srclist overlap message for exposure 3 of trigger 1057131
uvot_overlap.pl vrs. 2010-12-20b fem started at 210621d17h27m14s408152usUT
The observation of trigger 1057131 started 2021-06-21T17:19:25.1
Examining file ./1057131_g888_uvot_sky_srclist.fits
The exposure ID is 645988765
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (238.8043,-54.0675) with a roll angle of 230.5
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 (238.8120,-54.0630) with a radius of 3.000 arc min
This is 0.383 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 (238.7865,-54.0614) with a radius of 0.032 arc min
This is 0.728 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 3 of trigger 1057131
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210621d17h27m53s118437usUT
Observation start time is 2021-06-21T17:19:25.1
Examining file ./1057131_g888_uvot_catalog_srclist.fits
The exposure ID is 645988765
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1057131_g888
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 0.389
srclist_overlap returned: xrt_overlap 0.000
Dimmest detected source in 1057131_g888 has mag 18.66
Aspect correction adds -0.00102 degrees (-0.245 sec of time = -2.16 arc sec) to RA
Aspect correction adds -0.00036 degrees (-1.30 arcsec) to Dec
Total aspect correction is 2.52 arcsec
Star catalogs centered at 238.8231 , -54.0872 with radius 7.74 arc min.
n_usno: 3185 n_gsc: 0
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 9.25418
RA DEC Mag Color
bright star 0: 238.79818 (15:55:11.56) -54.07666 (-54:04:36.0) 10.71 USNO-V
bright star 1: 238.85814 (15:55:25.95) -54.07434 (-54:04:27.6) 11.40 USNO-V
bright star 2: 238.80655 (15:55:13.57) -54.06409 (-54:03:50.7) 11.70 USNO-R
bright star 3: 238.89704 (15:55:35.29) -54.12468 (-54:07:28.9) 10.56 USNO-V
bright star 4: 238.95935 (15:55:50.24) -54.05451 (-54:03:16.2) 11.43 USNO-V
bright star 5: 238.76109 (15:55:02.66) -54.00243 (-54:00:08.7) 9.25 USNO-V
bright star 6: 239.01626 (15:56:03.90) -54.08814 (-54:05:17.3) 11.49 USNO-V
bright star 7: 238.65697 (15:54:37.67) -54.02573 (-54:01:32.6) 9.59 USNO-V
Mean distance difference (CAT_DELTA) for 163 matched entries is 0.922" for 1057131_g888
Mean and std. dev of mag. difference (MAG_DELTA) are 1.847 and 0.640 for 1057131_g888
Found 33 entries without IDs and 7 entries that are acceptable afterglow candidates for 1057131_g888.
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.
4 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=238.8120 (15:55:14.88) DEC=-54.0630 (-54:03:46.8)
XRT distances are from RA=238.7865 (15:55:08.75) DEC=-54.0614 (-54:03:40.9)
-----------------
Entry 13 in the list of sources is a candidate afterglow for 1057131_g888 with 1x1 stamp
ra=238.80586 (15:55:13.41) dec=-54.09903 (-54:05:56.5) +/- 1.1" mag=18.18+/-0.35
dist=141.6 REFID=142
*** The position of this source is inconsistent with the XRT position.
The position is 130.3 arc sec from the BAT position.
src: 13 srclist_match has ID
src: 13 distr. of nearby unmatched sources: 0 0 0 0 0
Found 10 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
238.8096 -54.0969 11.0 -1 USNO-B1 99.99 19.43 99.99
238.8065 -54.0964 9.5 -1 USNO-B1 19.86 17.91 18.77
238.8143 -54.1002 18.2 -1 USNO-B1 17.80 16.70 17.19
238.8072 -54.0996 3.4 -1 USNO-B1 18.15 17.45 17.76 *
238.8064 -54.0992 1.3 -1 USNO-B1 16.64 15.46 15.98 *
238.8062 -54.1002 4.2 -1 USNO-B1 99.99 17.77 99.99
238.7995 -54.0961 17.1 -1 USNO-B1 16.24 15.31 15.72
238.7998 -54.0966 15.5 -1 USNO-B1 18.21 15.55 16.73
238.7997 -54.0980 13.6 -1 USNO-B1 18.05 16.85 17.38
238.7982 -54.0981 16.4 -1 USNO-B1 19.79 18.99 19.35
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 20 in the list of sources is a candidate afterglow for 1057131_g888 with 3x3 stamp
ra=238.85578 (15:55:25.39) dec=-54.09458 (-54:05:40.5) +/- 1.1" mag=17.33+/-0.35
dist=189.0 REFID=82
*** The position of this source is inconsistent with the XRT position.
The position is 146.5 arc sec from the BAT position.
src: 20 srclist_match has ID
src: 20 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
238.8525 -54.0912 13.9 -1 USNO-B1 20.25 19.08 19.60
238.8511 -54.0984 16.9 -1 USNO-B1 19.54 18.27 18.83
238.8569 -54.0898 17.5 -1 USNO-B1 99.99 19.74 99.99
238.8557 -54.0950 1.6 -1 USNO-B1 14.72 13.38 13.97 *
238.8559 -54.0964 6.5 -1 USNO-B1 17.70 16.23 16.88
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 21 in the list of sources is a candidate afterglow for 1057131_g888 with 1x1 stamp
ra=238.82999 (15:55:19.20) dec=-54.10375 (-54:06:13.5) +/- 1.1" mag=18.38+/-0.35
dist=178.1 REFID=187
*** The position of this source is inconsistent with the XRT position.
The position is 151.5 arc sec from the BAT position.
src: 21 srclist_match has ID
src: 21 distr. of nearby unmatched sources: 0 0 0 0 0
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
238.8366 -54.1014 16.2 -1 USNO-B1 21.09 19.84 20.40
238.8215 -54.1036 17.9 -1 USNO-B1 99.99 19.09 99.99
238.8306 -54.1038 1.3 -1 USNO-B1 17.23 16.16 16.63 *
238.8279 -54.1047 5.6 -1 USNO-B1 19.64 18.69 19.11
238.8370 -54.1035 14.9 -1 USNO-B1 20.49 19.65 20.02
238.8332 -54.1048 7.7 -1 USNO-B1 17.03 16.05 16.49
238.8276 -54.1060 9.5 -1 USNO-B1 99.99 19.50 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
-----------------
Entry 28 in the list of sources is a candidate afterglow for 1057131_g888 with 3x3 stamp
ra=238.87734 (15:55:30.56) dec=-54.08658 (-54:05:11.7) +/- 1.1" mag=17.47+/-0.35
dist=212.3 REFID=92
*** The position of this source is inconsistent with the XRT position.
The position is 162.0 arc sec from the BAT position.
src: 28 srclist_match has ID
src: 28 distr. of nearby unmatched sources: 0 0 0 0 0
Found 10 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
238.8681 -54.0854 19.9 -1 USNO-B1 16.62 15.66 16.09
238.8688 -54.0882 19.1 -1 USNO-B1 20.20 18.12 19.04
238.8735 -54.0821 18.1 -1 USNO-B1 18.80 17.64 18.16
238.8745 -54.0841 10.8 -1 USNO-B1 99.99 18.91 99.99
238.8754 -54.0908 15.8 -1 USNO-B1 20.28 18.71 19.41
238.8782 -54.0864 1.9 -1 USNO-B1 16.24 15.21 15.66 *
238.8798 -54.0853 6.9 -1 USNO-B1 99.99 15.16 99.99
238.8801 -54.0851 7.7 -1 USNO-B1 16.24 15.43 15.79
238.8840 -54.0901 18.8 -1 USNO-B1 18.34 17.24 17.73
238.8851 -54.0877 16.8 -1 USNO-B1 18.34 17.68 17.97
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 34 in the list of sources is a candidate afterglow for 1057131_g888 with 1x1 stamp
ra=238.77756 (15:55:06.62) dec=-54.10776 (-54:06:27.9) +/- 1.1" mag=18.55+/-0.35
dist=168.1 REFID=181
*** The position of this source is inconsistent with the XRT position.
The position is 176.8 arc sec from the BAT position.
src: 34 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
238.7834 -54.1083 12.5 -1 USNO-B1 18.27 16.38 17.22
238.7745 -54.1038 15.8 -1 USNO-B1 18.53 17.42 17.91
238.7784 -54.1083 2.6 -1 USNO-B1 16.96 15.71 16.26 *
238.7784 -54.1087 3.8 -1 USNO-B1 99.99 18.47 99.99 *
238.7773 -54.1120 15.3 -1 USNO-B1 99.99 18.34 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
-----------------
Entry 41 in the list of sources is a candidate afterglow for 1057131_g888 with 3x3 stamp
ra=238.80675 (15:55:13.62) dec=-54.11762 (-54:07:03.4) +/- 1.1" mag=16.50+/-0.35
dist=207.0 REFID=37
*** The position of this source is inconsistent with the XRT position.
The position is 196.9 arc sec from the BAT position.
src: 41 distr. of nearby unmatched sources: 0 0 0 0 0
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
238.8052 -54.1132 16.2 -1 USNO-B1 19.81 19.65 19.72
238.8116 -54.1175 10.3 -1 USNO-B1 19.70 18.14 18.83
238.8072 -54.1182 2.4 -1 USNO-B1 15.36 13.97 14.59 *
238.8020 -54.1174 10.0 -1 USNO-B1 15.86 14.82 15.28
238.7974 -54.1172 19.8 -1 USNO-B1 17.64 17.16 17.37
238.8091 -54.1209 12.7 -1 USNO-B1 99.99 13.78 99.99
238.8089 -54.1211 13.2 -1 USNO-B1 14.57 13.38 13.91
238.8074 -54.1219 15.4 -1 USNO-B1 16.53 99.99 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
-----------------
Entry 43 in the list of sources is a candidate afterglow for 1057131_g888 with 1x1 stamp
ra=238.90364 (15:55:36.87) dec=-54.07455 (-54:04:28.4) +/- 1.1" mag=18.23+/-0.35
dist=252.0 REFID=158
*** The position of this source is inconsistent with the XRT position.
The position is 198.0 arc sec from the BAT position.
src: 43 distr. of nearby unmatched sources: 0 0 0 0 0
Found 14 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
238.8950 -54.0760 18.9 -1 USNO-B1 20.06 18.55 19.22
238.8956 -54.0728 18.1 -1 USNO-B1 19.65 18.77 19.16
238.9006 -54.0796 19.3 -1 USNO-B1 19.34 18.42 18.83
238.8985 -54.0699 19.9 -1 USNO-B1 18.91 18.00 18.40
238.9028 -54.0767 8.0 -1 USNO-B1 99.99 19.20 99.99
238.9043 -54.0742 2.0 -1 USNO-B1 17.00 15.87 16.37 *
238.9024 -54.0695 18.4 -1 USNO-B1 99.99 18.62 99.99
238.9044 -54.0727 6.8 -1 USNO-B1 99.99 17.59 99.99
238.9066 -54.0774 12.1 -1 USNO-B1 20.39 18.52 19.35
238.9069 -54.0772 11.8 -1 USNO-B1 19.85 18.41 19.05
238.9075 -54.0729 10.2 -1 USNO-B1 16.32 15.16 15.67
238.9083 -54.0703 18.2 -1 USNO-B1 99.99 19.32 99.99
238.9099 -54.0722 15.6 -1 USNO-B1 18.68 17.61 18.09
238.9103 -54.0723 16.3 -1 USNO-B1 18.59 17.53 18.00
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 5.4 -1 USNO-B1 18.27 17.10 17.62
The closest star is 5.39" 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 19.22, 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 3 of trigger 1057131
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
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 GRB210621 (Swift/BAT trigger 1057131) at 17:04:36 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 861 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 0.00% of the XRT error circle. No correction
has been made for the large, but uncertain, extinction expected.
------- notes for trigger 1057131 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210621d17h27m57s493781usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1057131
-expid=645988765 -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/1057131/
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.
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 645988765.07732 or about 2021:172:17:19:20 UT
Found 3181 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 36% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 33 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.66 mag. The closest srclist source has ra= 238.7973 dec=
-54.0760 mag=13.86 sep=57.62".
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?
645988765 861 WHITE srclist found no candidates.
645988765 861 ? image data are not available.
List afterglow candidates for other finding charts.
645987948 44 WHITE srclist found no candidates.
645987948 44 WHITE image found no candidates.
645988161 257 U srclist found no candidates.
645988161 257 U image found no candidates.
------- Tokens for Quick GCN -------