image overlap message for exposure 1 of trigger 1197027
uvot_overlap.pl vrs. 2010-12-20b fem started at 231117d11h48m17s508508usUT
The observation of trigger 1197027 started 2023-11-17T03:05:38.0
Examining file ./1197027_g138_uvot_sky_image.fits
The exposure ID is 721883138
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
*** Warning -- found 16855 null pixels in the image.
The uvot region is centered at (332.4048,13.5096) with a roll angle of 253.5
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 (332.4090,13.5140) with a radius of 3.000 arc min
This is 0.361 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 at most 5.34 sq. arc min or 0.19 of the BAT error circle
The XRT error circle is centered at (332.3899,13.5226) with a radius of 0.033 arc min
This is 1.165 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 1197027
find_uvot_ag.pl vrs. 2023-04-25a fem started at 231117d11h48m18s410315usUT
Observation start time is 2023-11-17T03:05:38.0
Examining file ./1197027_g138_uvot_sources_image.fits
The exposure ID is 721883138
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 1197027_g138
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 332.3918 , 13.4974 with radius 2.00 arc min.
n_usno: 48 n_gsc: 36
Bright star catalog has no entries brighter than 12 mag
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 1197027_g138.
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=332.4090 (22:09:38.16) DEC=13.5140 (+13:30:50.4)
XRT distances are from RA=332.3899 (22:09:33.57) DEC=13.5226 (+13:31:21.2)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1197027_g138 with genie
ra=332.38932 (22:09:33.44) dec=13.49345 (+13:29:36.4) +/- 0.8" mag=18.00+/-0.14
dist=104.8 REFID=1 major=1.8 minor=1.6 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 101.1 arc sec from the BAT position.
Found 5 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 12 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
332.3864 13.4974 17.4 -1 USNO-B1 19.24 16.87 17.92
332.3881 13.4924 5.5 -1 USNO-B1 18.36 15.38 16.70 *
332.3864 13.4973 17.3 -1 GSC2.3 17.67 18.76 17.94
332.3881 13.4924 5.8 -1 GSC2.3 16.15 17.79 16.66 *
332.3858 13.4905 16.1 -1 GSC2.3 20.52 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1197027_g138 with genie
ra=332.39619 (22:09:35.09) dec=13.50130 (+13:30:04.7) +/- 0.8" mag=18.83+/-0.15
dist=79.7 REFID=2 major=1.6 minor=1.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 64.1 arc sec from the BAT position.
Found 4 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
332.3951 13.5001 5.9 -1 USNO-B1 18.96 16.69 17.70 *
332.3939 13.5032 10.6 -1 USNO-B1 20.44 18.88 19.57 *
332.3951 13.5000 6.0 -1 GSC2.3 17.41 18.30 17.87 *
332.3940 13.5032 10.3 -1 GSC2.3 19.97 22.33 99.99 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1197027_g138 with genie
ra=332.38739 (22:09:32.97) dec=13.49836 (+13:29:54.1) +/- 0.8" mag=19.29+/-0.16
dist=87.5 REFID=3 major=1.6 minor=1.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 94.3 arc sec from the BAT position.
Found 2 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
332.3864 13.4974 5.0 -1 USNO-B1 19.24 16.87 17.92 *
332.3864 13.4973 5.2 -1 GSC2.3 17.67 18.76 17.94 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
Found 4 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
332.3902 13.5279 19.3 -1 USNO-B1 18.57 19.86 19.29
332.3898 13.5280 19.7 -1 USNO-B1 20.29 99.99 99.99
332.3897 13.5224 0.9 -1 GSC2.3 20.32 22.03 99.99
332.3897 13.5278 18.9 -1 GSC2.3 19.90 99.99 99.99
The closest star is 0.85" away.
List UVOT sources within 20" of the XRT position:
There are 7939.8076 counts in the bkg source region of 893.00000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.891 counts/pixel (5-sig UL in 4" is 20.16 mag) for 1197027_g138
Do not compute counts in XRT region because position is too far from center.
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 20.72, XRT distances < 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: 1197027_721883138_231117d11h48m18s410315usUT_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(332.4048,13.5096,45")
fk5;-circle(332.396189444078,13.501295430458,6")
image paragraph message for exposure 1 of trigger 1197027
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 GRB231117 (Swift/BAT trigger 1197027) at 03:03:19 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 105 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 0.071.
------- notes for trigger 1197027 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 231117d11h48m20s127936usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1197027
-expid=721883138 -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/1197027/
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 721883138.0188 or about 2023:321:03:05:33 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 3 source(s) in Genie image catalog. Found 3 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.72 mag. Found 44 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region. The Genie image is INCOMPLETE with 16855 null pixels.
The closest Genie source has ra= 332.3962 dec= 13.5013 mag=18.83 sep=79.68".
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?
721883138 105 WHITE srclist data are not available.
721883138 105 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------