image overlap message for exposure 1 of trigger 960986
uvot_overlap.pl vrs. 2010-12-20b fem started at 200312d21h38m38s362463usUT
The observation of trigger 960986 started 2020-03-12T21:18:19.9
Examining file ./960986_g91_uvot_sky_image.fits
The exposure ID is 605740699
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (274.4781,-16.0976) with a roll angle of 89.7
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 (274.4710,-16.1020) with a radius of 3.000 arc min
This is 0.485 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (274.5006,-16.1312) with a radius of 0.043 arc min
This is 2.399 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 960986
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200312d21h38m43s242653usUT
Observation start time is 2020-03-12T21:18:19.9
Examining file ./960986_g91_uvot_catalog_image.fits
The exposure ID is 605740699
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 43 detected source(s) for 960986_g91
Aspect correction adds 0.00134 degrees (0.322 sec of time = 4.65 arc sec) to RA
Aspect correction adds 0.00019 degrees ( 0.69 arcsec) to Dec
Total aspect correction is 4.70 arcsec
Star catalogs centered at 274.4778 , -16.0977 with radius 2.67 arc min.
n_usno: 335 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.60322
RA DEC Mag Color
bright star 0: 274.45239 (18:17:48.57) -16.08993 (-16:05:23.8) 10.81 USNO-V
bright star 1: 274.49509 (18:17:58.82) -16.11858 (-16:07:06.9) 10.60 USNO-V
Mean distance difference (CAT_DELTA) for 40 matched entries is 0.477" for 960986_g91
Mean and std. dev of mag. difference (MAG_DELTA) are 1.068 and 0.572 for 960986_g91
Found 3 entries without IDs and 0 entries that are acceptable afterglow candidates for 960986_g91.
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.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=274.4710 (18:17:53.04) DEC=-16.1020 (-16:06:07.2)
XRT distances are from RA=274.5006 (18:18:00.14) DEC=-16.1312 (-16:07:52.3)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 31:
ra=274.49342 dec=-16.11332 +/- 0.6" mag=17.82+/-0.15 dist=69.0 REFID=36 flag=3
Found 2 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
274.4995 -16.1332 8.0 -1 USNO-B1 19.68 16.75 18.05
274.5027 -16.1330 9.7 -1 USNO-B1 19.41 17.21 18.19
The closest star is 8.00" away.
List UVOT sources within 10" of the XRT position:
There are 1.4025434E+05 counts in the bkg source region of 5391.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 26.016 counts/pixel (5-sig UL in 4" is 19.58 mag) for 960986_g91
Do not compute counts in XRT region because position is too far from center.
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 20.14, XRT distances < 6.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 960986_605740699_200312d21h38m43s242653usUT_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(274.4781,-16.0976,45")
fk5;-circle(274.469578030622,-16.1013752152517,6")
fk5;-circle(274.467582430911,-16.1011337751321,6")
fk5;-circle(274.466988956343,-16.1062126443321,6")
fk5;-circle(274.479455501252,-16.1068771212675,6")
fk5;-circle(274.476618961583,-16.0935142453491,6")
fk5;-circle(274.481049665128,-16.0908562345084,6")
fk5;-circle(274.486767452816,-16.1018532566792,6")
fk5;-circle(274.476021776762,-16.0869583124983,6")
fk5;-circle(274.488646713686,-16.098025584545,6")
fk5;-circle(274.481721165321,-16.08507870144,6")
fk5;-circle(274.483583479574,-16.0850720602788,6")
fk5;-circle(274.491296519432,-16.0920480660308,6")
image paragraph message for exposure 1 of trigger 960986
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB200312 (Swift/BAT trigger 960986) at 21:16:47 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 68 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 none of
the XRT error circle. 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 large, but
uncertain, extinction expected.
------- notes for trigger 960986 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200312d21h38m57s393352usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=960986
-expid=605740699 -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/960986/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 605740699.86352 or about 2020:072:21:18:14 UT
Found 1939 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 33% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 11 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 43 source(s) in Genie image catalog. Found 3 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.14 mag. Found 331 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
32% of the Genie image region.
Genie image analysis:
Found 140254.3 counts in the large background region of 5391.0 pixels or a rate
of 26.016 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 19.58 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.74 mag. The closest srclist
source has ra= 274.5014 dec= -16.1345 mag=16.89 sep=12.30". The closest Genie
source has ra= 274.4881 dec= -16.1231 mag=17.26 sep=52.12".
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?
605740699 67 WHITE srclist found no candidates.
605740699 67 WHITE image found no candidates.
List afterglow candidates for other finding charts.
605740911 279 U srclist found no candidates.
605740911 279 ? image data are not available.
------- Tokens for Quick GCN -------