image overlap message for exposure 2 of trigger 1006906
uvot_overlap.pl vrs. 2010-12-20b fem started at 201116d23h18m01s357921usUT
The observation of trigger 1006906 started 2020-11-16T23:14:00.9
Examining file 1006906_g881_uvot_sky_image.fits
The exposure ID is 627261240
The exposure time is 81.840 (seconds)
The filter is WHITE.
*** Warning -- found 10064 null pixels in the image.
The uvot region is centered at (85.7642,25.2378) with a roll angle of 85.3
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 (85.7760,25.2330) with a radius of 3.000 arc min
This is 0.700 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 (85.7592,25.2369) with a radius of 0.090 arc min
This is 0.279 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 1006906
find_uvot_ag.pl vrs. 2020-10-30 fem started at 201116d23h18m02s758634usUT
Observation start time is 2020-11-16T23:14:00.9
Examining file 1006906_g881_uvot_sources_image.fits
The exposure ID is 627261240
The exposure is 81.840 sec.
The bin size is 2 pixels
The filter is WHITE
There are 10 detected source(s) for 1006906_g881
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 85.7686 , 25.2497 with radius 2.18 arc min.
n_usno: 132 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Found 10 entries without IDs and 10 entries that are acceptable afterglow candidates for 1006906_g881.
Acceptable entries have no ID, XRT distances < 13.5", 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=85.7760 (05:43:06.24) DEC=25.2330 (+25:13:58.8)
XRT distances are from RA=85.7592 (05:43:02.21) DEC=25.2369 (+25:14:12.8)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1006906_g881 with genie
ra=85.77516 (05:43:06.04) dec=25.23552 (+25:14:07.9) +/- 0.8" mag=16.92+/-0.14
dist=52.2 REFID=1 major=1.6 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 9.5 arc sec from the BAT position.
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
85.7778 25.2391 15.4 -1 USNO-B1 20.15 18.46 19.21
85.7761 25.2352 3.4 -1 USNO-B1 19.95 18.64 19.22 *
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 1006906_g881 with genie
ra=85.75279 (05:43:00.67) dec=25.26316 (+25:15:47.4) +/- 0.8" mag=17.03+/-0.14
dist=96.8 REFID=2 major=5.2 minor=1.7 flag=19 (neighbor+blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 132.3 arc sec from the BAT position.
This source is near the edge of image (0.895)
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
85.7589 25.2625 20.0 -1 USNO-B1 19.37 17.66 18.42 *
85.7494 25.2593 18.0 -1 USNO-B1 14.39 12.41 13.29 *
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 1006906_g881 with genie
ra=85.75745 (05:43:01.79) dec=25.26383 (+25:15:49.8) +/- 0.8" mag=18.40+/-0.16
dist=97.1 REFID=3 major=0.7 minor=0.6 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 126.4 arc sec from the BAT position.
This source is near the edge of image (0.953)
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
85.7589 25.2625 6.7 -1 USNO-B1 19.37 17.66 18.42 *
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 1006906_g881 with genie
ra=85.75638 (05:43:01.53) dec=25.26314 (+25:15:47.3) +/- 0.7" mag=16.76+/-0.14
dist=94.9 REFID=4 major=3.5 minor=1.4 flag=19 (neighbor+blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 125.9 arc sec from the BAT position.
This source is near the edge of image (0.907)
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
85.7589 25.2625 8.5 -1 USNO-B1 19.37 17.66 18.42 *
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 4 in the list of sources is a candidate afterglow for 1006906_g881 with genie
ra=85.76307 (05:43:03.14) dec=25.26021 (+25:15:36.8) +/- 0.7" mag=16.56+/-0.14
dist=84.9 REFID=5 major=1.7 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 106.6 arc sec from the BAT position.
This source is near the edge of image (0.896)
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
85.7660 25.2607 9.7 -1 USNO-B1 20.55 19.31 19.86 *
85.7589 25.2625 15.9 -1 USNO-B1 19.37 17.66 18.42 *
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 5 in the list of sources is a candidate afterglow for 1006906_g881 with genie
ra=85.78072 (05:43:07.37) dec=25.25333 (+25:15:12.0) +/- 0.7" mag=15.71+/-0.14
dist=91.7 REFID=6 major=1.7 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 74.8 arc sec from the BAT position.
This source is near the edge of image (0.902)
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
85.7778 25.2499 15.7 -1 USNO-B1 20.14 17.64 18.75 *
85.7822 25.2535 4.9 -1 USNO-B1 20.26 18.82 19.46 *
85.7796 25.2580 17.1 -1 USNO-B1 18.77 16.48 17.50 *
85.7817 25.2569 13.2 -1 USNO-B1 15.66 13.88 14.67 *
85.7846 25.2547 13.5 -1 USNO-B1 19.11 16.73 17.79 *
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 6 in the list of sources is a candidate afterglow for 1006906_g881 with genie
ra=85.76072 (05:43:02.57) dec=25.25108 (+25:15:03.9) +/- 0.8" mag=18.07+/-0.15
dist=51.3 REFID=7 major=1.6 minor=1.2 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 81.9 arc sec from the BAT position.
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 1.6
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1006906_g881 with genie
ra=85.78445 (05:43:08.27) dec=25.24880 (+25:14:55.7) +/- 0.8" mag=17.43+/-0.15
dist=92.7 REFID=8 major=2.2 minor=0.6 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 63.2 arc sec from the BAT position.
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
85.7822 25.2535 18.6 -1 USNO-B1 20.26 18.82 19.46
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 2.2
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1006906_g881 with genie
ra=85.75865 (05:43:02.08) dec=25.23782 (+25:14:16.1) +/- 0.8" mag=18.88+/-0.18
dist=3.8 REFID=9 major=1.5 minor=0.9 flag=0
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
85.7585 25.2412 12.1 -1 USNO-B1 17.68 15.92 16.70 *
85.7550 25.2420 19.4 -1 USNO-B1 20.27 18.12 19.07
85.7604 25.2352 11.1 -1 USNO-B1 99.99 18.75 99.99 *
85.7532 25.2355 19.5 -1 USNO-B1 19.85 17.51 18.55
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 9 in the list of sources is a candidate afterglow for 1006906_g881 with genie
ra=85.78110 (05:43:07.46) dec=25.23698 (+25:14:13.1) +/- 0.8" mag=17.67+/-0.15
dist=71.3 REFID=10 major=1.7 minor=1.2 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 21.9 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
85.7778 25.2391 13.0 -1 USNO-B1 20.15 18.46 19.21 *
85.7761 25.2352 17.5 -1 USNO-B1 19.95 18.64 19.22
85.7847 25.2378 12.0 -1 USNO-B1 19.99 18.98 19.43 *
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 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
85.7585 25.2412 15.6 -1 USNO-B1 17.68 15.92 16.70
85.7604 25.2352 7.3 -1 USNO-B1 99.99 18.75 99.99
The closest star is 7.31" away.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=85.75865 (05:43:02.08) dec=25.23782 (+25:14:16.1) +/- 0.8" mag=18.88+/-0.18 dist=3.8 REFID=9 flag=0
There are 78152.328 counts in the bkg source region of 4482.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 17.437 counts/pixel (5-sig UL in 4" is 19.14 mag) for 1006906_g881
There are 3771.0671 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 18.855 counts/pixel for 1006906_g881
There are 14030.602 counts in the xrt_bkg source region of 798.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 17.582 counts/pixel (5-sig UL in 4" is 19.14 mag) for 1006906_g881
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 19.70, XRT distances < 13.5",
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: 1006906_627261240_201116d23h18m02s758634usUT_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(85.7642,25.2378,45")
fk5;-circle(85.7751563594673,25.2355159615505,6")
fk5;-circle(85.7607219107143,25.2510804973843,6")
fk5;-circle(85.7586465190738,25.2378185020274,6")
Region file: 1006906_627261240_201116d23h18m02s758634usUT_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(85.7592,+25.2369,8")
Region file: 1006906_627261240_201116d23h18m02s758634usUT_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(85.7592,+25.2369,25")
fk5;-circle(85.7592,+25.2369,15")
image paragraph message for exposure 2 of trigger 1006906
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 GRB201116 (Swift/BAT trigger 1006906) at 22:59:18 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 82 seconds with the White filter
starting 856 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 1006906 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 201116d23h18m05s043801usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1006906
-expid=627261240 -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/1006906/
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 627261240.871 or about 2020:321:23:13:55 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 10 source(s) in Genie image catalog. 1 source(s) are within 20.0" of the
xrt position. Found 10 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
19.70 mag. Found 128 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 18% of the Genie image region. The
Genie image is INCOMPLETE with 10064 null pixels.
Found 1 Genie source(s) within 20.0" of the XRT position. The brightest such
source has ra= 85.7587 dec= 25.2378 mag=18.88 sep=3.77". The closest Genie
source has ra= 85.7587 dec= 25.2378 mag=18.88 sep=3.77".
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 82 seconds with the White filter
starting 856 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 05:43:02.08 = 85.75865
DEC(J2000) = +25:14:16.2 = 25.23782
with a 90%-confidence error radius of about 0.82 arc sec. This position is 3.77
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.88 with a 1-sigma error of about 0.18. 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?
627261240 856 WHITE srclist data are not available.
627261240 856 WHITE image found no candidates.
List afterglow candidates for other finding charts.
627260535 151 ? srclist data are not available.
627260535 151 WHITE image found no candidates.
------- Tokens for Quick GCN -------