image overlap message for exposure 1 of trigger 1173731
uvot_overlap.pl vrs. 2010-12-20b fem started at 230606d06h15m30s460628usUT
The observation of trigger 1173731 started 2023-06-06T01:01:32.5
Examining file ./1173731_g2814_uvot_sky_image.fits
The exposure ID is 707706092
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (166.8115,36.4868) with a roll angle of 290.2
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 (166.7956,36.5090) with a radius of 3.000 arc min
This is 1.535 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 7.07 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (166.8095,36.4843) with a radius of 0.037 arc min
This is 0.182 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 0.004 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1173731
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230606d06h15m31s102999usUT
Observation start time is 2023-06-06T01:01:32.5
Examining file ./1173731_g2814_uvot_sources_image.fits
The exposure ID is 707706092
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 0 detected source(s) for 1173731_g2814
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 166.7834 , 36.5044 with radius 2.00 arc min.
n_usno: 26 n_gsc: 13
Bright star catalog has no entries brighter than 12 mag
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1173731_g2814.
Acceptable entries have no ID, XRT distances < 5.5", 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=166.7956 (11:07:10.94) DEC=36.5090 (+36:30:32.4)
XRT distances are from RA=166.8095 (11:07:14.28) DEC=36.4843 (+36:29:03.3)
Found 1 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
166.8113 36.4892 18.7 -1 USNO-B1 21.87 20.42 21.06
The closest star is 18.73" away.
List UVOT sources within 20" of the XRT position:
There are 1.6159470E+05 counts in the bkg source region of 6318.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 25.577 counts/pixel (5-sig UL in 4" is 19.59 mag) for 1173731_g2814
There are 5143.3223 counts in the xrt source region of 201.00000 pixels.
Rate in xrt region with 8 arcsec radius is 25.589 counts/pixel for 1173731_g2814
There are 31682.842 counts in the xrt_bkg source region of 1246.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 25.428 counts/pixel (5-sig UL in 4" is 19.59 mag) for 1173731_g2814
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 20.14, XRT distances < 5.5",
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: 1173731_707706092_230606d06h15m31s102999usUT_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(166.8115,36.4868,45")
Region file: 1173731_707706092_230606d06h15m31s102999usUT_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(166.80950,36.48425,8")
Region file: 1173731_707706092_230606d06h15m31s102999usUT_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(166.80950,36.48425,25")
fk5;-circle(166.80950,36.48425,15")
image paragraph message for exposure 1 of trigger 1173731
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no aspect solution
SRCLIST PROBLEM: no srclist afterglow info
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB230606 (Swift/BAT trigger 1173731) at 00:14:37 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 2783 seconds after the BAT trigger. No credible afterglow candidate
has been found in the initial data products. The 2.7'x2.7' sub-image processing
FAILED because of no aspect solution. Results from the list of sources
generated on-board are not available at this time. No correction has been made
for the expected extinction corresponding to E(B-V) of 0.015.
------- notes for trigger 1173731 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230606d06h15m32s829774usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1173731
-expid=707706092 -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/1173731/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 707706092.51712 or about 2023:157:01:01:27 UT
No information found about the number of stars in the star catalog for srclist
region.
THERE IS NO ASPECT SOLUTION for the image data.
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 20.14 mag. Found 22 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 3% of the
Genie image region.
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?
707706092 2783 WHITE srclist data are not available.
707706092 2783 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------