:46.72) dec=-67.09587 (-67:05:45.1) +/- 1.1" mag=19.67+/-0.35
dist=204.9 REFID=112
*** The position of this source is inconsistent with the XRT position.
The position is 169.0 arc sec from the BAT position.
src: 12 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
10.1967 -67.0961 3.0 -1 USNO-B1 17.48 16.20 16.77 *
10.1938 -67.0924 12.6 -1 USNO-B1 99.99 20.82 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
Found 1 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
10.1082 -67.1449 9.5 -1 USNO-B1 99.99 20.45 99.99
The closest star is 9.50" 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 < 6.5",
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 931242
------ Start for Possible Stand-alone Circular ----
In response to GRB191024 (Swift/BAT trigger 931242) at 04:42:52 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
23976 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
0.02.
------- notes for trigger 931242 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191024d16h26m52s397892usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=931242
-expid=593608972 -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/931242/
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 593608972.4449 or about 2019:297:11:22:47 UT
Found 931 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 117 sources in
srclist catalog. Found 65 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 9 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 20.78 mag. Found 76 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region.
Genie image analysis:
Found 9665.7 counts in the large background region of 6174.0 pixels or a rate
of 1.566 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 20.26 mag. for a
4-arcsec aperture.
Found 331.0 counts in the XRT position region of 203.0 pixels or a rate of
1.631 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.039 +/- 0.078 (1-sigma) cps or
21.89 mag and a range from 20.70 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.274 cps or 19.78 mag. The closest srclist source has ra= 10.1376
dec= -67.1370 mag=16.83 sep=40.50". The closest Genie source has ra= 10.0905
dec= -67.1453 mag=20.09 sep=33.04".
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?
593608972 23975 U srclist found no candidates.
593608972 23975 U image found no candidates.
List afterglow candidates for other finding charts.
593585829 832 WHITE srclist found no candidates.
593585829 832 WHITE image found no candidates.
593609227 24230 B srclist found no candidates.
593609227 24230 B image found no candidates.
593609541 24544 U srclist found no candidates.
593609541 24544 U image found no candidates.
593609796 24799 B srclist found no candidates.
593609796 24799 B image found no candidates.
593610110 25113 U srclist found no candidates.
593610110 25113 U image found no candidates.
593610365 25368 B srclist found no candidates.
593610365 25368 B image found no candidates.
593615788 30791 U srclist found no candidates.
593615788 30791 U image found no candidates.
593616043 31046 B srclist found no candidates.
593616043 31046 B image found no candidates.
593621538 36541 U srclist found no candidates.
593621538 36541 U image found no candidates.
593621794 36797 B srclist found no candidates.
593621794 36797 B image found no candidates.
593622106 37109 U srclist found no candidates.
593622106 37109 U image found no candidates.
593626023 41026 U srclist found no candidates.
593626023 41026 U image found no candidates.
593626279 41282 B srclist found no candidates.
593626279 41282 B image found no candidates.
593626591 41594 U srclist found no candidates.
593626591 41594 U image found no candidates.
593626847 41850 B srclist found no candidates.
593626847 41850 ? image data are not available.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -67.14322
GRB_ERROR: 6.5
GRB_RA: 10.11350
IMAGE_START_TIME: 11:22:47
MAGNITUDE: 19.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT