image overlap message for exposure 1 of trigger 948361
uvot_overlap.pl vrs. 2010-12-20b fem started at 200109d10h12m29s200159usUT
The observation of trigger 948361 started 2020-01-09T01:48:30.0
Examining file ./948361_g133_uvot_sky_image.fits
The exposure ID is 600227310
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (307.1268,52.9894) with a roll angle of 196.5
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (307.1710,53.0030) with a radius of 3.000 arc min
This is 1.793 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 6.62 sq. arc min or 0.23 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 0.264 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
image afterglow message for exposure 1 of trigger 948361
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200109d10h12m35s460858usUT
Observation start time is 2020-01-09T01:48:30.0
Examining file ./948361_g133_uvot_catalog_image.fits
The exposure ID is 600227310
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 41 detected source(s) for 948361_g133
Aspect correction adds -0.00248 degrees (-0.596 sec of time = -5.38 arc sec) to RA
Aspect correction adds -0.00064 degrees (-2.31 arcsec) to Dec
Total aspect correction is 5.85 arcsec
Star catalogs centered at 307.1317 , 52.9907 with radius 2.79 arc min.
n_usno: 466 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.43
RA DEC Mag Color
bright star 0: 307.12100 (20:28:29.04) 52.95205 (+52:57:07.4) 11.43 USNO-R
Mean distance difference (CAT_DELTA) for 41 matched entries is 0.524" for 948361_g133
Mean and std. dev of mag. difference (MAG_DELTA) are 1.097 and 0.545 for 948361_g133
Found 2 entries without IDs and 2 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.
0 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 8 in the list of sources is a candidate afterglow for 948361_g133 with genie
ra=307.11748 (20:28:28.20) dec=52.98499 (+52:59:06.0) +/- 0.6" mag=16.95+/-0.14
dist=34.8 REFID=24 major=0.9 minor=0.9 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 132.9 arc sec from the BAT position.
Found 9 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
307.1250 52.9861 16.8 -1 USNO-B1 19.41 18.02 18.63
307.1206 52.9853 6.9 -1 USNO-B1 15.92 13.75 14.72
307.1242 52.9829 16.4 -1 USNO-B1 99.99 18.85 99.99
307.1166 52.9882 11.7 -1 USNO-B1 20.31 99.99 99.99
307.1184 52.9848 2.0 -1 USNO-B1 15.62 14.38 14.93 *
307.1187 52.9830 7.6 -1 USNO-B1 15.95 14.29 15.02
307.1117 52.9879 16.4 -1 USNO-B1 19.14 17.89 18.45
307.1128 52.9832 12.0 -1 USNO-B1 20.25 18.84 19.47
307.1120 52.9818 16.5 -1 USNO-B1 18.30 17.46 17.84
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 29 in the list of sources is a candidate afterglow for 948361_g133 with genie
ra=307.15878 (20:28:38.11) dec=53.00005 (+53:00:00.2) +/- 0.7" mag=19.52+/-0.20
dist=77.5 REFID=9 major=0.8 minor=0.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 28.5 arc sec from the BAT position.
This source is near the edge of image (0.978)
Found 7 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
307.1580 52.9956 16.0 -1 USNO-B1 20.26 20.27 20.27
307.1521 53.0034 18.8 -1 USNO-B1 18.34 17.12 17.66
307.1595 53.0005 2.3 -1 USNO-B1 17.36 16.16 16.69 *
307.1638 52.9968 16.1 -1 USNO-B1 20.61 19.58 20.04
307.1639 52.9970 15.5 -1 USNO-B1 20.23 19.43 19.78
307.1620 53.0021 10.2 -1 USNO-B1 20.59 19.84 20.17
307.1640 53.0033 16.4 -1 USNO-B1 20.08 12.34 15.78
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 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 1.5719595E+05 counts in the bkg source region of 5018.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 31.326 counts/pixel (5-sig UL in 4" is 19.48 mag) for 948361_g133
There are 6015.6392 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 30.382 counts/pixel for 948361_g133
There are 32295.783 counts in the xrt_bkg source region of 1030.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 31.355 counts/pixel (5-sig UL in 4" is 19.48 mag) for 948361_g133
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 20.03, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 948361_600227310_200109d10h12m35s460858usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(307.1268,52.9894,45")
fk5;-circle(307.123963488282,52.9967941054318,6")
fk5;-circle(307.133529667923,52.9930453790378,6")
fk5;-circle(307.127783298083,52.9880345812748,6")
fk5;-circle(307.113522521872,52.9997827478375,6")
fk5;-circle(307.131780005501,52.9862171206799,6")
fk5;-circle(307.120961167815,52.9853393026645,6")
fk5;-circle(307.111846243737,52.987857413013,6")
fk5;-circle(307.117482403861,52.9849927755148,6")
fk5;-circle(307.118894767084,52.9828561058481,6")
fk5;-circle(307.130344333172,52.9825136994592,6")
fk5;-circle(307.124137119913,52.9803989548002,6")
fk5;-circle(307.111946451958,52.9818069185618,6")
fk5;-circle(307.127664811958,52.9786122685661,6")
fk5;-circle(307.148612894041,52.9845742823714,6")
fk5;-circle(307.117472977786,52.976492037344,6")
Region file: 948361_600227310_200109d10h12m35s460858usUT_xrt.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(307.12462,52.99364,8")
Region file: 948361_600227310_200109d10h12m35s460858usUT_xrt_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(307.12462,52.99364,25")
fk5;-circle(307.12462,52.99364,15")
fk5;-circle(307.123963488282,52.9967941054318,6")
fk5;-circle(307.133529667923,52.9930453790378,6")
fk5;-circle(307.127783298083,52.9880345812748,6")
fk5;-circle(307.131780005501,52.9862171206799,6")
fk5;-circle(307.120961167815,52.9853393026645,6")
image 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 200109d10h12m39s589786usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=948361
-expid=600227310 -meonly -msg_image
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 -------