image overlap message for exposure 1 of trigger 1006917
uvot_overlap.pl vrs. 2010-12-20b fem started at 201117d00h24m22s764889usUT
The observation of trigger 1006917 started 2020-11-17T00:17:33.4
Examining file 1006917_g297_uvot_sky_image.fits
The exposure ID is 627265053
The exposure time is 216.991 (seconds)
The filter is U.
The uvot region is centered at (85.8307,25.5986) with a roll angle of 84.7
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 (85.8260,25.5970) with a radius of 3.000 arc min
This is 0.275 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 (85.8667,25.5633) with a radius of 0.092 arc min
This is 2.878 arc min from the center of the uvot region
The area of the XRT error circle is 0.026 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 1 of trigger 1006917
find_uvot_ag.pl vrs. 2020-10-30 fem started at 201117d00h24m24s153507usUT
Observation start time is 2020-11-17T00:17:33.4
Examining file 1006917_g297_uvot_sources_image.fits
The exposure ID is 627265053
The exposure is 216.991 sec.
The bin size is 2 pixels
The filter is U
There are 7 detected source(s) for 1006917_g297
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 85.8386 , 25.5959 with radius 2.29 arc min.
n_usno: 127 n_gsc: 0
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Found 7 entries without IDs and 7 entries that are acceptable afterglow candidates for 1006917_g297.
Acceptable entries have no ID, XRT distances < 13.75", 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=85.8260 (05:43:18.24) DEC=25.5970 (+25:35:49.2)
XRT distances are from RA=85.8667 (05:43:28.01) DEC=25.5633 (+25:33:47.9)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1006917_g297 with genie
ra=85.83268 (05:43:19.84) dec=25.57631 (+25:34:34.7) +/- 1.0" mag=19.77+/-0.27
dist=120.0 REFID=1 major=1.0 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 77.6 arc sec from the BAT position.
This source is near the edge of image (0.894)
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
85.8326 25.5804 14.6 -1 USNO-B1 19.88 17.14 18.35 *
85.8353 25.5786 11.7 -1 USNO-B1 20.17 17.85 18.88 *
85.8316 25.5790 10.2 -1 USNO-B1 17.27 15.18 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 1 in the list of sources is a candidate afterglow for 1006917_g297 with genie
ra=85.84539 (05:43:22.89) dec=25.61544 (+25:36:55.6) +/- 0.7" mag=16.05+/-0.14
dist=200.0 REFID=2 major=2.4 minor=1.4 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 91.5 arc sec from the BAT position.
This source is near the edge of image (0.920)
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
85.8438 25.6144 6.5 -1 USNO-B1 17.92 15.97 16.84 *
85.8445 25.6175 8.1 -1 USNO-B1 20.12 18.64 19.30 *
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 1006917_g297 with genie
ra=85.83272 (05:43:19.85) dec=25.61296 (+25:36:46.6) +/- 1.3" mag=20.23+/-0.36
dist=210.1 REFID=3 major=2.0 minor=2.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 61.4 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
85.8309 25.6112 8.5 -1 USNO-B1 17.87 15.50 16.56 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 13.5" or brighter than 12 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1006917_g297 with genie
ra=85.81901 (05:43:16.56) dec=25.60816 (+25:36:29.4) +/- 0.8" mag=17.81+/-0.15
dist=223.7 REFID=4 major=1.6 minor=1.1 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 46.1 arc sec from the BAT position.
Found 7 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
85.8206 25.6050 12.7 -1 USNO-B1 18.91 15.78 17.17 *
85.8211 25.6065 8.9 -1 USNO-B1 20.16 17.70 18.79 *
85.8220 25.6112 14.7 -1 USNO-B1 20.20 18.00 18.98
85.8228 25.6122 19.1 -1 USNO-B1 19.79 17.26 18.38
85.8188 25.6115 12.0 -1 USNO-B1 20.26 18.57 19.32 *
85.8173 25.6122 15.5 -1 USNO-B1 19.97 18.97 19.41
85.8130 25.6081 19.7 -1 USNO-B1 99.99 19.89 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 4 in the list of sources is a candidate afterglow for 1006917_g297 with genie
ra=85.85820 (05:43:25.97) dec=25.60327 (+25:36:11.8) +/- 0.8" mag=16.74+/-0.15
dist=146.5 REFID=5 major=2.1 minor=1.0 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 106.9 arc sec from the BAT position.
This source is near the edge of image (0.927)
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
85.8557 25.6031 8.2 -1 USNO-B1 20.30 18.39 19.24 *
85.8561 25.6078 17.8 -1 USNO-B1 19.75 17.37 18.42 *
85.8606 25.5984 19.2 -1 USNO-B1 20.00 18.45 19.14 *
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 1006917_g297 with genie
ra=85.84282 (05:43:22.28) dec=25.60175 (+25:36:06.3) +/- 0.8" mag=18.87+/-0.19
dist=158.7 REFID=6 major=1.9 minor=1.2 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 57.2 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
85.8374 25.6007 18.0 -1 USNO-B1 20.14 17.85 18.87
85.8429 25.6027 3.4 -1 USNO-B1 99.99 19.66 99.99 *
85.8421 25.6061 15.8 -1 USNO-B1 20.17 18.41 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 6 in the list of sources is a candidate afterglow for 1006917_g297 with genie
ra=85.83330 (05:43:19.99) dec=25.59875 (+25:35:55.5) +/- 0.7" mag=13.10+/-0.14
dist=167.5 REFID=7 major=2.7 minor=1.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 24.5 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
85.8374 25.6007 15.1 -1 USNO-B1 20.14 17.85 18.87
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 2.7
Found 0 entries in star catalog(s) within 20" of the XRT position.
List UVOT sources within 20" of the XRT position:
There are 27498.697 counts in the bkg source region of 6093.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 4.513 counts/pixel (5-sig UL in 4" is 19.49 mag) for 1006917_g297
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 20.05, XRT distances < 13.75",
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: 1006917_627265053_201117d00h24m24s153507usUT_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(85.8307,25.5986,45")
fk5;-circle(85.8428234493931,25.6017545405816,6")
fk5;-circle(85.8332978336161,25.5987454625861,6")
image paragraph message for exposure 1 of trigger 1006917
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 GRB201117 (Swift/BAT trigger 1006917) at 00:12:35 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 217 seconds with the U filter starting
271 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 1006917 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 201117d00h24m26s182782usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1006917
-expid=627265053 -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/1006917/
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 627265053.39548 or about 2020:322:00:17:28 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 7 source(s) in Genie image catalog. Found 7 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.05 mag. Found 123 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 16% of the
Genie image region. The XRT position was OUTSIDE the star catalog search
region. The closest Genie source has ra= 85.8327 dec= 25.5763 mag=19.77
sep=119.98".
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?
627265053 271 U srclist data are not available.
627265053 271 U image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------