image overlap message for exposure 2 of trigger 1210276
uvot_overlap.pl vrs. 2010-12-20b fem started at 240124d03h47m26s238912usUT
The observation of trigger 1210276 started 2024-01-23T11:20:43.7
Examining file ./1210276_g896_uvot_sky_image.fits
The exposure ID is 727701643
The exposure time is 61.460 (seconds)
The filter is WHITE.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
The uvot region is centered at (199.3540,60.6193) with a roll angle of 86.1
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 (199.3190,60.6320) with a radius of 3.000 arc min
This is 1.282 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 7.16 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (199.3486,60.6185) with a radius of 0.035 arc min
This is 0.164 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 0.004 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1210276
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240124d03h47m30s686435usUT
Observation start time is 2024-01-23T11:20:43.7
Examining file ./1210276_g896_uvot_sources_image.fits
The exposure ID is 727701643
The exposure is 61.460 sec.
The bin size is 2 pixels
The filter is WHITE
There are 2 detected source(s) for 1210276_g896
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 199.3413 , 60.6303 with radius 2.00 arc min.
n_usno: 41 n_gsc: 41
Bright star catalog has no entries brighter than 12 mag
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1210276_g896.
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=199.3190 (13:17:16.56) DEC=60.6320 (+60:37:55.2)
XRT distances are from RA=199.3486 (13:17:23.67) DEC=60.6185 (+60:37:06.6)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1210276_g896 with genie
ra=199.34582 (13:17:23.00) dec=60.61807 (+60:37:05.0) +/- 0.8" mag=18.49+/-0.17
dist=5.2 REFID=1 major=1.9 minor=1.2 flag=0
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
199.3540 60.6215 19.1 -1 USNO-B1 21.45 99.99 99.99
199.3423 60.6140 16.0 -1 GSC2.3 20.08 22.35 99.99
*** unacceptable major profile of 1.9
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1210276_g896 with genie
ra=199.33675 (13:17:20.82) dec=60.64245 (+60:38:32.8) +/- 0.8" mag=18.56+/-0.18
dist=88.7 REFID=2 major=1.4 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 49.0 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
199.3468 60.6404 19.3 -1 USNO-B1 20.44 20.10 20.25
199.3394 60.6424 4.8 -1 USNO-B1 17.78 16.16 16.88 *
199.3347 60.6474 18.1 -1 USNO-B1 17.52 15.33 16.30
199.3466 60.6401 19.4 -1 GSC2.3 19.56 20.73 99.99
199.3396 60.6423 5.1 -1 GSC2.3 16.24 17.85 17.04 *
199.3348 60.6473 17.7 -1 GSC2.3 15.28 17.42 16.18
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 3 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
199.3540 60.6215 14.5 -1 USNO-B1 21.45 99.99 99.99
199.3541 60.6219 15.7 -1 GSC2.3 99.99 22.10 99.99
199.3423 60.6140 19.8 -1 GSC2.3 20.08 22.35 99.99
The closest star is 14.49" away.
List UVOT sources within 20" of the XRT position:
Unmatched source ra=199.34582 (13:17:23.00) dec=60.61807 (+60:37:05.0) +/- 0.8" mag=18.49+/-0.17 dist=5.2 REFID=1 flag=0
There are 81611.844 counts in the bkg source region of 6197.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 13.170 counts/pixel (5-sig UL in 4" is 18.98 mag) for 1210276_g896
There are 2858.8105 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 14.294 counts/pixel for 1210276_g896
There are 16314.858 counts in the xrt_bkg source region of 1251.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 13.041 counts/pixel (5-sig UL in 4" is 18.99 mag) for 1210276_g896
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 19.54, 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: 1210276_727701643_240124d03h47m30s686435usUT_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(199.3540,60.6193,45")
fk5;-circle(199.345823393406,60.6180661943187,6")
Region file: 1210276_727701643_240124d03h47m30s686435usUT_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(199.34862,60.61850,8")
Region file: 1210276_727701643_240124d03h47m30s686435usUT_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(199.34862,60.61850,25")
fk5;-circle(199.34862,60.61850,15")
image paragraph message for exposure 2 of trigger 1210276
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.
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 GRB240123 (Swift/BAT trigger 1210276) at 11:05:46 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 61 seconds with the White filter
starting 864 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 expected extinction corresponding to E(B-V) of 0.013.
------- notes for trigger 1210276 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240124d03h47m31s926571usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1210276
-expid=727701643 -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/1210276/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 727701643.70214 or about 2024:023:11:20:38 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 2 source(s) in Genie image catalog. 1 source(s) are within 20.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
19.54 mag. Found 41 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 7% of the Genie image region.
Found 1 Genie source(s) within 20.0" of the XRT position. The brightest such
source has ra= 199.3458 dec= 60.6181 mag=18.49 sep=5.18". The closest Genie
source has ra= 199.3458 dec= 60.6181 mag=18.49 sep=5.18".
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 61 seconds with the White filter
starting 864 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 13:17:23.00 = 199.34582
DEC(J2000) = +60:37:05.1 = 60.61807
with a 90%-confidence error radius of about 0.80 arc sec. This position is 5.18
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.49 with a 1-sigma error of about 0.17. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.013.
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?
727701643 863 WHITE srclist data are not available.
727701643 863 WHITE image found no candidates.
List afterglow candidates for other finding charts.
727700931 151 ? srclist data are not available.
727700931 151 WHITE image found no candidates.
------- Tokens for Quick GCN -------