image overlap message for exposure 1 of trigger 1228797
uvot_overlap.pl vrs. 2010-12-20b fem started at 240516d03h42m19s455792usUT
The observation of trigger 1228797 started 2024-05-16T03:39:32.4
Examining file 1228797_g183_uvot_sky_image.fits
The exposure ID is 737523572
The exposure time is 2.340 (seconds)
The filter is WHITE.
The uvot region is centered at (212.7981,-63.4947) with a roll angle of 207.4
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 (212.7700,-63.5050) with a radius of 3.000 arc min
This is 0.975 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 (212.8071,-63.4878) with a radius of 0.102 arc min
This is 0.477 arc min from the center of the uvot region
The area of the XRT error circle is 0.032 sq. arc min
The UVOT/XRT overlap is 0.032 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1228797
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240516d03h42m20s650009usUT
Observation start time is 2024-05-16T03:39:32.4
Examining file 1228797_g183_uvot_catalog_image.fits
The exposure ID is 737523572
The exposure is 2.340 sec.
The bin size is 2 pixels
The filter is WHITE
There are 30 detected source(s) for 1228797_g183
Aspect correction adds -0.00347 degrees (-0.833 sec of time = -5.57 arc sec) to RA
Aspect correction adds -0.00223 degrees (-8.04 arcsec) to Dec
Total aspect correction is 9.78 arcsec
Star catalogs centered at 212.7987 , -63.4983 with radius 2.69 arc min.
n_usno: 508 n_gsc: 638
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.885
RA DEC Mag Color
bright star 0: 212.82065 (14:11:16.96) -63.47828 (-63:28:41.8) 11.88 GSC-V
Mean distance difference (CAT_DELTA) for 29 matched entries is 0.993" for 1228797_g183
Mean and std. dev of mag. difference (MAG_DELTA) are 1.561 and 0.653 for 1228797_g183
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1228797_g183.
Acceptable entries have no ID, XRT distances < 15", 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=212.7700 (14:11:04.80) DEC=-63.5050 (-63:30:18.0)
XRT distances are from RA=212.8071 (14:11:13.70) DEC=-63.4878 (-63:29:16.1)
-----------------
Entry 15 in the list of sources is a candidate afterglow for 1228797_g183 with genie
ra=212.77084 (14:11:05.00) dec=-63.49371 (-63:29:37.4) +/- 0.9" mag=17.14+/-0.24
dist=62.0 REFID=18 major=0.9 minor=0.6 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 40.7 arc sec from the BAT position.
Found 11 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 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
212.7802 -63.4961 17.3 -1 USNO-B1 17.77 17.23 17.47
212.7697 -63.4957 7.6 -1 USNO-B1 17.00 15.50 16.16
212.7705 -63.4941 1.6 -1 USNO-B1 16.44 14.91 15.59 *
212.7698 -63.4948 4.2 -1 USNO-B1 99.99 14.89 99.99
212.7662 -63.4968 13.5 -1 USNO-B1 18.88 18.18 18.49
212.7659 -63.4950 9.3 -1 USNO-B1 17.78 16.36 16.99
212.7801 -63.4961 17.1 -1 GSC2.3 99.99 99.99 99.99
212.7822 -63.4916 19.7 -1 GSC2.3 99.99 99.99 99.99
212.7693 -63.4959 8.4 -1 GSC2.3 16.49 99.99 17.51
212.7704 -63.4937 0.7 -1 GSC2.3 15.70 99.99 16.17 *
212.7656 -63.4949 9.4 -1 GSC2.3 16.98 99.99 17.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 18 in the list of sources is a candidate afterglow for 1228797_g183 with genie
ra=212.76898 (14:11:04.56) dec=-63.47918 (-63:28:45.0) +/- 1.4" mag=18.52+/-0.45
dist=68.7 REFID=6 major=0.7 minor=0.6 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 93.0 arc sec from the BAT position.
