srclist overlap message for exposure 1 of trigger 882747
uvot_overlap.pl vrs. 2010-12-20b fem started at 190109d10h52m41s335804usUT
The observation of trigger 882747 started 2019-01-09T05:16:04.3
Examining file ./882747_g202_uvot_sky_srclist.fits
The exposure ID is 568703764
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (33.2002,38.1068) with a roll angle of 259.5
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 (33.2180,38.1100) with a radius of 3.000 arc min
This is 0.859 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 (33.2022,38.1085) with a radius of 0.030 arc min
This is 0.136 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 1 of trigger 882747
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190109d10h52m45s415238usUT
Observation start time is 2019-01-09T05:16:04.3
Examining file ./882747_g202_uvot_catalog_srclist.fits
The exposure ID is 568703764
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 79 detected source(s) for 882747_g202
Aspect correction adds -0.00217 degrees (-0.521 sec of time = -6.15 arc sec) to RA
Aspect correction adds 0.00059 degrees ( 2.12 arcsec) to Dec
Total aspect correction is 6.50 arcsec
Star catalogs centered at 33.2017 , 38.1095 with radius 6.36 arc min.
n_usno: 816 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 11.88986
RA DEC Mag Color
bright star 0: 33.20004 (02:12:48.01) 38.10745 (+38:06:26.8) 11.90 USNO-V
bright star 1: 33.26782 (02:13:04.28) 38.08459 (+38:05:04.5) 11.94 USNO-V
bright star 2: 33.22804 (02:12:54.73) 38.21232 (+38:12:44.3) 11.89 USNO-V
Mean distance difference (CAT_DELTA) for 76 matched entries is 0.571" for 882747_g202
Mean and std. dev of mag. difference (MAG_DELTA) are 0.951 and 0.811 for 882747_g202
Found 7 entries without IDs and 4 entries that are acceptable afterglow candidates for 882747_g202.
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.
2 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=33.2180 (02:12:52.32) DEC=38.1100 (+38:06:36.0)
XRT distances are from RA=33.2022 (02:12:48.52) DEC=38.1085 (+38:06:30.7)
-----------------
Entry 16 in the list of sources is a candidate afterglow for 882747_g202 with 3x3 stamp
ra=33.17235 (02:12:41.36) dec=38.12190 (+38:07:18.9) +/- 1.1" mag=19.90+/-0.35
dist=97.2 REFID=76
*** The position of this source is inconsistent with the XRT position.
The position is 136.2 arc sec from the BAT position.
src: 16 distr. of nearby unmatched sources: 1 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
33.1756 38.1176 17.8 -1 USNO-B1 19.93 19.34 19.60
33.1749 38.1177 16.7 -1 USNO-B1 20.40 20.19 20.28
33.1717 38.1221 2.1 -1 USNO-B1 19.23 17.27 18.14 *
33.1714 38.1222 2.8 -1 USNO-B1 99.99 16.81 99.99 *
33.1694 38.1219 8.3 -1 USNO-B1 20.18 18.75 19.38
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 882747_g202 with 3x3 stamp
ra=33.22620 (02:12:54.29) dec=38.14620 (+38:08:46.3) +/- 1.1" mag=18.76+/-0.35
dist=151.7 REFID=40
*** The position of this source is inconsistent with the XRT position.
The position is 132.4 arc sec from the BAT position.
src: 27 distr. of nearby unmatched sources: 1 2 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
33.2251 38.1457 3.7 -1 USNO-B1 20.57 18.89 19.64 *
33.2257 38.1456 2.6 -1 USNO-B1 20.77 18.79 19.67 *
33.2270 38.1470 3.6 -1 USNO-B1 16.55 15.89 16.19 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 31 in the list of sources is a candidate afterglow for 882747_g202 with 3x3 stamp
ra=33.22749 (02:12:54.60) dec=38.14750 (+38:08:51.0) +/- 1.1" mag=18.02+/-0.35
dist=157.5 REFID=30
*** The position of this source is inconsistent with the XRT position.
The position is 137.6 arc sec from the BAT position.
src: 31 distr. of nearby unmatched sources: 2 1 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
33.2251 38.1457 9.5 -1 USNO-B1 20.57 18.89 19.64
33.2257 38.1456 8.5 -1 USNO-B1 20.77 18.79 19.67
33.2270 38.1470 2.3 -1 USNO-B1 16.55 15.89 16.19 *
33.2219 38.1507 19.7 -1 USNO-B1 99.99 20.24 99.99
33.2340 38.1475 18.6 -1 USNO-B1 17.52 17.71 17.63
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 33 in the list of sources is a candidate afterglow for 882747_g202 with 3x3 stamp
ra=33.22762 (02:12:54.63) dec=38.14782 (+38:08:52.1) +/- 1.1" mag=19.04+/-0.35
dist=158.7 REFID=61
*** The position of this source is inconsistent with the XRT position.
The position is 138.8 arc sec from the BAT position.
