image overlap message for exposure 2 of trigger 1220090
uvot_overlap.pl vrs. 2010-12-20b fem started at 240314d22h42m14s528664usUT
The observation of trigger 1220090 started 2024-03-14T22:34:06.3
Examining file 1220090_g327_uvot_sky_image.fits
The exposure ID is 732148446
The exposure time is 186.918 (seconds)
The filter is U.
*** Warning -- no aspect solution was applied to the image.
consequently the calculated overlaps are questionable.
The uvot region is centered at (243.9578,-15.4061) with a roll angle of 98.0
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 (244.0400,-15.4150) with a radius of 3.000 arc min
This is 4.785 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 0.00 sq. arc min or 0.00 of the BAT error circle
The XRT error circle is centered at (243.9541,-15.4050) with a radius of 0.078 arc min
This is 0.225 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 0.019 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1220090
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240314d22h42m15s353714usUT
Observation start time is 2024-03-14T22:34:06.3
Examining file 1220090_g327_uvot_sources_image.fits
The exposure ID is 732148446
The exposure is 186.918 sec.
The bin size is 2 pixels
The filter is U
There are 4 detected source(s) for 1220090_g327
*** WARNING -- Aspect solution FAILED.
Results need to be checked by, for example, blinking image with DS9.
Star catalogs centered at 243.9734 , -15.4122 with radius 2.00 arc min.
n_usno: 97 n_gsc: 84
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.7882
RA DEC Mag Color
bright star 0: 243.98404 (16:15:56.17) -15.42813 (-15:25:41.3) 11.79 GSC-F
Found 4 entries without IDs and 1 entries that are acceptable afterglow candidates for 1220090_g327.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=244.0400 (16:16:09.60) DEC=-15.4150 (-15:24:54.0)
XRT distances are from RA=243.9541 (16:15:48.98) DEC=-15.4050 (-15:24:18.0)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1220090_g327 with genie
ra=243.98442 (16:15:56.26) dec=-15.40719 (-15:24:25.9) +/- 0.8" mag=18.50+/-0.18
dist=105.6 REFID=2 major=0.9 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 194.9 arc sec from the BAT position.
This source is near the edge of image (0.955)
Found 9 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
243.9837 -15.4095 8.8 -1 USNO-B1 99.99 18.69 99.99 *
243.9840 -15.4095 8.4 -1 USNO-B1 99.99 18.83 99.99 *
243.9886 -15.4092 16.3 -1 USNO-B1 16.57 15.45 15.95 *
243.9893 -15.4074 17.0 -1 USNO-B1 20.91 19.52 20.13 *
243.9828 -15.4091 8.9 -1 GSC2.3 20.09 99.99 99.99 *
243.9840 -15.4103 11.3 -1 GSC2.3 19.95 99.99 99.99 *
243.9828 -15.4039 13.0 -1 GSC2.3 19.97 99.99 99.99 *
243.9886 -15.4092 16.1 -1 GSC2.3 15.48 16.73 99.99 *
243.9900 -15.4066 19.4 -1 GSC2.3 19.75 21.07 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
Found 7 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
243.9571 -15.4078 14.4 -1 USNO-B1 19.70 18.72 19.16
243.9587 -15.4029 17.8 -1 USNO-B1 20.72 18.85 19.68
243.9549 -15.4098 17.7 -1 USNO-B1 19.42 18.81 19.08
243.9547 -15.4066 6.3 -1 USNO-B1 17.62 18.48 18.10
243.9545 -15.4064 5.1 -1 USNO-B1 17.48 18.53 18.06
243.9540 -15.4045 1.8 -1 USNO-B1 18.00 19.57 18.87
243.9570 -15.4077 14.0 -1 GSC2.3 18.67 19.78 99.99
The closest star is 1.80" away.
List UVOT sources within 20" of the XRT position:
There are 20781.639 counts in the bkg source region of 6143.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 3.383 counts/pixel (5-sig UL in 4" is 19.49 mag) for 1220090_g327
There are 690.36774 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 3.487 counts/pixel for 1220090_g327
There are 4092.8469 counts in the xrt_bkg source region of 1242.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 3.295 counts/pixel (5-sig UL in 4" is 19.50 mag) for 1220090_g327
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 20.04, 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: 1220090_732148446_240314d22h42m15s353714usUT_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(243.9578,-15.4061,45")
fk5;-circle(243.96240543852,-15.4145231386074,6")
fk5;-circle(243.96605258453,-15.415775566314,6")
Region file: 1220090_732148446_240314d22h42m15s353714usUT_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(243.95408,-15.40500,8")
Region file: 1220090_732148446_240314d22h42m15s353714usUT_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(243.95408,-15.40500,25")
fk5;-circle(243.95408,-15.40500,15")
image paragraph message for exposure 2 of trigger 1220090
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 GRB240314 (Swift/BAT trigger 1220090) at 22:28:38 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 187 seconds with the U filter starting
294 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 0.255.
------- notes for trigger 1220090 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240314d22h42m17s643816usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1220090
-expid=732148446 -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/1220090/
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 732148446.25262 or about 2024:074:22:34:01 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 4 source(s) in Genie image catalog. Found 4 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.04 mag. Found 93 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 16% of the
Genie image region. The closest Genie source has ra= 243.9624 dec= -15.4145
mag=19.87 sep=44.83".
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?
732148446 294 U srclist data are not available.
732148446 294 U image found no candidates.
List afterglow candidates for other finding charts.
732148286 134 ? srclist data are not available.
732148286 134 WHITE image found no candidates.
------- Tokens for Quick GCN -------