This source is near the edge of image (0.906)
Found 22 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
212.7696 -63.4847 19.7 -1 USNO-B1 18.35 17.66 17.97
212.7707 -63.4830 13.9 -1 USNO-B1 18.16 17.90 18.02
212.7781 -63.4807 15.6 -1 USNO-B1 17.04 16.00 16.46
212.7710 -63.4816 9.4 -1 USNO-B1 99.99 17.36 99.99
212.7721 -63.4808 7.7 -1 USNO-B1 18.30 16.69 17.40
212.7677 -63.4790 2.1 -1 USNO-B1 99.99 14.68 99.99 *
212.7677 -63.4785 3.3 -1 USNO-B1 15.14 13.32 14.13 *
212.7677 -63.4775 6.2 -1 USNO-B1 99.99 15.12 99.99
212.7607 -63.4799 13.6 -1 USNO-B1 18.92 17.04 17.87
212.7707 -63.4744 17.4 -1 USNO-B1 17.42 16.57 16.95
212.7576 -63.4780 18.8 -1 USNO-B1 18.46 16.66 17.46
212.7731 -63.4836 17.4 -1 GSC2.3 99.99 99.99 99.99
212.7777 -63.4806 15.0 -1 GSC2.3 16.36 99.99 16.86
212.7706 -63.4819 10.2 -1 GSC2.3 99.99 99.99 99.99
212.7725 -63.4808 8.1 -1 GSC2.3 99.99 99.99 99.99
212.7763 -63.4776 13.1 -1 GSC2.3 99.99 99.99 99.99
212.7682 -63.4792 1.3 -1 GSC2.3 15.31 99.99 15.90 *
212.7723 -63.4772 9.0 -1 GSC2.3 16.83 99.99 17.84
212.7670 -63.4776 6.6 -1 GSC2.3 15.22 99.99 15.56
212.7602 -63.4799 14.4 -1 GSC2.3 99.99 99.99 99.99
212.7705 -63.4744 17.5 -1 GSC2.3 16.55 99.99 17.16
212.7572 -63.4779 19.5 -1 GSC2.3 16.53 99.99 17.62
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 1228797_g183 with genie
ra=212.74860 (14:10:59.66) dec=-63.48712 (-63:29:13.6) +/- 0.8" mag=16.92+/-0.23
dist=94.0 REFID=11 major=0.8 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 73.0 arc sec from the BAT position.
Found 13 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
212.7609 -63.4875 19.8 -1 USNO-B1 18.43 18.41 18.42
212.7533 -63.4869 7.6 -1 USNO-B1 17.95 16.67 17.24
212.7555 -63.4841 15.5 -1 USNO-B1 19.08 18.67 18.85
212.7489 -63.4876 1.8 -1 USNO-B1 16.61 14.77 15.59 *
212.7530 -63.4842 12.8 -1 USNO-B1 17.98 16.70 17.27
212.7445 -63.4906 14.2 -1 USNO-B1 17.41 16.34 16.82
212.7495 -63.4845 9.4 -1 USNO-B1 18.43 18.48 18.46
212.7417 -63.4917 19.8 -1 USNO-B1 17.30 16.21 16.69
212.7402 -63.4899 16.8 -1 USNO-B1 99.99 17.66 99.99
212.7530 -63.4843 12.3 -1 GSC2.3 99.99 99.99 99.99
212.7482 -63.4873 1.0 -1 GSC2.3 14.54 99.99 15.34 *
212.7447 -63.4906 13.9 -1 GSC2.3 16.51 99.99 17.17
212.7401 -63.4899 16.9 -1 GSC2.3 99.99 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 28 in the list of sources is a candidate afterglow for 1228797_g183 with genie
ra=212.85564 (14:11:25.35) dec=-63.50390 (-63:30:14.0) +/- 0.9" mag=17.21+/-0.25
dist=97.1 REFID=26 major=0.5 minor=0.4 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 137.6 arc sec from the BAT position.
This source is near the edge of image (0.984)
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
212.8506 -63.5017 11.3 -1 USNO-B1 99.99 20.51 99.99
212.8503 -63.5042 8.6 -1 USNO-B1 18.94 21.07 20.12
212.8562 -63.5044 2.1 -1 USNO-B1 15.23 14.24 14.68 *
212.8557 -63.5078 14.1 -1 USNO-B1 99.99 17.84 99.99
212.8504 -63.5018 11.4 -1 GSC2.3 99.99 99.99 99.99
212.8560 -63.5044 1.8 -1 GSC2.3 13.87 99.99 14.27 *
212.8555 -63.5079 14.4 -1 GSC2.3 99.99 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 1 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
212.8028 -63.4887 7.6 -1 GSC2.3 99.99 99.99 99.99
The closest star is 7.65" away.
List UVOT sources within 10" of the XRT position:
There are 1370.3202 counts in the bkg source region of 5514.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 0.249 counts/pixel (5-sig UL in 4" is 17.59 mag) for 1228797_g183
There are 50.926727 counts in the xrt source region of 205.00000 pixels.
Rate in xrt region with 8 arcsec radius is 0.248 counts/pixel for 1228797_g183
There are 223.02515 counts in the xrt_bkg source region of 896.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 0.249 counts/pixel (5-sig UL in 4" is 17.59 mag) for 1228797_g183
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 18.14, XRT distances < 15",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1228797_737523572_240516d03h42m20s650009usUT_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(212.7981,-63.4947,45")
fk5;-circle(212.799712634263,-63.4915730542176,6")
fk5;-circle(212.797127352205,-63.4850645650618,6")
fk5;-circle(212.817829753247,-63.4919745210254,6")
fk5;-circle(212.827106203028,-63.4904908141386,6")
fk5;-circle(212.793952910789,-63.4966369973145,6")
fk5;-circle(212.789936113314,-63.4974585308699,6")
fk5;-circle(212.80505632516,-63.5007314377325,6")
fk5;-circle(212.770843915834,-63.4937118820637,6")
fk5;-circle(212.793394431495,-63.5069156208185,6")
fk5;-circle(212.77618501152,-63.5040162002817,6")
Region file: 1228797_737523572_240516d03h42m20s650009usUT_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(212.8071,-63.4878,8")
Region file: 1228797_737523572_240516d03h42m20s650009usUT_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(212.8071,-63.4878,25")
fk5;-circle(212.8071,-63.4878,15")
fk5;-circle(212.799712634263,-63.4915730542176,6")
fk5;-circle(212.797127352205,-63.4850645650618,6")
fk5;-circle(212.817829753247,-63.4919745210254,6")
fk5;-circle(212.811530044,-63.4814366296212,6")
fk5;-circle(212.807112396545,-63.4801088224732,6")
image paragraph message for exposure 1 of trigger 1228797
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
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 GRB240516 (Swift/BAT trigger 1228797) at 03:36:28 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 2 seconds with the White filter
starting 150 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of
the XRT error circle. Because of the density of catalogued stars, further
analysis is required to report an upper limit for any afterglow in the
sub-image. 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 1228797 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240516d03h42m22s872627usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1228797
-expid=737523572 -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/1228797/
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 737523572.44294 or about 2024:137:03:39:27 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 30 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 18.14 mag. Found 504 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
48% of the Genie image region.
Genie image analysis:
Found 1370.3 counts in the large background region of 5514.0 pixels or a rate
of 0.249 counts/pixel in a radius of 45.0 arcsec. Based on this background, the
typical 5-sigma UL at a random point in the Genie image is 17.24 mag. for a
4-arcsec aperture.
Found 50.9 counts in the XRT position region of 205.0 pixels or a rate of 0.248
counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.061 +/- 3.955 (1-sigma) cps. The
3-sigma UL at the XRT position is 11.866 cps or 16.92 mag. The closest Genie
source has ra= 212.7997 dec= -63.4916 mag=16.95 sep=18.04".
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?
737523572 150 WHITE srclist data are not available.
737523572 150 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------