image overlap message for exposure 1 of trigger 1183217
uvot_overlap.pl vrs. 2010-12-20b fem started at 230806d21h49m58s190986usUT
The observation of trigger 1183217 started 2023-08-05T11:27:38.5
Examining file ./1183217_g226_uvot_sky_image.fits
The exposure ID is 712927658
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 10191 null pixels in the image.
The uvot region is centered at (207.7403,31.1862) with a roll angle of 276.3
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 (207.7470,31.1850) with a radius of 3.000 arc min
This is 0.353 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 (207.7432,31.1913) with a radius of 0.035 arc min
This is 0.340 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 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 1183217
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230806d21h50m01s222445usUT
Observation start time is 2023-08-05T11:27:38.5
Examining file ./1183217_g226_uvot_sources_image.fits
The exposure ID is 712927658
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 0 detected source(s) for 1183217_g226
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 207.7145 , 31.2108 with radius 2.00 arc min.
n_usno: 23 n_gsc: 19
Bright star catalog has no entries brighter than 12 mag
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1183217_g226.
Acceptable entries have no ID, XRT distances < 5.25", 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=207.7470 (13:50:59.28) DEC=31.1850 (+31:11:06.0)
XRT distances are from RA=207.7432 (13:50:58.36) DEC=31.1913 (+31:11:28.8)
Found 2 entries in star catalog(s) within 20" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
207.7449 31.1908 5.6 -1 USNO-B1 21.85 99.99 99.99
207.7447 31.1907 5.4 -1 GSC2.3 20.52 21.79 99.99
The closest star is 5.38" away.
List UVOT sources within 20" of the XRT position:
There are 1.0417871E+05 counts in the bkg source region of 4622.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 22.540 counts/pixel (5-sig UL in 4" is 19.66 mag) for 1183217_g226
There are 982.87372 counts in the xrt source region of 43.000000 pixels.
Rate in xrt region with 8 arcsec radius is 22.858 counts/pixel for 1183217_g226
There are 12517.774 counts in the xrt_bkg source region of 553.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 22.636 counts/pixel (5-sig UL in 4" is 19.66 mag) for 1183217_g226
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 20.21, XRT distances < 5.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 1183217_712927658_230806d21h50m01s222445usUT_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(207.7403,31.1862,45")
Region file: 1183217_712927658_230806d21h50m01s222445usUT_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(207.74317,31.19133,8")
Region file: 1183217_712927658_230806d21h50m01s222445usUT_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(207.74317,31.19133,25")
fk5;-circle(207.74317,31.19133,15")
image paragraph message for exposure 1 of trigger 1183217
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB230805 (Swift/BAT trigger 1183217) at 11:23:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 195 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 0.014.
------- notes for trigger 1183217 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230806d21h50m13s920095usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1183217
-expid=712927658 -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/1183217/
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 712927658.45884 or about 2023:217:11:27:33 UT
Found 134 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 15 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 0 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 20.21 mag. Found 19 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 3% of the
Genie image region. The Genie image is INCOMPLETE with 10191 null pixels.
Genie image analysis:
Found 104178.7 counts in the large background region of 4622.0 pixels or a rate
of 22.540 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 19.48 mag. for a
4-arcsec aperture. The closest srclist source has ra= 207.7380 dec= 31.2120
mag=15.73 sep=76.21".
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?
712927658 195 WHITE srclist found no candidates.
712927658 195 WHITE image found no candidates.
List afterglow candidates for other finding charts.
712928321 858 WHITE srclist found no candidates.
712928321 858 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 31.19133
GRB_ERROR: 5.25
GRB_RA: 207.74317
IMAGE_START_TIME: 11:27:33
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT