image overlap message for exposure 2 of trigger 912310
uvot_overlap.pl vrs. 2010-12-20b fem started at 190701d14h51m27s746486usUT
The observation of trigger 912310 started 2019-07-01T09:50:46.6
Examining file ./912310_g325_uvot_sky_image.fits
The exposure ID is 583667446
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (28.0698,58.9076) 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 0.232 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 0.376 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 2 of trigger 912310
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190701d14h52m06s346254usUT
Observation start time is 2019-07-01T09:50:46.6
Examining file ./912310_g325_uvot_catalog_image.fits
The exposure ID is 583667446
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 14 detected source(s) for 912310_g325
Aspect correction adds 0.00140 degrees (0.335 sec of time = 2.60 arc sec) to RA
Aspect correction adds -0.00071 degrees (-2.55 arcsec) to Dec
Total aspect correction is 3.64 arcsec
Star catalogs centered at 28.0765 , 58.9019 with radius 2.68 arc min.
n_usno: 299 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.09488
RA DEC Mag Color
bright star 0: 28.07075 (01:52:16.98) 58.86553 (+58:51:55.9) 11.99 USNO-V
bright star 1: 28.12400 (01:52:29.76) 58.87353 (+58:52:24.7) 10.09 USNO-V
Mean distance difference (CAT_DELTA) for 14 matched entries is 0.617" for 912310_g325
Mean and std. dev of mag. difference (MAG_DELTA) are 1.848 and 1.051 for 912310_g325
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 912310_g325.
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.
0 sources matched bright stars.
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)
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 43036.555 counts in the bkg source region of 5845.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 7.363 counts/pixel (5-sig UL in 4" is 19.38 mag) for 912310_g325
There are 1560.1631 counts in the xrt source region of 205.00000 pixels.
Rate in xrt region with 8 arcsec radius is 7.611 counts/pixel for 912310_g325
There are 8395.4121 counts in the xrt_bkg source region of 1139.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 7.371 counts/pixel (5-sig UL in 4" is 19.38 mag) for 912310_g325
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 19.94, 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_583667446_190701d14h52m06s346254usUT_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(28.0698,58.9076,45")
fk5;-circle(28.0492641557195,58.9035860234952,6")
fk5;-circle(28.0729861793853,58.9133989832112,6")
fk5;-circle(28.0459904308923,58.9013474878292,6")
fk5;-circle(28.0669552082115,58.9169855170155,6")
fk5;-circle(28.0810223143592,58.9125271514491,6")
fk5;-circle(28.0856367714873,58.8970618574169,6")
fk5;-circle(28.0680569550272,58.9215718269834,6")
Region file: 912310_583667446_190701d14h52m06s346254usUT_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_583667446_190701d14h52m06s346254usUT_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(28.0729861793853,58.9133989832112,6")
fk5;-circle(28.0810223143592,58.9125271514491,6")
image paragraph message for exposure 2 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 250 seconds with the U filter starting
302 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 19.2 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 18.0 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 190701d14h52m18s571564usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=912310
-expid=583667446 -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 583667446.61796 or about 2019:182:09:50:41 UT
Found 2872 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 12 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Found 14 source(s) in Genie image catalog. Found 0 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 19.94 mag. Found 295 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
28% of the Genie image region.
Genie image analysis:
Found 43036.6 counts in the large background region of 5845.0 pixels or a rate
of 7.363 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 19.42 mag. for a
4-arcsec aperture.
Found 1560.2 counts in the XRT position region of 205.0 pixels or a rate of
7.611 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.197 +/- 0.171 (1-sigma) cps or
20.15 mag and a range from 19.47 to 22.36 mag. The 3-sigma UL at the XRT
position is 0.710 cps or 18.75 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.21 mag. The closest
srclist source has ra= 28.0809 dec= 58.9127 mag=17.70 sep=11.77". The closest
Genie source has ra= 28.0810 dec= 58.9125 mag=17.54 sep=11.21".
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?
583667446 302 U srclist found no candidates.
583667446 302 U 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.
583668023 879 WHITE srclist found no candidates.
583668023 879 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 58.90942
GRB_ERROR: 5
GRB_RA: 28.08142
IMAGE_START_TIME: 09:50:41
MAGNITUDE: 18.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT