image overlap message for exposure 1 of trigger 1000665
uvot_overlap.pl vrs. 2010-12-20b fem started at 201017d21h21m07s758072usUT
The observation of trigger 1000665 started 2020-10-17T21:17:41.8
Examining file 1000665_g246_uvot_sky_image.fits
The exposure ID is 624662261
The exposure time is 12.552 (seconds)
The filter is U.
The uvot region is centered at (135.6877,-40.4322) with a roll angle of 82.6
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 (135.7740,-40.4480) with a radius of 3.000 arc min
This is 4.055 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 0.52 sq. arc min or 0.02 of the BAT error circle
The XRT error circle is centered at (135.6838,-40.4309) with a radius of 0.083 arc min
This is 0.194 arc min from the center of the uvot region
The area of the XRT error circle is 0.022 sq. arc min
The UVOT/XRT overlap is 0.022 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1000665
find_uvot_ag.pl vrs. 2017-02-17 fem started at 201017d21h21m09s239151usUT
Observation start time is 2020-10-17T21:17:41.8
Examining file 1000665_g246_uvot_sources_image.fits
The exposure ID is 624662261
The exposure is 12.552 sec.
The bin size is 2 pixels
The filter is U
There are 18 detected source(s) for 1000665_g246
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 135.6781 , -40.4245 with radius 2.00 arc min.
n_usno: 152 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 18 entries without IDs and 3 entries that are acceptable afterglow candidates for 1000665_g246.
Acceptable entries have no ID, XRT distances < 12.5", 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=135.7740 (09:03:05.76) DEC=-40.4480 (-40:26:52.8)
XRT distances are from RA=135.6838 (09:02:44.11) DEC=-40.4309 (-40:25:51.2)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 11 in the list of sources is a candidate afterglow for 1000665_g246 with genie
ra=135.68693 (09:02:44.86) dec=-40.42946 (-40:25:46.1) +/- 0.8" mag=14.57+/-0.15
dist=10.0 REFID=12 major=0.7 minor=0.2 flag=3 (neighbor+blended)
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
135.6805 -40.4276 18.8 -1 USNO-B1 18.97 18.01 18.44
135.6896 -40.4272 11.1 -1 USNO-B1 99.99 19.43 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 12 in the list of sources is a candidate afterglow for 1000665_g246 with genie
ra=135.68748 (09:02:45.00) dec=-40.43162 (-40:25:53.8) +/- 0.8" mag=12.57+/-0.14
dist=10.5 REFID=13 major=3.0 minor=1.4 flag=3 (neighbor+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
135.6896 -40.4272 17.0 -1 USNO-B1 99.99 19.43 99.99
135.6865 -40.4369 19.2 -1 USNO-B1 20.35 19.09 19.65
*** unacceptable major profile of 3.0
-----------------
Entry 13 in the list of sources is a candidate afterglow for 1000665_g246 with genie
ra=135.68515 (09:02:44.44) dec=-40.43269 (-40:25:57.7) +/- 0.8" mag=14.45+/-0.15
dist=7.5 REFID=14 major=1.4 minor=1.0 flag=3 (neighbor+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
135.6865 -40.4369 15.6 -1 USNO-B1 20.35 19.09 19.65
uvot_check_outside found 11 of 12 good pixels
##### This source remains a candidate #####
It has no entries within 13.5" or brighter than 12 mag
Found 2 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
135.6805 -40.4276 14.8 -1 USNO-B1 18.97 18.01 18.44
135.6780 -40.4308 15.9 -1 USNO-B1 20.75 19.18 19.88
The closest star is 14.77" away.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=135.67814 (09:02:42.75) dec=-40.42838 (-40:25:42.2) +/- 1.0" mag=17.01+/-0.26 dist=17.9 REFID=11 flag=0
Unmatched source ra=135.68693 (09:02:44.86) dec=-40.42946 (-40:25:46.1) +/- 0.8" mag=14.57+/-0.15 dist=10.0 REFID=12 flag=3
Unmatched source ra=135.68748 (09:02:45.00) dec=-40.43162 (-40:25:53.8) +/- 0.8" mag=12.57+/-0.14 dist=10.5 REFID=13 flag=3
Unmatched source ra=135.68515 (09:02:44.44) dec=-40.43269 (-40:25:57.7) +/- 0.8" mag=14.45+/-0.15 dist=7.5 REFID=14 flag=3
Unmatched source ra=135.67870 (09:02:42.89) dec=-40.43333 (-40:25:60.0) +/- 0.9" mag=16.41+/-0.21 dist=16.5 REFID=17 flag=2
Unmatched source ra=135.68353 (09:02:44.05) dec=-40.43568 (-40:26:08.4) +/- 0.8" mag=14.60+/-0.15 dist=17.2 REFID=18 flag=2
There are 4223.8472 counts in the bkg source region of 4944.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 0.854 counts/pixel (5-sig UL in 4" is 17.30 mag) for 1000665_g246
There are 290.65891 counts in the src source region of 50.000000 pixels.
Rate in src region with 4 arcsec radius is 5.813 counts/pixel for 1000665_g246
There are 912.51898 counts in the cand_src_bkg source region of 808.00000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 1.129 counts/pixel (5-sig UL in 4" is 17.15 mag) for 1000665_g246
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 17.86, XRT distances < 12.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Results are questionable because aspect solution FAILED.
Region file: 1000665_624662261_201017d21h21m09s239151usUT_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(135.6877,-40.4322,45")
fk5;-circle(135.687906380383,-40.435802089223,6")
fk5;-circle(135.670650775904,-40.4271378120276,6")
fk5;-circle(135.681735420015,-40.4250785676994,6")
fk5;-circle(135.688032134806,-40.425001228442,6")
fk5;-circle(135.684561212091,-40.4248977500128,6")
fk5;-circle(135.692543874061,-40.4284429925923,6")
fk5;-circle(135.678139505698,-40.4283769005256,6")
fk5;-circle(135.686927826152,-40.4294620640605,6")
fk5;-circle(135.687484276753,-40.4316168455924,6")
fk5;-circle(135.685150686373,-40.4326876368862,6")
fk5;-circle(135.674149878156,-40.429157826233,6")
fk5;-circle(135.692221126602,-40.4321032089034,6")
fk5;-circle(135.678702195633,-40.4333251124509,6")
fk5;-circle(135.683530887705,-40.4356767068824,6")
Region file: 1000665_624662261_201017d21h21m09s239151usUT_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(135.685150686373,-40.4326876368862,4")
Region file: 1000665_624662261_201017d21h21m09s239151usUT_cand_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(135.685150686373,-40.4326876368862,25")
fk5;-circle(135.685150686373,-40.4326876368862,15")
fk5;-circle(135.687906380383,-40.435802089223,6")
fk5;-circle(135.681735420015,-40.4250785676994,6")
fk5;-circle(135.688032134806,-40.425001228442,6")
fk5;-circle(135.684561212091,-40.4248977500128,6")
fk5;-circle(135.692543874061,-40.4284429925923,6")
fk5;-circle(135.678139505698,-40.4283769005256,6")
fk5;-circle(135.686927826152,-40.4294620640605,6")
fk5;-circle(135.692221126602,-40.4321032089034,6")
fk5;-circle(135.678702195633,-40.4333251124509,6")
fk5;-circle(135.683530887705,-40.4356767068824,6")
image paragraph message for exposure 1 of trigger 1000665
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.
------ Start for Possible Stand-alone Circular ----
In response to GRB201017 (Swift/BAT trigger 1000665) at 21:13:34 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 13 seconds with the U filter starting
221 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 1000665 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 201017d21h21m26s899866usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1000665
-expid=624662261 -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/1000665/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 624662261.78112 or about 2020:291:21:17:36 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 18 source(s) in Genie image catalog. 6 source(s) are within 20.0" of the
xrt position. Found 18 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
17.86 mag. Found 148 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 25% of the Genie image region.
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 13 seconds with the U filter starting
221 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 09:02:44.44 = 135.68515
DEC(J2000) = -40:25:57.7 = -40.43269
with a 90%-confidence error radius of about 0.76 arc sec. This position is 7.47
arc sec. from the center of the XRT error circle. The estimated magnitude is
14.45 with a 1-sigma error of about 0.15. No correction has been made for the
large, but uncertain, extinction expected.
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?
624662261 221 U srclist data are not available.
624662261 221 U 135.68515 -40.43269 14.45/17.9 7.5 image No
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------