image overlap message for exposure 3 of trigger 1218701
uvot_overlap.pl vrs. 2010-12-20b fem started at 240305d05h41m00s343526usUT
The observation of trigger 1218701 started 2024-03-05T05:36:30.2
Examining file 1218701_g4967_uvot_sky_image.fits
The exposure ID is 731309790
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (229.7169,-57.3433) with a roll angle of 115.8
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 (229.7050,-57.3430) with a radius of 3.000 arc min
This is 0.385 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 (229.7317,-57.3641) with a radius of 0.098 arc min
This is 1.335 arc min from the center of the uvot region
The area of the XRT error circle is 0.030 sq. arc min
The UVOT/XRT overlap is 0.024 sq. arc min or 0.79 of the XRT error circle
image afterglow message for exposure 3 of trigger 1218701
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240305d05h41m01s218774usUT
Observation start time is 2024-03-05T05:36:30.2
Examining file 1218701_g4967_uvot_catalog_image.fits
The exposure ID is 731309790
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 13 detected source(s) for 1218701_g4967
Aspect correction adds 0.00245 degrees (0.588 sec of time = 4.77 arc sec) to RA
Aspect correction adds -0.00074 degrees (-2.67 arcsec) to Dec
Total aspect correction is 5.47 arcsec
Star catalogs centered at 229.7188 , -57.3474 with radius 2.68 arc min.
n_usno: 210 n_gsc: 564
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.39094
RA DEC Mag Color
bright star 0: 229.65541 (15:18:37.30) -57.37598 (-57:22:33.5) 11.39 USNO-V
Mean distance difference (CAT_DELTA) for 12 matched entries is 0.743" for 1218701_g4967
Mean and std. dev of mag. difference (MAG_DELTA) are 1.799 and 0.741 for 1218701_g4967
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1218701_g4967.
Acceptable entries have no ID, XRT distances < 14.75", 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=229.7050 (15:18:49.20) DEC=-57.3430 (-57:20:34.8)
XRT distances are from RA=229.7317 (15:18:55.61) DEC=-57.3641 (-57:21:50.8)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1218701_g4967 with genie
ra=229.72893 (15:18:54.94) dec=-57.36434 (-57:21:51.6) +/- 0.6" mag=19.20+/-0.16
dist=5.4 REFID=13 major=1.0 minor=0.9 flag=3 (neighbor+blended)
This source is near the edge of image (0.936)
Found 8 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
229.7281 -57.3648 2.3 -1 USNO-B1 17.87 16.37 17.03 *
229.7334 -57.3647 8.7 -1 USNO-B1 99.99 18.13 99.99
229.7337 -57.3647 9.4 -1 USNO-B1 99.99 18.29 99.99
229.7336 -57.3668 12.5 -1 USNO-B1 20.68 19.93 20.26
229.7245 -57.3636 8.9 -1 GSC2.3 99.99 16.43 99.99
229.7280 -57.3648 2.5 -1 GSC2.3 16.30 18.04 16.83 *
229.7337 -57.3645 9.3 -1 GSC2.3 17.69 99.99 99.99
229.7337 -57.3668 12.8 -1 GSC2.3 19.11 21.45 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
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1218701_g4967 with genie
ra=229.72657 (15:18:54.38) dec=-57.36482 (-57:21:53.3) +/- 0.7" mag=19.60+/-0.17
dist=10.3 REFID=1 major=1.6 minor=1.3 flag=3 (neighbor+blended)
This source is near the edge of image (0.920)
Found 8 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
229.7281 -57.3648 3.1 -1 USNO-B1 17.87 16.37 17.03 *
229.7334 -57.3647 13.3 -1 USNO-B1 99.99 18.13 99.99
229.7337 -57.3647 13.9 -1 USNO-B1 99.99 18.29 99.99
229.7336 -57.3668 15.3 -1 USNO-B1 20.68 19.93 20.26
229.7245 -57.3636 5.8 -1 GSC2.3 99.99 16.43 99.99
229.7280 -57.3648 2.7 -1 GSC2.3 16.30 18.04 16.83 *
229.7337 -57.3645 13.9 -1 GSC2.3 17.69 99.99 99.99
229.7337 -57.3668 15.6 -1 GSC2.3 19.11 21.45 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 5 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
229.7281 -57.3648 7.4 -1 USNO-B1 17.87 16.37 17.03
229.7334 -57.3647 3.9 -1 USNO-B1 99.99 18.13 99.99
229.7337 -57.3647 4.5 -1 USNO-B1 99.99 18.29 99.99
229.7280 -57.3648 7.7 -1 GSC2.3 16.30 18.04 16.83
229.7337 -57.3645 4.2 -1 GSC2.3 17.69 99.99 99.99
The closest star is 3.86" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=229.72893 (15:18:54.94) dec=-57.36434 (-57:21:51.6) +/- 0.6" mag=19.20+/-0.16 dist=5.4 REFID=13 flag=3
There are 68534.086 counts in the bkg source region of 5874.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 11.667 counts/pixel (5-sig UL in 4" is 20.02 mag) for 1218701_g4967
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 20.57, XRT distances < 14.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1218701_731309790_240305d05h41m01s218774usUT_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(229.7169,-57.3433,45")
fk5;-circle(229.725736113453,-57.3553142631293,6")
fk5;-circle(229.717188704337,-57.3540304075099,6")
fk5;-circle(229.729579891656,-57.3460320149831,6")
fk5;-circle(229.740020964734,-57.3387511309871,6")
fk5;-circle(229.709071671401,-57.3381312671683,6")
fk5;-circle(229.721106951931,-57.3306496416042,6")
image paragraph message for exposure 3 of trigger 1218701
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: partial overlap
SRCLIST PROBLEM: no srclist afterglow info
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
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 GRB240305 (Swift/BAT trigger 1218701) at 04:13:42 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 4934 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 79%
of the XRT error circle. The typical 3-sigma upper limit has been about 19.6
mag. 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 1218701 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240305d05h41m02s381075usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1218701
-expid=731309790 -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/1218701/
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 731309790.23974 or about 2024:065:05:36:25 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 13 source(s) in Genie image catalog. 1 source(s) are within 10.0" 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
20.57 mag. Found 206 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 19% of the Genie image region.
Genie image analysis:
Found 68534.1 counts in the large background region of 5874.0 pixels or a rate
of 11.667 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 19.84 mag. for a
4-arcsec aperture.
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 229.7289 dec= -57.3643 mag=19.20 sep=5.45". The closest Genie
source has ra= 229.7289 dec= -57.3643 mag=19.20 sep=5.45".
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 150 seconds with the White filter
starting 4934 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 15:18:54.94 = 229.72893
DEC(J2000) = -57:21:51.6 = -57.36434
with a 90%-confidence error radius of about 0.65 arc sec. This position is 5.45
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.20 with a 1-sigma error of about 0.16. No correction has been made for the
large, but uncertain, extinction expected.
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?
731309790 4934 WHITE srclist data are not available.
731309790 4934 WHITE image found no candidates.
List afterglow candidates for other finding charts.
731305139 283 ? srclist data are not available.
731305139 283 U image found no candidates.
731305723 867 U srclist found no candidates.
731305723 867 U image found no candidates.
------- Tokens for Quick GCN -------