srclist overlap message for exposure 2 of trigger 889483
uvot_overlap.pl vrs. 2010-12-20b fem started at 190218d09h27m09s547049usUT
The observation of trigger 889483 started 2019-02-18T09:09:09.3
Examining file 889483_g899_uvot_sky_srclist.fits
The exposure ID is 572173749
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (284.6493,-8.2399) with a roll angle of 98.3
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 (284.6400,-8.2350) with a radius of 3.000 arc min
This is 0.627 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 (284.6439,-8.2374) with a radius of 0.065 arc min
This is 0.355 arc min from the center of the uvot region
The area of the XRT error circle is 0.013 sq. arc min
The UVOT/XRT overlap is 0.013 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 889483
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190218d09h27m11s277846usUT
Observation start time is 2019-02-18T09:09:09.3
Examining file 889483_g899_uvot_catalog_srclist.fits
The exposure ID is 572173749
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 889483_g899
*** 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 889483_g899 has mag 18.88
Aspect correction adds 0.00080 degrees (0.192 sec of time = 2.85 arc sec) to RA
Aspect correction adds -0.00037 degrees (-1.32 arcsec) to Dec
Total aspect correction is 3.14 arcsec
Star catalogs centered at 284.6882 , -8.1934 with radius 7.23 arc min.
n_usno: 5005 n_gsc: 0
*** WARNING -- bright star catalog has 10 entries brighter than 12 mag
The brightest has mag 8.9236
RA DEC Mag Color
bright star 0: 284.69847 (18:58:47.63) -8.24076 (-08:14:26.7) 8.92 USNO-V
bright star 1: 284.74226 (18:58:58.14) -8.18382 (-08:11:01.7) 9.66 USNO-V
bright star 2: 284.64092 (18:58:33.82) -8.14922 (-08:08:57.2) 11.36 USNO-V
bright star 3: 284.74019 (18:58:57.65) -8.23314 (-08:13:59.3) 10.92 USNO-V
bright star 4: 284.76211 (18:59:02.91) -8.21172 (-08:12:42.2) 11.32 USNO-V
bright star 5: 284.76315 (18:59:03.16) -8.21058 (-08:12:38.1) 11.31 USNO-R
bright star 6: 284.66356 (18:58:39.25) -8.27522 (-08:16:30.8) 11.61 USNO-R
bright star 7: 284.66454 (18:58:39.49) -8.27599 (-08:16:33.5) 10.87 USNO-V
bright star 8: 284.60159 (18:58:24.38) -8.21261 (-08:12:45.4) 11.67 USNO-V
bright star 9: 284.76488 (18:59:03.57) -8.24046 (-08:14:25.6) 9.02 USNO-V
Mean distance difference (CAT_DELTA) for 139 matched entries is 0.954" for 889483_g899
Mean and std. dev of mag. difference (MAG_DELTA) are 1.779 and 0.965 for 889483_g899
Found 60 entries without IDs and 0 entries that are acceptable afterglow candidates for 889483_g899.
Acceptable entries have no ID, XRT distances < 9.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
20 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=284.6400 (18:58:33.60) DEC=-8.2350 (-08:14:06.0)
XRT distances are from RA=284.6439 (18:58:34.54) DEC=-8.2374 (-08:14:14.6)
*** WARNING 31 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 4:
ra=284.69975 dec= -8.19419 +/- 1.1" mag=18.41+/-0.35 dist=252.6 REFID=146
Found 4 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
284.6450 -8.2350 9.6 -1 USNO-B1 16.98 16.66 16.80
284.6440 -8.2357 6.3 -1 USNO-B1 16.05 15.07 15.51
284.6444 -8.2386 4.9 -1 USNO-B1 18.81 17.37 18.01
284.6423 -8.2370 5.8 -1 USNO-B1 17.81 16.52 17.10
The closest star is 4.88" 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 < 9.75",
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 889483
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.
------ Start for Possible Stand-alone Circular ----
In response to GRB190218 (Swift/BAT trigger 889483) at 08:54:09 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 129 seconds with the White filter
starting 877 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 0.00% of the XRT error circle. No correction has been made for
the expected extinction corresponding to E(B-V) of 0.26.
------- notes for trigger 889483 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190218d09h27m17s370493usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=889483
-expid=572173749 -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/889483/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 572173749.2552 or about 2019:049:09:09:04 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 66% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 60 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 18.88 mag. The closest srclist source has ra= 284.6799 dec=
-8.1838 mag=16.60 sep=231.62".
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?
572173749 877 WHITE srclist found no candidates.
572173749 877 ? image data are not available.
List afterglow candidates for other finding charts.
572173415 543 WHITE 284.64550 -8.23749 17.42/19.2 5.7 srclist Yes
572173415 543 WHITE 284.64544 -8.23745 16.34/20.0 5.5 image Yes
------- Tokens for Quick GCN -------