srclist overlap message for exposure 1 of trigger 946476
uvot_overlap.pl vrs. 2010-12-20b fem started at 191228d17h22m18s399123usUT
The observation of trigger 946476 started 2019-12-28T00:03:55.0
Examining file ./946476_g155_uvot_sky_srclist.fits
The exposure ID is 599184235
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (5.3365,-8.6716) with a roll angle of 247.1
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (5.3390,-8.6700) with a radius of 3.000 arc min
This is 0.175 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 (5.3469,-8.6828) with a radius of 0.023 arc min
This is 0.911 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 946476
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191228d17h22m23s964538usUT
Observation start time is 2019-12-28T00:03:55.0
Examining file ./946476_g155_uvot_catalog_srclist.fits
The exposure ID is 599184235
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 70 detected source(s) for 946476_g155
Aspect correction adds 0.00007 degrees (0.018 sec of time = 0.26 arc sec) to RA
Aspect correction adds 0.00013 degrees ( 0.45 arcsec) to Dec
Total aspect correction is 0.52 arcsec
Star catalogs centered at 5.3428 , -8.6752 with radius 6.10 arc min.
n_usno: 201 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 9.4287
RA DEC Mag Color
bright star 0: 5.33391 (00:21:20.14) -8.73339 (-08:44:00.2) 9.43 USNO-V
Mean distance difference (CAT_DELTA) for 18 matched entries is 0.822" for 946476_g155
Mean and std. dev of mag. difference (MAG_DELTA) are 2.726 and 2.416 for 946476_g155
Found 52 entries without IDs and 0 entries that are acceptable afterglow candidates for 946476_g155.
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.
51 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA= 5.3390 (00:21:21.36) DEC=-8.6700 (-08:40:12.0)
XRT distances are from RA= 5.3469 (00:21:23.25) DEC=-8.6828 (-08:40:57.9)
*** WARNING 74 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 7:
ra= 5.33460 dec= -8.72714 +/- 1.1" mag=18.96+/-0.35 dist=165.7 REFID=26
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 < 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 1 of trigger 946476
------ Start for Possible Stand-alone Circular ----
In response to GRB191228 (Swift/BAT trigger 946476) at 00:01:19 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 131 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. The typical 3-sigma upper limit has been about 19.6 mag.
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
0.04.
------- notes for trigger 946476 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191228d17h22m38s384254usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=946476
-expid=599184235 -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/946476/
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 599184235.04604 or about 2019:362:00:03:50 UT
Found 197 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 70 sources in
srclist catalog. Found 52 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 5 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 20.36 mag. Found 37 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 3% of the
Genie image region.
Genie image analysis:
Found 107728.1 counts in the large background region of 6308.0 pixels or a rate
of 17.078 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 19.81 mag. for a
4-arcsec aperture.
Found 3377.3 counts in the XRT position region of 200.0 pixels or a rate of
16.887 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.391 +/- 0.418 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.254 cps or 19.53 mag. The closest srclist
source has ra= 5.3598 dec= -8.6656 mag=17.65 sep=77.02". The closest Genie
source has ra= 5.3603 dec= -8.6943 mag=20.07 sep=63.29".
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?
599184235 131 WHITE srclist found no candidates.
599184235 131 WHITE image found no candidates.
List afterglow candidates for other finding charts.
599184393 289 ? srclist data are not available.
599184393 289 U image found no candidates.
599184970 866 WHITE srclist found no candidates.
599184970 866 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -8.68275
GRB_ERROR: 5
GRB_RA: 5.34687
IMAGE_START_TIME: 00:03:50
MAGNITUDE: 19.5
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT