image overlap message for exposure 3 of trigger 912310
uvot_overlap.pl vrs. 2010-12-20b fem started at 190701d14h51m28s696982usUT
The observation of trigger 912310 started 2019-07-01T10:00:23.7
Examining file ./912310_g902_uvot_sky_image.fits
The exposure ID is 583668023
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 6233 null pixels in the image.
The uvot region is centered at (28.0708,58.9069) with a roll angle of 92.6
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 (28.0630,58.9060) with a radius of 3.000 arc min
This is 0.247 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 (28.0814,58.9094) with a radius of 0.032 arc min
This is 0.363 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 3 of trigger 912310
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190701d14h52m31s401020usUT
Observation start time is 2019-07-01T10:00:23.7
Examining file ./912310_g902_uvot_catalog_image.fits
The exposure ID is 583668023
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 20 detected source(s) for 912310_g902
Aspect correction adds 0.00057 degrees (0.136 sec of time = 1.05 arc sec) to RA
Aspect correction adds -0.00080 degrees (-2.88 arcsec) to Dec
Total aspect correction is 3.07 arcsec
Star catalogs centered at 28.0773 , 58.9087 with radius 2.48 arc min.
n_usno: 268 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 20 matched entries is 0.493" for 912310_g902
Mean and std. dev of mag. difference (MAG_DELTA) are 0.985 and 0.443 for 912310_g902
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 912310_g902.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=28.0630 (01:52:15.12) DEC=58.9060 (+58:54:21.6)
XRT distances are from RA=28.0814 (01:52:19.54) DEC=58.9094 (+58:54:33.9)
-----------------
Entry 12 in the list of sources is a candidate afterglow for 912310_g902 with genie
ra=28.04297 (01:52:10.31) dec=58.92355 (+58:55:24.8) +/- 0.7" mag=18.96+/-0.17
dist=87.7 REFID=4 major=1.0 minor=0.3 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 73.3 arc sec from the BAT position.
This source is near the edge of image (0.942)
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
28.0490 58.9211 14.3 -1 USNO-B1 20.48 18.89 19.60
28.0416 58.9231 3.1 -1 USNO-B1 18.73 16.48 17.48 *
28.0418 58.9234 2.3 -1 USNO-B1 18.23 15.75 16.85 *
28.0411 58.9283 17.4 -1 USNO-B1 19.49 17.61 18.44
28.0371 58.9261 14.2 -1 USNO-B1 20.29 18.80 19.46
28.0331 58.9236 18.4 -1 USNO-B1 18.80 16.54 17.55
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 1 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
28.0813 58.9076 6.7 -1 USNO-B1 20.43 18.73 19.48
The closest star is 6.69" away.
List UVOT sources within 10" of the XRT position:
There are 1.9596986E+05 counts in the bkg source region of 5659.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 34.630 counts/pixel (5-sig UL in 4" is 19.43 mag) for 912310_g902
There are 6977.1304 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 35.238 counts/pixel for 912310_g902
There are 36237.043 counts in the xrt_bkg source region of 1044.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 34.710 counts/pixel (5-sig UL in 4" is 19.42 mag) for 912310_g902
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 19.98, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 912310_583668023_190701d14h52m31s401020usUT_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(28.0708,58.9069,45")
fk5;-circle(28.0709746777919,58.9109320669029,6")
fk5;-circle(28.049347260173,58.9036065949335,6")
fk5;-circle(28.0729554204853,58.9134268274448,6")
fk5;-circle(28.0461940929601,58.9013825291598,6")
fk5;-circle(28.0669066435858,58.9170231198036,6")
fk5;-circle(28.0810985166925,58.9125001506884,6")
fk5;-circle(28.0857919472714,58.8969823814073,6")
Region file: 912310_583668023_190701d14h52m31s401020usUT_xrt.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(28.08142,58.90942,8")
Region file: 912310_583668023_190701d14h52m31s401020usUT_xrt_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(28.08142,58.90942,25")
fk5;-circle(28.08142,58.90942,15")
fk5;-circle(28.0709746777919,58.9109320669029,6")
fk5;-circle(28.0729554204853,58.9134268274448,6")
fk5;-circle(28.0810985166925,58.9125001506884,6")
image paragraph message for exposure 3 of trigger 912310
SRCLIST PROBLEM: srclist filled telemetry buffer
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB190701 (Swift/BAT trigger 912310) at 09:45:20 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 879 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 large, but uncertain, extinction expected.
------- notes for trigger 912310 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190701d14h52m40s046553usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=912310
-expid=583668023 -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/912310/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
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 583668023.70586 or about 2019:182:10:00:18 UT
Found 2439 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 26% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 10 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 1 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 19.98 mag. Found 264 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
29% of the Genie image region. The Genie image is INCOMPLETE with 6233 null
pixels.
Genie image analysis:
Found 195969.9 counts in the large background region of 5659.0 pixels or a rate
of 34.630 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 19.43 mag. for a
4-arcsec aperture.
Found 6977.1 counts in the XRT position region of 198.0 pixels or a rate of
35.238 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.697 +/- 0.607 (1-sigma) cps or
20.17 mag and a range from 19.49 to 22.39 mag. The 3-sigma UL at the XRT
position is 2.517 cps or 18.78 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.51 mag. The closest
srclist source has ra= 28.0815 dec= 58.9124 mag=17.82 sep=10.71". The closest
Genie source has ra= 28.0811 dec= 58.9125 mag=17.04 sep=11.10".
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?
583668023 879 WHITE srclist found no candidates.
583668023 879 WHITE image found no candidates.
List afterglow candidates for other finding charts.
583667288 144 WHITE srclist found no candidates.
583667288 144 WHITE image found no candidates.
583667446 302 U srclist found no candidates.
583667446 302 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 58.90942
GRB_ERROR: 5
GRB_RA: 28.08142
IMAGE_START_TIME: 10:00:18
MAGNITUDE: 18.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT