image overlap message for exposure 2 of trigger 868312
uvot_overlap.pl vrs. 2010-12-20b fem started at 181022d17h51m46s599931usUT
The observation of trigger 868312 started 2018-10-22T17:36:31.0
Examining file ./868312_g377_uvot_sky_image.fits
The exposure ID is 561922591
The exposure time is 249.935 (seconds)
The filter is UVW2.
The uvot region is centered at (56.7996,-29.3346) with a roll angle of 140.5
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 (56.7950,-29.3320) with a radius of 3.000 arc min
This is 0.287 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 (56.7920,-29.3797) with a radius of 0.035 arc min
This is 2.732 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 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 868312
find_uvot_ag.pl vrs. 2017-02-17 fem started at 181022d17h51m53s154883usUT
Observation start time is 2018-10-22T17:36:31.0
Examining file ./868312_g377_uvot_sources_image.fits
The exposure ID is 561922591
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is UVW2
There are 4 detected source(s) for 868312_g377
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 56.7996 , -29.3385 with radius 2.29 arc min.
n_usno: 51 n_gsc: 0
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 868312_g377.
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=56.7950 (03:47:10.80) DEC=-29.3320 (-29:19:55.2)
XRT distances are from RA=56.7920 (03:47:10.09) DEC=-29.3797 (-29:22:46.8)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 868312_g377 with genie
ra=56.80162 (03:47:12.39) dec=-29.34402 (-29:20:38.5) +/- 1.3" mag=20.19+/-0.36
dist=131.8 REFID=1 major=2.1 minor=2.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 48.0 arc sec from the BAT position.
Found 3 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
56.8022 -29.3417 8.5 -1 USNO-B1 19.18 99.99 99.99 *
56.7975 -29.3421 14.6 -1 USNO-B1 19.34 19.05 19.18
56.8025 -29.3422 7.2 -1 USNO-B1 20.59 19.55 20.01 *
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 868312_g377 with genie
ra=56.82346 (03:47:17.63) dec=-29.33308 (-29:19:59.1) +/- 0.9" mag=19.08+/-0.23
dist=194.6 REFID=2 major=1.4 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 89.4 arc sec from the BAT position.
This source is near the edge of image (0.884)
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
56.8230 -29.3327 1.9 -1 USNO-B1 19.82 99.99 99.99 *
56.8241 -29.3315 6.0 -1 USNO-B1 19.66 19.27 19.44 *
56.8278 -29.3367 18.8 -1 USNO-B1 20.17 19.49 19.79 *
56.8278 -29.3359 16.8 -1 USNO-B1 20.24 21.17 20.76 *
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 868312_g377 with genie
ra=56.77571 (03:47:06.17) dec=-29.33411 (-29:20:02.8) +/- 1.0" mag=19.37+/-0.26
dist=171.8 REFID=3 major=1.1 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 61.0 arc sec from the BAT position.
This source is near the edge of image (0.956)
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
56.7765 -29.3329 5.0 -1 USNO-B1 16.84 15.54 16.11 *
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 3 in the list of sources is a candidate afterglow for 868312_g377 with genie
ra=56.80499 (03:47:13.20) dec=-29.34124 (-29:20:28.5) +/- 1.0" mag=19.58+/-0.28
dist=144.2 REFID=4 major=1.1 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 45.7 arc sec from the BAT position.
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
56.8022 -29.3417 8.8 -1 USNO-B1 19.18 99.99 99.99 *
56.8025 -29.3422 8.6 -1 USNO-B1 20.59 19.55 20.01 *
56.8058 -29.3396 6.4 -1 USNO-B1 19.02 18.20 18.56 *
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 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
There are 1301.6633 counts in the bkg source region of 6085.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 0.214 counts/pixel for 868312_g377
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 10.0, 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: 868312_561922591_181022d17h51m53s154883usUT_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(56.7996,-29.3346,45")
fk5;-circle(56.8016247716012,-29.3440156124819,6")
fk5;-circle(56.804994124004,-29.3412415064705,6")
image paragraph message for exposure 2 of trigger 868312
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: unexpected filter, no aspect solution
SRCLIST PROBLEM: no srclist afterglow info, unexpected filter
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB181022 (Swift/BAT trigger 868312) at 17:30:13 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the UVW2 filter starting
356 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 unexpected filter, 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 0.01.
------- notes for trigger 868312 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 181022d17h51m59s855557usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=868312
-expid=561922591 -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/868312/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- Processing cannot handle uvw2 filter.
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 561922591.02334 or about 2018:295:17:36:26 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 4 source(s) in Genie image catalog. Found 4 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 10.00 mag. Found 47 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 6% of the
Genie image region. The XRT position was OUTSIDE the star catalog search
region. The closest Genie source has ra= 56.8016 dec= -29.3440 mag=20.19
sep=131.83".
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?
561922591 356 UVW2 srclist data are not available.
561922591 356 UVW2 image found no candidates.
List afterglow candidates for other finding charts.
561922332 97 U srclist found no candidates.
561922332 97 U image found no candidates.
561923099 864 U srclist found no candidates.
561923099 864 ? image data are not available.
------- Tokens for Quick GCN -------