src: 33 distr. of nearby unmatched sources: 2 1 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
33.2251 38.1457 10.5 -1 USNO-B1 20.57 18.89 19.64
33.2257 38.1456 9.7 -1 USNO-B1 20.77 18.79 19.67
33.2270 38.1470 3.5 -1 USNO-B1 16.55 15.89 16.19 *
33.2219 38.1507 19.3 -1 USNO-B1 99.99 20.24 99.99
33.2340 38.1475 18.2 -1 USNO-B1 17.52 17.71 17.63
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 7 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
33.2020 38.1093 3.0 -1 USNO-B1 19.31 19.46 19.39
33.2031 38.1086 2.5 -1 USNO-B1 17.93 99.99 99.99
33.2033 38.1085 3.2 -1 USNO-B1 19.96 18.42 19.10
33.2034 38.1076 4.7 -1 USNO-B1 20.27 18.63 19.36
33.2000 38.1075 7.2 -1 USNO-B1 12.30 11.57 11.90
33.1989 38.1083 9.4 -1 USNO-B1 19.96 19.25 19.57
33.2030 38.1071 5.7 -1 USNO-B1 19.84 99.99 99.99
The closest star is 2.55" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=33.20430 (02:12:49.03) dec=38.10941 (+38:06:33.9) +/- 1.1" mag=19.67+/-0.35 dist=6.8 REFID=64
Matched source ra=33.20238 (02:12:48.57) dec=38.11004 (+38:06:36.1) +/- 1.1" mag=19.93+/-0.35 dist=5.5 REFID=77
Matched source ra=33.20008 (02:12:48.02) dec=38.10765 (+38:06:27.6) +/- 1.1" mag=14.04+/-0.35 dist=6.7 REFID=1
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",
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 882747
2 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB190109 (Swift/BAT trigger 882747) at 05:12:41 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 180 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 19.6 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 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.05.
------- notes for trigger 882747 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190109d10h52m49s391102usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=882747
-expid=568703764 -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/882747/
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 568703764.26746 or about 2019:009:05:15:59 UT
Found 812 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 13% of the srclist region. Found 79 sources in
srclist catalog. Found 7 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 16 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. Found 5 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.62 mag. Found 137 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 14% of the Genie image region.
Genie image analysis:
Found 59402.4 counts in the large background region of 5579.0 pixels or a rate
of 10.647 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 20.07 mag. for a
4-arcsec aperture.
Found 12151.1 counts in the XRT position region of 201.0 pixels or a rate of
60.453 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 63.029 +/- 0.751 (1-sigma) cps or
15.28 mag and a range from 15.27 to 15.29 mag. The 3-sigma UL at the XRT
position is 65.281 cps or 15.24 mag.
Found 3 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 33.2024 dec= 38.1100 mag=19.93 sep=5.46".
The closest srclist source has ra= 33.2024 dec= 38.1100 mag=19.93 sep=5.46".
Found 2 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 33.2001 dec= 38.1075 mag=13.67 sep=6.90". The closest Genie
source has ra= 33.2001 dec= 38.1075 mag=13.67 sep=6.90".
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 180 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 02:12:48.02 = 33.20010
DEC(J2000) = +38:06:27.1 = 38.10752
with a 90%-confidence error radius of about 0.61 arc sec. This position is 6.90
arc sec. from the center of the XRT error circle. The estimated magnitude is
13.67 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.05.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 180 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 02:12:48.57 = 33.20238
DEC(J2000) = +38:06:36.1 = 38.11004
with a 90%-confidence error radius of about 1.10 arc sec. This position is 5.46
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.93 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.05.
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?
568703764 180 WHITE srclist found no candidates.
568703764 180 WHITE image found no candidates.
List afterglow candidates for other finding charts.
568703923 339 U srclist found no candidates.
568703923 339 U image found no candidates.
568704455 871 WHITE srclist found no candidates.
568704455 871 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 38.10853
GRB_ERROR: 5
GRB_RA: 33.20217
IMAGE_START_TIME: 05:15:59
MAGNITUDE: 15.2
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT