srclist overlap message for exposure 1 of trigger 948361
uvot_overlap.pl vrs. 2010-12-20b fem started at 200109d10h12m27s364955usUT
The observation of trigger 948361 started 2020-01-09T01:48:30.0
Examining file ./948361_g133_uvot_sky_srclist.fits
The exposure ID is 600227310
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (307.1712,52.9975) with a roll angle of 196.5
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 (307.1710,53.0030) with a radius of 3.000 arc min
This is 0.330 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 (307.1246,52.9936) with a radius of 0.028 arc min
This is 1.699 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 948361
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200109d10h12m31s856185usUT
Observation start time is 2020-01-09T01:48:30.0
Examining file ./948361_g133_uvot_catalog_srclist.fits
The exposure ID is 600227310
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 948361_g133
*** 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 948361_g133 has mag 18.66
Aspect correction adds -0.00252 degrees (-0.604 sec of time = -5.45 arc sec) to RA
Aspect correction adds -0.00066 degrees (-2.38 arcsec) to Dec
Total aspect correction is 5.95 arcsec
Star catalogs centered at 307.1606 , 52.9979 with radius 6.25 arc min.
n_usno: 2175 n_gsc: 0
*** WARNING -- bright star catalog has 9 entries brighter than 12 mag
The brightest has mag 8.62328
RA DEC Mag Color
bright star 0: 307.19472 (20:28:46.73) 53.04364 (+53:02:37.1) 11.04 USNO-V
bright star 1: 307.12100 (20:28:29.04) 52.95205 (+52:57:07.4) 11.43 USNO-R
bright star 2: 307.25417 (20:29:01.00) 52.95181 (+52:57:06.5) 11.70 USNO-V
bright star 3: 307.26751 (20:29:04.20) 53.03511 (+53:02:06.4) 8.62 USNO-V
bright star 4: 307.18830 (20:28:45.19) 53.07656 (+53:04:35.6) 11.34 USNO-V
bright star 5: 307.14433 (20:28:34.64) 52.90666 (+52:54:24.0) 10.29 USNO-V
bright star 6: 307.03661 (20:28:08.79) 52.94331 (+52:56:35.9) 11.28 USNO-V
bright star 7: 307.25153 (20:29:00.37) 52.92220 (+52:55:19.9) 11.62 USNO-V
bright star 8: 307.00273 (20:28:00.66) 53.01350 (+53:00:48.6) 11.89 USNO-V
Mean distance difference (CAT_DELTA) for 190 matched entries is 0.680" for 948361_g133
Mean and std. dev of mag. difference (MAG_DELTA) are 1.578 and 0.514 for 948361_g133
Found 8 entries without IDs and 6 entries that are acceptable afterglow candidates for 948361_g133.
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.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=307.1710 (20:28:41.04) DEC=53.0030 (+53:00:10.8)
XRT distances are from RA=307.1246 (20:28:29.91) DEC=52.9936 (+52:59:37.1)
-----------------
Entry 30 in the list of sources is a candidate afterglow for 948361_g133 with 1x1 stamp
ra=307.15483 (20:28:37.16) dec=52.97107 (+52:58:15.9) +/- 1.1" mag=18.08+/-0.35
dist=104.4 REFID=121
*** The position of this source is inconsistent with the XRT position.
The position is 120.2 arc sec from the BAT position.
src: 30 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
307.1499 52.9756 19.6 -1 USNO-B1 17.54 16.62 17.03
307.1525 52.9750 14.9 -1 USNO-B1 19.62 18.99 19.27
307.1523 52.9738 11.4 -1 USNO-B1 19.39 18.62 18.96
307.1628 52.9718 17.4 -1 USNO-B1 19.63 18.88 19.22
307.1565 52.9716 4.2 -1 USNO-B1 18.74 16.48 17.49
307.1557 52.9715 2.3 -1 USNO-B1 17.02 16.39 16.67 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 51 in the list of sources is a candidate afterglow for 948361_g133 with 3x3 stamp
ra=307.16352 (20:28:39.25) dec=52.96489 (+52:57:53.6) +/- 1.1" mag=17.76+/-0.35
dist=133.5 REFID=85
*** The position of this source is inconsistent with the XRT position.
The position is 138.1 arc sec from the BAT position.
src: 51 distr. of nearby unmatched sources: 2 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
307.1683 52.9692 18.6 -1 USNO-B1 19.05 18.19 18.57
307.1622 52.9662 5.6 -1 USNO-B1 19.66 18.45 18.99
307.1623 52.9657 3.9 -1 USNO-B1 99.99 14.44 99.99 *
307.1723 52.9660 19.5 -1 USNO-B1 17.62 16.51 17.01
307.1626 52.9648 2.1 -1 USNO-B1 16.33 14.75 15.45 *
307.1591 52.9628 12.2 -1 USNO-B1 18.66 16.45 17.43
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 108 in the list of sources is a candidate afterglow for 948361_g133 with 1x1 stamp
ra=307.21350 (20:28:51.24) dec=53.02075 (+53:01:14.7) +/- 1.1" mag=18.23+/-0.35
dist=215.8 REFID=126
*** The position of this source is inconsistent with the XRT position.
The position is 112.0 arc sec from the BAT position.
src: 108 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
307.2099 53.0157 19.9 -1 USNO-B1 20.87 18.83 19.74
307.2148 53.0205 2.9 -1 USNO-B1 16.45 15.03 15.66 *
307.2127 53.0234 9.6 -1 USNO-B1 17.59 16.31 16.88
307.2202 53.0178 18.1 -1 USNO-B1 19.52 18.33 18.86
307.2181 53.0201 10.2 -1 USNO-B1 17.25 16.12 16.62
307.2203 53.0226 16.1 -1 USNO-B1 20.83 18.78 19.69
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 123 in the list of sources is a candidate afterglow for 948361_g133 with 3x3 stamp
ra=307.18032 (20:28:43.28) dec=53.05093 (+53:03:03.4) +/- 1.1" mag=16.96+/-0.35
dist=238.9 REFID=42
*** The position of this source is inconsistent with the XRT position.
The position is 173.7 arc sec from the BAT position.
src: 123 distr. of nearby unmatched sources: 0 1 0 0 1
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
307.1787 53.0460 17.9 -1 USNO-B1 19.79 18.98 19.34
307.1798 53.0472 13.6 -1 USNO-B1 99.99 19.06 99.99
307.1810 53.0515 2.5 -1 USNO-B1 14.99 13.75 14.30 *
307.1745 53.0523 13.4 -1 USNO-B1 19.29 17.63 18.37
307.1851 53.0551 18.4 -1 USNO-B1 20.11 19.18 19.59
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 127 in the list of sources is a candidate afterglow for 948361_g133 with 1x1 stamp
ra=307.18174 (20:28:43.62) dec=53.05220 (+53:03:07.9) +/- 1.1" mag=17.78+/-0.35
dist=244.4 REFID=127
*** The position of this source is inconsistent with the XRT position.
The position is 178.6 arc sec from the BAT position.
src: 127 distr. of nearby unmatched sources: 0 1 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
307.1798 53.0472 18.6 -1 USNO-B1 99.99 19.06 99.99
307.1810 53.0515 3.0 -1 USNO-B1 14.99 13.75 14.30 *
307.1745 53.0523 15.6 -1 USNO-B1 19.29 17.63 18.37
307.1893 53.0528 16.4 -1 USNO-B1 19.14 18.04 18.53
307.1851 53.0551 12.9 -1 USNO-B1 20.11 19.18 19.59
307.1776 53.0566 18.2 -1 USNO-B1 18.29 16.21 17.14
307.1797 53.0565 16.1 -1 USNO-B1 18.88 16.88 17.77
307.1793 53.0568 17.6 -1 USNO-B1 16.56 15.02 15.71
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 136 in the list of sources is a candidate afterglow for 948361_g133 with 1x1 stamp
ra=307.17955 (20:28:43.09) dec=53.05747 (+53:03:26.9) +/- 1.1" mag=18.18+/-0.35
dist=258.7 REFID=119
*** The position of this source is inconsistent with the XRT position.
The position is 197.0 arc sec from the BAT position.
src: 136 distr. of nearby unmatched sources: 0 0 0 1 1
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
307.1851 53.0551 14.7 -1 USNO-B1 20.11 19.18 19.59
307.1776 53.0566 5.2 -1 USNO-B1 18.29 16.21 17.14
307.1797 53.0565 3.5 -1 USNO-B1 18.88 16.88 17.77 *
307.1793 53.0568 2.3 -1 USNO-B1 16.56 15.02 15.71 *
307.1827 53.0581 7.1 -1 USNO-B1 20.15 19.05 19.54
307.1800 53.0612 13.4 -1 USNO-B1 20.01 19.45 19.70
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
307.1220 52.9955 8.8 -1 USNO-B1 20.88 20.24 20.52
The closest star is 8.79" 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 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 948361
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB200109 (Swift/BAT trigger 948361) at 01:46:16 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 109 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. Because of the density of catalogued stars, further
analysis is required to report an upper limit for any afterglow in the
sub-image. 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 0.29.
------- notes for trigger 948361 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200109d10h12m37s555093usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=948361
-expid=600227310 -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/948361/
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 600227310.0339 or about 0000:9505:01:48:34 UT
Found 2171 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 38% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 8 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 41 source(s) in Genie image catalog. Found 2 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.03 mag. Found 462 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
41% of the Genie image region.
Genie image analysis:
Found 157196.0 counts in the large background region of 5018.0 pixels or a rate
of 31.326 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 19.48 mag. for a
4-arcsec aperture.
Found 6015.6 counts in the XRT position region of 198.0 pixels or a rate of
30.382 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -1.285 +/- 0.566 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.698 cps or 19.21 mag. The number of srclist
sources filled the available telemetry. The weakest source detected was 18.66
mag. The closest srclist source has ra= 307.1238 dec= 52.9967 mag=18.05
sep=11.04". The closest Genie source has ra= 307.1240 dec= 52.9968 mag=17.29
sep=11.44".
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?
600227310 109 WHITE srclist found no candidates.
600227310 109 WHITE image found no candidates.
List afterglow candidates for other finding charts.
600227468 267 U srclist found no candidates.
600227468 267 U image found no candidates.
600228073 872 WHITE srclist found no candidates.
600228073 872 WHITE image found no candidates.
------- Tokens for Quick GCN -------