srclist overlap message for exposure 2 of trigger 1070298
uvot_overlap.pl vrs. 2010-12-20b fem started at 210825d07h16m45s726482usUT
The observation of trigger 1070298 started 2021-08-25T06:58:52.8
Examining file ./1070298_g324_uvot_sky_srclist.fits
The exposure ID is 651567532
The exposure time is undefined.
The filter is U.
The uvot region is centered at (238.8229,-54.0693) with a roll angle of 280.7
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (238.8360,-54.0700) with a radius of 3.000 arc min
This is 0.461 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 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (238.7856,-54.0615) with a radius of 0.032 arc min
This is 1.397 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1070298
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210825d07h16m58s617625usUT
Observation start time is 2021-08-25T06:58:52.8
Examining file ./1070298_g324_uvot_catalog_srclist.fits
The exposure ID is 651567532
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1070298_g324
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1070298_g324 has mag 18.30
Aspect correction adds -0.00454 degrees (-1.090 sec of time = -9.59 arc sec) to RA
Aspect correction adds -0.00043 degrees (-1.56 arcsec) to Dec
Total aspect correction is 9.72 arcsec
Star catalogs centered at 238.8247 , -54.0710 with radius 8.49 arc min.
n_usno: 3721 n_gsc: 0
*** WARNING -- bright star catalog has 15 entries brighter than 12 mag
The brightest has mag 9.25418
RA DEC Mag Color
bright star 0: 238.80655 (15:55:13.57) -54.06409 (-54:03:50.7) 11.70 USNO-R
bright star 1: 238.79818 (15:55:11.56) -54.07666 (-54:04:36.0) 10.71 USNO-V
bright star 2: 238.85814 (15:55:25.95) -54.07434 (-54:04:27.6) 11.40 USNO-V
bright star 3: 238.89704 (15:55:35.29) -54.12468 (-54:07:28.9) 10.56 USNO-V
bright star 4: 238.76109 (15:55:02.66) -54.00243 (-54:00:08.7) 9.25 USNO-V
bright star 5: 238.95935 (15:55:50.24) -54.05451 (-54:03:16.2) 11.43 USNO-V
bright star 6: 238.65697 (15:54:37.67) -54.02573 (-54:01:32.6) 9.59 USNO-V
bright star 7: 239.01626 (15:56:03.90) -54.08814 (-54:05:17.3) 11.49 USNO-V
bright star 8: 238.89021 (15:55:33.65) -53.96363 (-53:57:49.1) 10.44 USNO-V
bright star 9: 238.71014 (15:54:50.43) -53.96361 (-53:57:49.0) 10.29 USNO-V
bright star 10: 238.67187 (15:54:41.25) -53.97750 (-53:58:39.0) 11.80 USNO-V
bright star 11: 239.03749 (15:56:09.00) -54.02342 (-54:01:24.3) 11.02 USNO-V
bright star 12: 239.05580 (15:56:13.39) -54.04835 (-54:02:54.0) 10.81 USNO-V
bright star 13: 239.05531 (15:56:13.28) -54.03887 (-54:02:19.9) 11.94 USNO-V
bright star 14: 239.05541 (15:56:13.30) -54.03799 (-54:02:16.7) 11.48 USNO-V
Mean distance difference (CAT_DELTA) for 134 matched entries is 0.836" for 1070298_g324
Mean and std. dev of mag. difference (MAG_DELTA) are 2.135 and 0.724 for 1070298_g324
Found 60 entries without IDs and 4 entries that are acceptable afterglow candidates for 1070298_g324.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
44 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=238.8360 (15:55:20.64) DEC=-54.0700 (-54:04:12.0)
XRT distances are from RA=238.7856 (15:55:08.54) DEC=-54.0615 (-54:03:41.4)
*** WARNING 31 per cent of entries have no IDs.
-----------------
Entry 9 in the list of sources is a candidate afterglow for 1070298_g324 with 3x3 stamp
ra=238.88354 (15:55:32.05) dec=-54.05632 (-54:03:22.8) +/- 1.1" mag=16.81+/-0.35
dist=207.8 REFID=64
*** The position of this source is inconsistent with the XRT position.
The position is 111.9 arc sec from the BAT position.
src: 9 srclist_match has ID
src: 9 distr. of nearby unmatched sources: 1 0 0 0 0
Found 9 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
238.8757 -54.0581 17.7 -1 USNO-B1 20.34 19.09 19.64
238.8784 -54.0552 11.6 -1 USNO-B1 99.99 18.24 99.99
238.8775 -54.0535 16.4 -1 USNO-B1 19.60 18.33 18.89
238.8827 -54.0592 10.5 -1 USNO-B1 19.13 17.17 18.04
238.8841 -54.0562 1.2 -1 USNO-B1 13.62 11.14 12.24 *
238.8836 -54.0555 2.8 -1 USNO-B1 18.90 11.28 14.66 *
238.8847 -54.0529 12.4 -1 USNO-B1 99.99 18.77 99.99
238.8872 -54.0549 9.3 -1 USNO-B1 99.99 18.80 99.99
238.8917 -54.0566 17.3 -1 USNO-B1 18.95 17.82 18.32
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 22 in the list of sources is a candidate afterglow for 1070298_g324 with 1x1 stamp
ra=238.79812 (15:55:11.55) dec=-54.11297 (-54:06:46.7) +/- 1.1" mag=17.32+/-0.35
dist=187.2 REFID=171
*** The position of this source is inconsistent with the XRT position.
The position is 174.1 arc sec from the BAT position.
src: 22 distr. of nearby unmatched sources: 0 0 0 0 0
Found 5 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
238.8052 -54.1132 14.9 -1 USNO-B1 19.81 19.65 19.72
238.7904 -54.1115 17.1 -1 USNO-B1 15.64 14.93 15.24
238.7974 -54.1137 3.1 -1 USNO-B1 12.30 11.81 12.03 *
238.8020 -54.1174 18.0 -1 USNO-B1 15.86 14.82 15.28
238.7974 -54.1172 15.3 -1 USNO-B1 17.64 17.16 17.37
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 35 in the list of sources is a candidate afterglow for 1070298_g324 with 3x3 stamp
ra=238.75465 (15:55:01.12) dec=-54.09409 (-54:05:38.7) +/- 1.1" mag=15.73+/-0.35
dist=134.3 REFID=35
*** The position of this source is inconsistent with the XRT position.
The position is 192.5 arc sec from the BAT position.
src: 35 distr. of nearby unmatched sources: 2 0 0 0 0
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
238.7577 -54.0961 9.7 -1 USNO-B1 99.99 18.11 99.99
238.7544 -54.0948 2.8 -1 USNO-B1 12.86 12.38 12.59 *
238.7498 -54.0893 19.9 -1 USNO-B1 16.71 15.69 16.14
238.7538 -54.0985 16.0 -1 USNO-B1 99.99 19.53 99.99
238.7467 -54.0918 18.8 -1 USNO-B1 20.45 18.42 19.32
238.7481 -54.0941 13.9 -1 USNO-B1 19.64 18.62 19.07
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 36 in the list of sources is a candidate afterglow for 1070298_g324 with 3x3 stamp
ra=238.75463 (15:55:01.11) dec=-54.09430 (-54:05:39.5) +/- 1.1" mag=15.38+/-0.35
dist=134.9 REFID=16
*** The position of this source is inconsistent with the XRT position.
The position is 192.8 arc sec from the BAT position.
src: 36 distr. of nearby unmatched sources: 2 0 0 0 0
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
238.7577 -54.0961 9.2 -1 USNO-B1 99.99 18.11 99.99
238.7544 -54.0948 2.0 -1 USNO-B1 12.86 12.38 12.59 *
238.7538 -54.0985 15.2 -1 USNO-B1 99.99 19.53 99.99
238.7467 -54.0918 19.1 -1 USNO-B1 20.45 18.42 19.32
238.7481 -54.0941 13.8 -1 USNO-B1 19.64 18.62 19.07
238.7512 -54.0995 20.0 -1 USNO-B1 99.99 19.37 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 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
238.7890 -54.0616 7.2 -1 USNO-B1 18.27 17.10 17.62
The closest star is 7.18" away.
List UVOT sources within 10" of the XRT position:
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 18.12, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 1070298
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
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 GRB210825 (Swift/BAT trigger 1070298) at 06:53:27 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
297 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 none of the
XRT error circle. The 8'x8' region for the list of sources generated on-board
covers 100% of the XRT error circle. The list of sources is typically complete
to about 18.0 mag. No correction has been made for the large, but uncertain,
extinction expected.
------- notes for trigger 1070298 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210825d07h17m04s344649usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1070298
-expid=651567532 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1070298/
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 srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 651567532.82094 or about 2021:237:06:58:47 UT
Found 3717 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 35% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 60 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Found 24 source(s) in Genie image catalog. Found 6 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.01 mag. Found 395 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
41% of the Genie image region.
Genie image analysis:
Found 37541.0 counts in the large background region of 5806.0 pixels or a rate
of 6.466 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 19.30 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.30 mag. The closest srclist
source has ra= 238.8034 dec= -54.0628 mag=17.21 sep=37.93". The closest Genie
source has ra= 238.7817 dec= -54.0693 mag=18.77 sep=29.30".
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?
651567532 297 U srclist found no candidates.
651567532 297 U image found no candidates.
List afterglow candidates for other finding charts.
651567320 85 WHITE srclist found no candidates.
651567320 85 WHITE image found no candidates.
651568113 878 WHITE srclist found no candidates.
651568113 878 WHITE image found no candidates.
------- Tokens for Quick GCN -------