srclist overlap message for exposure 2 of trigger 811235
uvot_overlap.pl vrs. 2010-12-20b fem started at 180222d18h03m23s232001usUT
The observation of trigger 811235 started 2018-02-22T13:24:56.8
Examining file ./811235_g892_uvot_sky_srclist.fits
The exposure ID is 540998696
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (256.5765,-36.8041) with a roll angle of 91.8
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 (256.5710,-36.8030) with a radius of 3.000 arc min
This is 0.271 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 (256.5418,-36.8121) with a radius of 0.113 arc min
This is 1.734 arc min from the center of the uvot region
The area of the XRT error circle is 0.040 sq. arc min
The UVOT/XRT overlap is 0.040 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 811235
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180222d18h03m52s655006usUT
Observation start time is 2018-02-22T13:24:56.8
Examining file ./811235_g892_uvot_catalog_srclist.fits
The exposure ID is 540998696
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 811235_g892
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 0.000
srclist_overlap returned: xrt_overlap 0.000
Dimmest detected source in 811235_g892 has mag 19.70
Aspect correction adds -0.00077 degrees (-0.186 sec of time = -2.23 arc sec) to RA
Aspect correction adds -0.00136 degrees (-4.91 arcsec) to Dec
Total aspect correction is 5.39 arcsec
Star catalogs centered at 256.6336 , -36.7206 with radius 6.96 arc min.
n_usno: 5005 n_gsc: 4627
*** WARNING -- XRT position is outside star catalog search region.
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 8.42
RA DEC Mag Color
bright star 0: 256.63090 (17:06:31.42) -36.69683 (-36:41:48.6) 10.01 USNO-V
bright star 1: 256.60866 (17:06:26.08) -36.70414 (-36:42:14.9) 11.71 USNO-V
bright star 2: 256.53869 (17:06:09.29) -36.72414 (-36:43:26.9) 10.98 USNO-R
bright star 3: 256.67908 (17:06:42.98) -36.64940 (-36:38:57.9) 10.94 USNO-V
bright star 4: 256.73700 (17:06:56.88) -36.72026 (-36:43:13.0) 8.42 GSC-V
bright star 5: 256.52985 (17:06:07.16) -36.70109 (-36:42:03.9) 10.42 USNO-V
bright star 6: 256.73719 (17:06:56.92) -36.76161 (-36:45:41.8) 11.46 USNO-V
bright star 7: 256.74378 (17:06:58.51) -36.76291 (-36:45:46.5) 11.75 USNO-V
Mean distance difference (CAT_DELTA) for 27 matched entries is 1.426" for 811235_g892
Mean and std. dev of mag. difference (MAG_DELTA) are -0.354 and 1.250 for 811235_g892
Found 164 entries without IDs and 0 entries that are acceptable afterglow candidates for 811235_g892.
Acceptable entries have no ID, XRT distances < 15", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
85 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=256.5710 (17:06:17.04) DEC=-36.8030 (-36:48:10.8)
XRT distances are from RA=256.5418 (17:06:10.03) DEC=-36.8121 (-36:48:43.4)
*** WARNING 86 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 7:
ra=256.60532 dec=-36.70918 +/- 1.1" mag=19.29+/-0.35 dist=413.3 REFID=29
Found 0 entries in star catalog(s) within 10" of the XRT position.
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 < 15",
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 2 of trigger 811235
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: damaged image (negative pixel value)
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 GRB180222 (Swift/BAT trigger 811235) at 13:10:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 872 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image processing
FAILED because of damaged image (negative pixel value). The 8'x8' region for
the list of sources generated on-board covers 0.00% of the XRT error circle. No
correction has been made for the large, but uncertain, extinction expected.
------- notes for trigger 811235 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180222d18h04m06s836874usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=811235
-expid=540998696 -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/811235/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Large extinction of 5.61 found for bat position. Unreliable extinction found
for xrt position. The Genie image appears to be DAMAGED with a min. value of
-1011.324036.
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 540998696.77186 or about 2018:053:13:24:51 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 71% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 164 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 20 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 19.34 mag. Found 720 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
89% of the Genie image region. The Genie image is INCOMPLETE with 10531 null
pixels.
The number of srclist sources filled the available telemetry. The weakest
source detected was 19.70 mag. The closest srclist source has ra= 256.6053 dec=
-36.7092 mag=19.29 sep=413.28". The closest Genie source has ra= 256.5678 dec=
-36.8040 mag=13.74 sep=80.55".
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?
540998696 871 WHITE srclist found no candidates.
540998696 871 WHITE image found no candidates.
List afterglow candidates for other finding charts.
540997906 81 WHITE srclist found no candidates.
540997906 81 WHITE image found no candidates.
------- Tokens for Quick GCN -------