image overlap message for exposure 1 of trigger 926515
uvot_overlap.pl vrs. 2010-12-20b fem started at 190926d19h45m22s822130usUT
The observation of trigger 926515 started 2019-09-26T09:55:04.4
Examining file ./926515_g167_uvot_sky_image.fits
The exposure ID is 591184504
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 17466 null pixels in the image.
The uvot region is centered at (100.5783,59.5291) with a roll angle of 97.4
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 (100.5990,59.5110) with a radius of 3.000 arc min
This is 1.254 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 7.16 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (100.5704,59.5292) with a radius of 0.033 arc min
This is 0.241 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 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 926515
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190926d19h45m26s156534usUT
Observation start time is 2019-09-26T09:55:04.4
Examining file ./926515_g167_uvot_catalog_image.fits
The exposure ID is 591184504
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 926515_g167
Aspect correction adds 0.00353 degrees (0.848 sec of time = 6.45 arc sec) to RA
Aspect correction adds -0.00098 degrees (-3.52 arcsec) to Dec
Total aspect correction is 7.35 arcsec
Star catalogs centered at 100.5717 , 59.5316 with radius 2.28 arc min.
n_usno: 68 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 3 matched entries is 0.755" for 926515_g167
Mean and std. dev of mag. difference (MAG_DELTA) are 1.437 and 0.697 for 926515_g167
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 926515_g167.
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=100.5990 (06:42:23.76) DEC=59.5110 (+59:30:39.6)
XRT distances are from RA=100.5704 (06:42:16.90) DEC=59.5292 (+59:31:45.1)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 12688.615 counts in the bkg source region of 649.00000 pixels.
Rate in bkg region from 0 to 45 arcsec is 19.551 counts/pixel (5-sig UL in 4" is 19.74 mag) for 926515_g167
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
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 20.29, 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: 926515_591184504_190926d19h45m26s156534usUT_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(100.5783,59.5291,45")
fk5;-circle(100.593626675713,59.5364487388719,6")
Region file: 926515_591184504_190926d19h45m26s156534usUT_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(100.57042,59.52919,8")
Region file: 926515_591184504_190926d19h45m26s156534usUT_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(100.57042,59.52919,25")
fk5;-circle(100.57042,59.52919,15")
image paragraph message for exposure 1 of trigger 926515
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB190926 (Swift/BAT trigger 926515) at 09:52:16 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 144 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 none of
the XRT error circle. 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 0.06.
------- notes for trigger 926515 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190926d19h45m29s763248usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=926515
-expid=591184504 -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/926515/
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 591184504.42002 or about 2019:269:09:54:59 UT
Found 487 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 60 sources in
srclist catalog. Found 2 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 3 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 20.29 mag. Found 64 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 8% of the
Genie image region. The Genie image is INCOMPLETE with 17466 null pixels.
Genie image analysis:
Found 12688.6 counts in the large background region of 649.0 pixels or a rate
of 19.551 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 19.74 mag. for a
4-arcsec aperture. The closest srclist source has ra= 100.5620 dec= 59.5299
mag=16.82 sep=15.56". The closest Genie source has ra= 100.5936 dec= 59.5365
mag=18.78 sep=49.77".
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?
591184504 144 WHITE srclist found no candidates.
591184504 144 WHITE image found no candidates.
List afterglow candidates for other finding charts.
591184662 302 U srclist found no candidates.
591184662 302 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 59.52919
GRB_ERROR: 5
GRB_RA: 100.57042
IMAGE_START_TIME: 09:54:59
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT