srclist overlap message for exposure 3 of trigger 960986
uvot_overlap.pl vrs. 2010-12-20b fem started at 200312d21h43m23s957727usUT
The observation of trigger 960986 started 2020-03-12T21:31:29.8
Examining file 960986_g881_uvot_sky_srclist.fits
The exposure ID is 605741489
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (274.4761,-16.1010) with a roll angle of 89.7
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 (274.4710,-16.1020) with a radius of 3.000 arc min
This is 0.299 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 (274.5006,-16.1312) with a radius of 0.043 arc min
This is 2.299 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 3 of trigger 960986
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200312d21h43m25s033714usUT
Observation start time is 2020-03-12T21:31:29.8
Examining file 960986_g881_uvot_catalog_srclist.fits
The exposure ID is 605741489
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 960986_g881
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 0.620
srclist_overlap returned: xrt_overlap 0.465
Dimmest detected source in 960986_g881 has mag 18.35
Aspect correction adds 0.00167 degrees (0.401 sec of time = 5.78 arc sec) to RA
Aspect correction adds 0.00032 degrees ( 1.15 arcsec) to Dec
Total aspect correction is 5.89 arcsec
Star catalogs centered at 274.4954 , -16.0810 with radius 8.25 arc min.
n_usno: 3391 n_gsc: 0
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 9.70432
RA DEC Mag Color
bright star 0: 274.49509 (18:17:58.82) -16.11858 (-16:07:06.9) 10.60 USNO-V
bright star 1: 274.45239 (18:17:48.57) -16.08993 (-16:05:23.8) 10.81 USNO-V
bright star 2: 274.55214 (18:18:12.51) -16.14408 (-16:08:38.7) 11.10 USNO-V
bright star 3: 274.49587 (18:17:59.01) -15.99152 (-15:59:29.5) 11.98 USNO-V
bright star 4: 274.47511 (18:17:54.03) -15.97408 (-15:58:26.7) 11.47 USNO-V
bright star 5: 274.37925 (18:17:31.02) -16.03269 (-16:01:57.7) 11.42 USNO-V
bright star 6: 274.43506 (18:17:44.41) -16.19148 (-16:11:29.3) 9.70 USNO-V
bright star 7: 274.44522 (18:17:46.85) -16.20754 (-16:12:27.2) 11.23 USNO-V
Mean distance difference (CAT_DELTA) for 175 matched entries is 0.811" for 960986_g881
Mean and std. dev of mag. difference (MAG_DELTA) are 1.633 and 0.463 for 960986_g881
Found 16 entries without IDs and 2 entries that are acceptable afterglow candidates for 960986_g881.
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.
5 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)
-----------------
Entry 18 in the list of sources is a candidate afterglow for 960986_g881 with 1x1 stamp
ra=274.46180 (18:17:50.83) dec=-16.07563 (-16:04:32.3) +/- 1.1" mag=18.23+/-0.35
dist=240.9 REFID=149
*** The position of this source is inconsistent with the XRT position.
The position is 100.1 arc sec from the BAT position.
src: 18 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
274.4656 -16.0769 13.9 -1 USNO-B1 99.99 19.12 99.99
274.4660 -16.0746 14.9 -1 USNO-B1 20.47 18.74 19.51
274.4624 -16.0759 2.3 -1 USNO-B1 16.59 14.83 15.61 *
274.4594 -16.0751 8.7 -1 USNO-B1 20.27 17.12 18.52
274.4578 -16.0726 17.5 -1 USNO-B1 19.44 16.59 17.85
274.4569 -16.0777 18.6 -1 USNO-B1 14.32 13.09 13.63
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 32 in the list of sources is a candidate afterglow for 960986_g881 with 3x3 stamp
ra=274.44225 (18:17:46.14) dec=-16.06914 (-16:04:08.9) +/- 1.1" mag=16.69+/-0.35
dist=301.1 REFID=42
*** The position of this source is inconsistent with the XRT position.
The position is 154.6 arc sec from the BAT position.
src: 32 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
274.4447 -16.0693 8.5 -1 USNO-B1 20.55 15.93 17.98
274.4430 -16.0719 10.2 -1 USNO-B1 17.88 16.55 17.14
274.4438 -16.0653 14.9 -1 USNO-B1 19.62 16.72 18.01
274.4422 -16.0700 3.2 -1 USNO-B1 15.86 11.39 13.38 *
274.4415 -16.0704 5.2 -1 USNO-B1 15.88 99.99 99.99
274.4394 -16.0657 16.0 -1 USNO-B1 18.66 16.21 17.30
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
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 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 < 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 3 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 image afterglow info
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 nominal 150.000 seconds with the White
filter starting 858 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 46% 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 200312d21h43m29s825632usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=960986
-expid=605741489 -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/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.
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 605741489.82052 or about 2020:072:21:31:24 UT
Found 3387 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 34% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 16 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.35 mag. The closest srclist source has ra= 274.4958 dec=
-16.1189 mag=13.86 sep=47.20".
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?
605741489 857 WHITE srclist found no candidates.
605741489 857 ? image data are not available.
List afterglow candidates for other finding charts.
605740699 67 WHITE srclist found no candidates.
605740699 67 WHITE image found no candidates.
605740911 279 U srclist found no candidates.
605740911 279 U image found no candidates.
------- Tokens for Quick GCN -------