image overlap message for exposure 2 of trigger 948245
uvot_overlap.pl vrs. 2010-12-20b fem started at 200108d00h30m08s345888usUT
The observation of trigger 948245 started 2020-01-08T00:22:04.3
Examining file 948245_g324_uvot_sky_image.fits
The exposure ID is 600135724
The exposure time is 249.946 (seconds)
The filter is U.
The uvot region is centered at (299.5993,34.8092) with a roll angle of 192.0
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 (299.6080,34.8170) with a radius of 3.000 arc min
This is 0.633 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 (299.5975,34.8127) with a radius of 0.088 arc min
This is 0.225 arc min from the center of the uvot region
The area of the XRT error circle is 0.025 sq. arc min
The UVOT/XRT overlap is 0.025 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 948245
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200108d00h30m09s438291usUT
Observation start time is 2020-01-08T00:22:04.3
Examining file 948245_g324_uvot_sources_image.fits
The exposure ID is 600135724
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is U
There are 5 detected source(s) for 948245_g324
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 299.6111 , 34.8172 with radius 2.23 arc min.
n_usno: 213 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.92318
RA DEC Mag Color
bright star 0: 299.62051 (19:58:28.92) 34.78719 (+34:47:13.9) 10.92 USNO-V
Found 5 entries without IDs and 5 entries that are acceptable afterglow candidates for 948245_g324.
Acceptable entries have no ID, XRT distances < 13.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=299.6080 (19:58:25.92) DEC=34.8170 (+34:49:01.2)
XRT distances are from RA=299.5975 (19:58:23.40) DEC=34.8127 (+34:48:45.7)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 948245_g324 with genie
ra=299.60032 (19:58:24.08) dec=34.80816 (+34:48:29.4) +/- 0.7" mag=13.79+/-0.14
dist=18.3 REFID=1 major=7.3 minor=1.6 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 39.1 arc sec from the BAT position.
Found 6 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
299.6024 34.8116 13.7 -1 USNO-B1 18.70 16.70 17.58
299.6045 34.8091 12.7 -1 USNO-B1 99.99 18.15 99.99 *
299.6017 34.8105 9.4 -1 USNO-B1 99.99 17.94 99.99 *
299.6051 34.8052 17.6 -1 USNO-B1 17.45 15.55 16.39
299.6024 34.8051 12.7 -1 USNO-B1 19.64 17.44 18.42 *
299.5978 34.8039 17.0 -1 USNO-B1 19.84 17.97 18.80
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 948245_g324 with genie
ra=299.63080 (19:58:31.39) dec=34.80591 (+34:48:21.3) +/- 0.8" mag=17.87+/-0.16
dist=101.4 REFID=2 major=2.6 minor=1.6 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 78.3 arc sec from the BAT position.
This source is near the edge of image (0.981)
Found 5 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
299.6276 34.8072 10.5 -1 USNO-B1 17.39 14.42 15.74 *
299.6304 34.8092 12.1 -1 USNO-B1 19.69 17.88 18.68 *
299.6345 34.8104 19.5 -1 USNO-B1 99.99 18.20 99.99 *
299.6304 34.8029 10.7 -1 USNO-B1 19.73 17.80 18.66 *
299.6323 34.8032 10.7 -1 USNO-B1 19.32 16.94 18.00 *
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 948245_g324 with genie
ra=299.59144 (19:58:21.95) dec=34.82975 (+34:49:47.1) +/- 1.0" mag=19.54+/-0.27
dist=63.9 REFID=3 major=1.8 minor=0.4 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 67.1 arc sec from the BAT position.
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
299.5922 34.8243 19.7 -1 USNO-B1 99.99 18.20 99.99
299.5925 34.8249 17.9 -1 USNO-B1 20.28 18.54 19.31
299.5978 34.8309 19.3 -1 USNO-B1 99.99 18.46 99.99
299.5894 34.8276 9.8 -1 USNO-B1 19.60 17.64 18.51 *
299.5938 34.8330 13.5 -1 USNO-B1 20.12 18.16 19.03
299.5903 34.8336 14.3 -1 USNO-B1 99.99 18.45 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 3 in the list of sources is a candidate afterglow for 948245_g324 with genie
ra=299.60136 (19:58:24.33) dec=34.80599 (+34:48:21.6) +/- 0.8" mag=17.11+/-0.15
dist=26.7 REFID=4 major=3.3 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 44.2 arc sec from the BAT position.
Found 9 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
299.6045 34.8091 14.5 -1 USNO-B1 99.99 18.15 99.99
299.6017 34.8105 16.3 -1 USNO-B1 99.99 17.94 99.99
299.6072 34.8074 18.1 -1 USNO-B1 17.00 14.88 15.82
299.6071 34.8067 17.1 -1 USNO-B1 17.15 14.82 15.85
299.6051 34.8052 11.3 -1 USNO-B1 17.45 15.55 16.39 *
299.6024 34.8051 4.5 -1 USNO-B1 19.64 17.44 18.42 *
299.6063 34.8033 17.6 -1 USNO-B1 18.56 16.54 17.43
299.5978 34.8039 12.9 -1 USNO-B1 19.84 17.97 18.80 *
299.5950 34.8044 19.6 -1 USNO-B1 19.55 17.66 18.50
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 948245_g324 with genie
ra=299.62692 (19:58:30.46) dec=34.80459 (+34:48:16.5) +/- 0.8" mag=17.66+/-0.15
dist=91.7 REFID=5 major=2.4 minor=0.5 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 71.6 arc sec from the BAT position.
This source is near the edge of image (0.911)
Found 5 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
299.6276 34.8072 9.5 -1 USNO-B1 17.39 14.42 15.74 *
299.6304 34.8092 19.7 -1 USNO-B1 19.69 17.88 18.68 *
299.6240 34.8018 13.2 -1 USNO-B1 17.20 15.36 16.17 *
299.6304 34.8029 11.9 -1 USNO-B1 19.73 17.80 18.66 *
299.6323 34.8032 16.6 -1 USNO-B1 19.32 16.94 18.00 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 20.25" or brighter than 12 mag
Found 5 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
299.6027 34.8151 17.6 -1 USNO-B1 18.95 16.61 17.65
299.6021 34.8152 16.2 -1 USNO-B1 18.12 15.75 16.80
299.6024 34.8116 14.9 -1 USNO-B1 18.70 16.70 17.58
299.6017 34.8105 14.8 -1 USNO-B1 99.99 17.94 99.99
299.5966 34.8134 3.8 -1 USNO-B1 19.59 17.05 18.17
The closest star is 3.83" away.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=299.60032 (19:58:24.08) dec=34.80816 (+34:48:29.4) +/- 0.7" mag=13.79+/-0.14 dist=18.3 REFID=1 flag=16
There are 57751.309 counts in the bkg source region of 6098.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 9.471 counts/pixel (5-sig UL in 4" is 19.24 mag) for 948245_g324
There are 1712.0475 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 8.560 counts/pixel for 948245_g324
There are 11586.144 counts in the xrt_bkg source region of 1140.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 10.163 counts/pixel (5-sig UL in 4" is 19.21 mag) for 948245_g324
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 19.80, XRT distances < 13.25",
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: 948245_600135724_200108d00h30m09s438291usUT_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(299.5993,34.8092,45")
fk5;-circle(299.600321676959,34.808164730346,6")
fk5;-circle(299.601356379329,34.8059907166486,6")
Region file: 948245_600135724_200108d00h30m09s438291usUT_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(299.5975,+34.8127,8")
Region file: 948245_600135724_200108d00h30m09s438291usUT_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(299.5975,+34.8127,25")
fk5;-circle(299.5975,+34.8127,15")
fk5;-circle(299.600321676959,34.808164730346,6")
fk5;-circle(299.601356379329,34.8059907166486,6")
image paragraph message for exposure 2 of trigger 948245
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.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
1 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB200108 (Swift/BAT trigger 948245) at 00:16:39 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
300 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
large, but uncertain, extinction expected.
------- notes for trigger 948245 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200108d00h30m10s992580usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=948245
-expid=600135724 -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/948245/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 600135724.30884 or about 0000:9504:00:22:08 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 5 source(s) in Genie image catalog. 1 source(s) are within 20.0" of the
xrt position. Found 5 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
19.80 mag. Found 209 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 29% of the Genie image region.
Found 1 Genie source(s) within 20.0" of the XRT position. The brightest such
source has ra= 299.6003 dec= 34.8082 mag=13.79 sep=18.33". The closest Genie
source has ra= 299.6003 dec= 34.8082 mag=13.79 sep=18.33".
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?
600135724 300 U srclist data are not available.
600135724 300 U image found no candidates.
List afterglow candidates for other finding charts.
600135564 140 ? srclist data are not available.
600135564 140 WHITE image found no candidates.
------- Tokens for Quick GCN -------