image overlap message for exposure 3 of trigger 1215859
uvot_overlap.pl vrs. 2010-12-20b fem started at 240217d18h40m03s673257usUT
The observation of trigger 1215859 started 2024-02-17T18:34:58.4
Examining file 1215859_g890_uvot_sky_image.fits
The exposure ID is 729887698
The exposure time is 110.301 (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 (244.8087,-15.4878) with a roll angle of 100.5
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 (244.7350,-15.4840) with a radius of 3.000 arc min
This is 4.266 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 0.36 sq. arc min or 0.01 of the BAT error circle
The XRT error circle is centered at (244.8235,-15.5059) with a radius of 0.078 arc min
This is 1.384 arc min from the center of the uvot region
The area of the XRT error circle is 0.019 sq. arc min
The UVOT/XRT overlap is 0.008 sq. arc min or 0.41 of the XRT error circle
image afterglow message for exposure 3 of trigger 1215859
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240217d18h40m04s908529usUT
Observation start time is 2024-02-17T18:34:58.4
Examining file 1215859_g890_uvot_sources_image.fits
The exposure ID is 729887698
The exposure is 110.301 sec.
The bin size is 2 pixels
The filter is WHITE
There are 18 detected source(s) for 1215859_g890
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 244.8109 , -15.4798 with radius 2.40 arc min.
n_usno: 99 n_gsc: 86
Bright star catalog has no entries brighter than 12 mag
Found 18 entries without IDs and 3 entries that are acceptable afterglow candidates for 1215859_g890.
Acceptable entries have no ID, XRT distances < 11.75", 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=244.7350 (16:18:56.40) DEC=-15.4840 (-15:29:02.4)
XRT distances are from RA=244.8235 (16:19:17.64) DEC=-15.5059 (-15:30:21.2)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1215859_g890 with genie
ra=244.79275 (16:19:10.26) dec=-15.47363 (-15:28:25.1) +/- 0.9" mag=19.80+/-0.21
dist=157.7 REFID=5 major=1.2 minor=0.6 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 203.8 arc sec from the BAT position.
This source is near the edge of image (0.931)
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
244.7908 -15.4686 19.5 -1 USNO-B1 20.55 19.25 19.83 *
244.7906 -15.4685 19.9 -1 GSC2.3 19.35 20.57 99.99 *
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 7 in the list of sources is a candidate afterglow for 1215859_g890 with genie
ra=244.78667 (16:19:08.80) dec=-15.48052 (-15:28:49.9) +/- 0.8" mag=18.99+/-0.16
dist=157.1 REFID=8 major=2.1 minor=0.8 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 179.7 arc sec from the BAT position.
This source is near the edge of image (0.940)
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
244.7909 -15.4791 15.5 -1 USNO-B1 21.20 19.38 20.19 *
244.7882 -15.4783 9.7 -1 USNO-B1 18.94 16.53 17.60 *
244.7910 -15.4792 15.7 -1 GSC2.3 20.07 21.80 99.99 *
244.7881 -15.4782 9.6 -1 GSC2.3 16.79 18.80 99.99 *
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 8 in the list of sources is a candidate afterglow for 1215859_g890 with genie
ra=244.79128 (16:19:09.91) dec=-15.48659 (-15:29:11.7) +/- 0.8" mag=18.73+/-0.16
dist=131.6 REFID=9 major=2.0 minor=0.9 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 195.5 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
244.7930 -15.4821 17.3 -1 USNO-B1 18.61 17.55 18.02
244.7935 -15.4875 8.5 -1 USNO-B1 20.48 19.32 19.84 *
244.7920 -15.4882 6.3 -1 USNO-B1 20.98 19.60 20.22 *
244.7929 -15.4820 17.3 -1 GSC2.3 17.59 18.76 99.99
244.7935 -15.4875 8.3 -1 GSC2.3 18.97 20.32 99.99 *
244.7920 -15.4881 6.1 -1 GSC2.3 19.27 21.01 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
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
244.8264 -15.5024 16.2 -1 USNO-B1 20.38 19.46 19.87
244.8264 -15.5023 16.3 -1 GSC2.3 19.48 20.31 99.99
The closest star is 16.16" away.
List UVOT sources within 20" of the XRT position:
There are 79642.570 counts in the bkg source region of 5891.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 13.519 counts/pixel (5-sig UL in 4" is 19.60 mag) for 1215859_g890
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 20.16, XRT distances < 11.75",
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: 1215859_729887698_240217d18h40m04s908529usUT_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(244.8087,-15.4878,45")
fk5;-circle(244.812170758413,-15.4813261938789,6")
fk5;-circle(244.811584247606,-15.4833048907563,6")
fk5;-circle(244.806395558691,-15.4878984537508,6")
fk5;-circle(244.805130807326,-15.4905787983863,6")
fk5;-circle(244.82129036732,-15.4946230723839,6")
image paragraph message for exposure 3 of trigger 1215859
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.
------ Start for Possible Stand-alone Circular ----
In response to GRB240217 (Swift/BAT trigger 1215859) at 18:20:07 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 110 seconds with the White filter
starting 858 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 0.332.
------- notes for trigger 1215859 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240217d18h40m07s321627usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1215859
-expid=729887698 -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/1215859/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 729887698.40526 or about 2024:048:18:34:53 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. Found 18 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.16 mag. Found 95 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
11% of the Genie image region. The closest Genie source has ra= 244.8213 dec=
-15.4946 mag=17.74 sep=41.28".
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?
729887698 858 WHITE srclist data are not available.
729887698 858 WHITE image found no candidates.
List afterglow candidates for other finding charts.
729886985 145 ? srclist data are not available.
729886985 145 WHITE image found no candidates.
729887143 303 ? srclist data are not available.
729887143 303 U image found no candidates.
------- Tokens for Quick GCN -------