image overlap message for exposure 3 of trigger 1064361
uvot_overlap.pl vrs. 2010-12-20b fem started at 210807d18h15m34s275047usUT
The observation of trigger 1064361 started 2021-08-07T18:05:28.6
Examining file 1064361_g891_uvot_sky_image.fits
The exposure ID is 650052328
The exposure time is 125.591 (seconds)
The filter is WHITE.
The uvot region is centered at (83.7225,22.2117) with a roll angle of 86.6
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 (83.7170,22.2100) with a radius of 3.000 arc min
This is 0.324 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
Could not find the location of an XRT error circle
image afterglow message for exposure 3 of trigger 1064361
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210807d18h15m36s581259usUT
Observation start time is 2021-08-07T18:05:28.6
Examining file 1064361_g891_uvot_sources_image.fits
The exposure ID is 650052328
The exposure is 125.591 sec.
The bin size is 2 pixels
The filter is WHITE
There are 9 detected source(s) for 1064361_g891
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 83.7238 , 22.2151 with radius 2.39 arc min.
n_usno: 152 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
*** WARNING -- no XRT distances are available.
Found 9 entries without IDs and 9 entries that are acceptable afterglow candidates for 1064361_g891.
Acceptable entries have no ID, BAT distance < 210" or XRT distance < 20", 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=83.7170 (05:34:52.08) DEC=22.2100 (+22:12:36.0)
XRT distances are as reported in catalog file.
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.72750 (05:34:54.60) dec=22.19547 (+22:11:43.7) +/- 0.8" mag=18.39+/-0.17
dist=63.0 REFID=1 major=0.9 minor=0.7 flag=0
Found 2 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
83.7304 22.1972 11.5 -1 USNO-B1 20.26 18.78 19.44 *
83.7251 22.1958 8.1 -1 USNO-B1 19.69 17.59 18.52 *
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 1064361_g891 with genie
ra=83.71054 (05:34:50.53) dec=22.23477 (+22:14:05.2) +/- 0.8" mag=18.41+/-0.17
dist=91.7 REFID=2 major=2.0 minor=1.6 flag=0
This source is near the edge of image (0.899)
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
83.7138 22.2381 16.0 -1 USNO-B1 18.38 16.30 17.22 *
83.7089 22.2386 14.8 -1 USNO-B1 16.51 14.92 15.63 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.70679 (05:34:49.63) dec=22.22404 (+22:13:26.6) +/- 0.7" mag=16.60+/-0.14
dist=60.9 REFID=3 major=3.8 minor=2.6 flag=2 (blended)
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
83.7055 22.2261 8.4 -1 USNO-B1 99.99 19.74 99.99 *
83.7023 22.2256 15.9 -1 USNO-B1 19.46 17.06 18.13
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 3 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.72109 (05:34:53.06) dec=22.21930 (+22:13:09.5) +/- 0.7" mag=16.87+/-0.14
dist=36.2 REFID=4 major=1.3 minor=1.1 flag=2 (blended)
Found 6 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
83.7194 22.2152 16.0 -1 USNO-B1 20.37 19.57 19.93
83.7220 22.2189 3.3 -1 USNO-B1 19.13 17.74 18.36 *
83.7223 22.2204 5.7 -1 USNO-B1 20.00 18.65 19.25 *
83.7263 22.2219 19.6 -1 USNO-B1 19.65 18.10 18.79
83.7156 22.2179 18.8 -1 USNO-B1 18.94 17.58 18.18
83.7186 22.2226 14.6 -1 USNO-B1 19.68 18.64 19.10
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 4 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.70987 (05:34:50.37) dec=22.21880 (+22:13:07.7) +/- 0.9" mag=19.17+/-0.22
dist=39.6 REFID=5 major=1.8 minor=1.7 flag=0
Found 3 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
83.7156 22.2179 19.5 -1 USNO-B1 18.94 17.58 18.18
83.7151 22.2201 18.0 -1 USNO-B1 18.62 17.23 17.85
83.7083 22.2174 7.3 -1 USNO-B1 20.40 18.24 19.20 *
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 5 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.72903 (05:34:54.97) dec=22.20926 (+22:12:33.3) +/- 0.8" mag=17.42+/-0.15
dist=40.2 REFID=6 major=1.4 minor=1.3 flag=0
Found 6 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
83.7298 22.2139 16.8 -1 USNO-B1 99.99 19.15 99.99
83.7260 22.2081 11.0 -1 USNO-B1 20.27 18.66 19.37 *
83.7257 22.2078 12.3 -1 USNO-B1 19.25 17.54 18.30 *
83.7293 22.2094 1.0 -1 USNO-B1 99.99 18.88 99.99 *
83.7274 22.2072 9.3 -1 USNO-B1 20.27 18.04 19.03 *
83.7310 22.2092 6.5 -1 USNO-B1 20.75 19.59 20.11 *
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 6 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.71606 (05:34:51.85) dec=22.20770 (+22:12:27.7) +/- 0.8" mag=17.85+/-0.15
dist=8.8 REFID=7 major=4.6 minor=3.5 flag=0
Found 1 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
83.7137 22.2058 10.6 -1 USNO-B1 18.94 17.39 18.08 *
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 7 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.74083 (05:34:57.80) dec=22.20480 (+22:12:17.3) +/- 0.8" mag=17.70+/-0.15
dist=81.6 REFID=8 major=1.1 minor=0.8 flag=3 (neighbor+blended)
Found 0 entries in star catalog(s) within 20.0" of the candidate.
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries within 13.5" or brighter than 12 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1064361_g891 with genie
ra=83.74064 (05:34:57.75) dec=22.20297 (+22:12:10.7) +/- 0.8" mag=17.38+/-0.15
dist=82.7 REFID=9 major=1.2 minor=0.9 flag=2 (blended)
Found 1 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
83.7372 22.1994 17.3 -1 USNO-B1 20.80 19.20 19.91
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries within 13.5" or brighter than 12 mag
separation of 7 and 8 is 6.6 arc sec
There are 2.8688512E+05 counts in the bkg source region of 5959.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 48.143 counts/pixel (5-sig UL in 4" is 19.05 mag) for 1064361_g891
There are 3312.3352 counts in the src source region of 51.000000 pixels.
Rate in src region with 4 arcsec radius is 64.948 counts/pixel for 1064361_g891
source too far from center -- do not compute local background.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.05, BAT distances < 210",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 2 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 1064361_650052328_210807d18h15m36s581259usUT_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(83.7225,22.2117,45")
fk5;-circle(83.7210943271518,22.219301656054,6")
fk5;-circle(83.7098700124853,22.2188030073103,6")
fk5;-circle(83.7290315381554,22.2092595467503,6")
fk5;-circle(83.7160603483412,22.2077018819042,6")
Region file: 1064361_650052328_210807d18h15m36s581259usUT_cand_src.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(83.7406366304943,22.2029738514081,4")
image paragraph message for exposure 3 of trigger 1064361
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 GRB210807 (Swift/BAT trigger 1064361) at 17:50:36 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 126 seconds with the White filter
starting 864 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 0.633.
------- notes for trigger 1064361 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210807d18h15m39s088988usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1064361
-expid=650052328 -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/1064361/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 650052328.60038 or about 2021:219:18:05:23 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 9 source(s) in Genie image catalog. Found 9 Genie image source(s) without
IDs. There are 2 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 19.05 mag. Found 148 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 17% 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?
650052328 864 WHITE srclist data are not available.
650052328 864 WHITE 83.74064 22.20297 17.38/19.1 82.7 image No
650052328 864 WHITE 83.74083 22.20480 17.70/19.1 81.6 image No
List afterglow candidates for other finding charts.
650051615 151 ? srclist data are not available.
650051615 151 WHITE 83.73277 22.22462 16.68/19.2 74.4 image No
650051773 309 ? srclist data are not available.
650051773 309 U image found no candidates.
------- Tokens for Quick GCN -------