srclist overlap message for exposure 2 of trigger 1032350
uvot_overlap.pl vrs. 2010-12-20b fem started at 210213d00h28m44s466110usUT
The observation of trigger 1032350 started 2021-02-13T00:15:16.3
Examining file ./1032350_g302_uvot_sky_srclist.fits
The exposure ID is 634868116
The exposure time is undefined.
The filter is U.
The uvot region is centered at (277.6646,-6.7478) with a roll angle of 101.8
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 (277.6600,-6.7480) with a radius of 3.000 arc min
This is 0.272 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 (277.6734,-6.7542) with a radius of 0.038 arc min
This is 0.653 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1032350
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210213d00h29m01s709230usUT
Observation start time is 2021-02-13T00:15:16.3
Examining file ./1032350_g302_uvot_catalog_srclist.fits
The exposure ID is 634868116
The exposure is 249.950 sec.
The bin size is 2 pixels
The filter is U
There are 163 detected source(s) for 1032350_g302
Aspect correction adds 0.00052 degrees (0.126 sec of time = 1.87 arc sec) to RA
Aspect correction adds 0.00020 degrees ( 0.72 arcsec) to Dec
Total aspect correction is 2.01 arcsec
Star catalogs centered at 277.6639 , -6.7579 with radius 8.59 arc min.
n_usno: 5005 n_gsc: 0
*** WARNING -- bright star catalog has 10 entries brighter than 12 mag
The brightest has mag 10.63288
RA DEC Mag Color
bright star 0: 277.64114 (18:30:33.87) -6.72263 (-06:43:21.5) 12.00 USNO-R
bright star 1: 277.64008 (18:30:33.62) -6.72227 (-06:43:20.2) 11.80 USNO-R
bright star 2: 277.62251 (18:30:29.40) -6.73027 (-06:43:49.0) 11.75 USNO-R
bright star 3: 277.71620 (18:30:51.89) -6.83105 (-06:49:51.8) 11.92 USNO-V
bright star 4: 277.63296 (18:30:31.91) -6.66255 (-06:39:45.2) 11.50 USNO-V
bright star 5: 277.60761 (18:30:25.83) -6.84238 (-06:50:32.6) 11.62 USNO-V
bright star 6: 277.61491 (18:30:27.58) -6.85297 (-06:51:10.7) 11.94 USNO-V
bright star 7: 277.76444 (18:31:03.47) -6.71431 (-06:42:51.5) 10.63 USNO-V
bright star 8: 277.72046 (18:30:52.91) -6.86783 (-06:52:04.2) 11.81 USNO-V
bright star 9: 277.68832 (18:30:45.20) -6.88788 (-06:53:16.4) 12.00 USNO-V
Mean distance difference (CAT_DELTA) for 125 matched entries is 0.898" for 1032350_g302
Mean and std. dev of mag. difference (MAG_DELTA) are 3.007 and 0.737 for 1032350_g302
Found 43 entries without IDs and 5 entries that are acceptable afterglow candidates for 1032350_g302.
Acceptable entries have no ID, XRT distances < 5.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
9 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=277.6600 (18:30:38.40) DEC=-6.7480 (-06:44:52.8)
XRT distances are from RA=277.6734 (18:30:41.61) DEC=-6.7542 (-06:45:15.2)
*** WARNING 26 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1032350_g302 with 3x3 stamp
ra=277.65643 (18:30:37.54) dec=-6.73907 (-06:44:20.7) +/- 1.1" mag=17.06+/-0.35
dist=81.5 REFID=29
*** The position of this source is inconsistent with the XRT position.
The position is 34.6 arc sec from the BAT position.
src: 0 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
277.6598 -6.7435 19.8 -1 USNO-B1 19.62 15.79 17.49
277.6561 -6.7414 8.6 -1 USNO-B1 18.55 99.99 99.99
277.6592 -6.7392 9.9 -1 USNO-B1 99.99 16.24 99.99
277.6562 -6.7397 2.5 -1 USNO-B1 14.25 11.84 12.91 *
277.6532 -6.7404 12.5 -1 USNO-B1 19.61 15.82 17.51
277.6596 -6.7366 14.3 -1 USNO-B1 17.61 15.10 16.21
277.6592 -6.7360 14.9 -1 USNO-B1 19.55 14.68 16.84
277.6596 -6.7356 16.8 -1 USNO-B1 99.99 19.26 99.99
277.6509 -6.7392 19.8 -1 USNO-B1 19.31 16.62 17.82
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1032350_g302 with 3x3 stamp
ra=277.67321 (18:30:41.57) dec=-6.75802 (-06:45:28.9) +/- 1.1" mag=18.39+/-0.35
dist=13.7 REFID=115
*** The position of this source is inconsistent with the XRT position.
The position is 59.4 arc sec from the BAT position.
src: 5 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
277.6685 -6.7589 17.0 -1 USNO-B1 15.75 12.77 14.09 *
277.6685 -6.7596 17.8 -1 USNO-B1 99.99 14.89 99.99
277.6701 -6.7580 11.2 -1 USNO-B1 18.69 99.99 99.99
277.6734 -6.7575 2.1 -1 USNO-B1 16.32 14.69 15.41 *
277.6734 -6.7536 15.9 -1 USNO-B1 15.05 13.09 13.96
277.6741 -6.7628 17.4 -1 USNO-B1 19.36 15.57 17.26
277.6749 -6.7615 13.9 -1 USNO-B1 19.55 16.74 17.99
277.6749 -6.7617 14.5 -1 USNO-B1 18.89 15.62 17.07
277.6758 -6.7622 17.7 -1 USNO-B1 99.99 17.74 99.99
277.6770 -6.7571 14.1 -1 USNO-B1 19.23 16.98 17.98
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 9 in the list of sources is a candidate afterglow for 1032350_g302 with 3x3 stamp
ra=277.68942 (18:30:45.46) dec=-6.75997 (-06:45:35.9) +/- 1.1" mag=16.78+/-0.35
dist=61.0 REFID=25
*** The position of this source is inconsistent with the XRT position.
The position is 113.7 arc sec from the BAT position.
src: 9 distr. of nearby unmatched sources: 1 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
277.6867 -6.7608 10.2 -1 USNO-B1 16.54 15.04 15.70
277.6872 -6.7550 19.7 -1 USNO-B1 19.09 16.58 17.69
277.6880 -6.7645 17.1 -1 USNO-B1 99.99 18.20 99.99
277.6899 -6.7596 2.1 -1 USNO-B1 14.68 12.89 13.68 *
277.6903 -6.7592 4.4 -1 USNO-B1 17.41 12.96 14.94 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 18 in the list of sources is a candidate afterglow for 1032350_g302 with 1x1 stamp
ra=277.65624 (18:30:37.50) dec=-6.70719 (-06:42:25.9) +/- 1.1" mag=18.12+/-0.35
dist=180.1 REFID=154
*** The position of this source is inconsistent with the XRT position.
The position is 147.5 arc sec from the BAT position.
src: 18 srclist_match has ID
src: 18 distr. of nearby unmatched sources: 0 0 0 0 0
Found 12 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
277.6570 -6.7113 15.0 -1 USNO-B1 20.29 17.86 18.94
277.6567 -6.7107 12.7 -1 USNO-B1 18.91 18.14 18.48
277.6528 -6.7113 19.3 -1 USNO-B1 99.99 17.83 99.99
277.6575 -6.7080 5.4 -1 USNO-B1 17.46 14.57 15.86
277.6585 -6.7078 8.6 -1 USNO-B1 18.51 16.05 17.14
277.6580 -6.7078 6.6 -1 USNO-B1 16.45 14.07 15.13
277.6565 -6.7074 1.2 -1 USNO-B1 17.07 15.08 15.96 *
277.6510 -6.7083 19.2 -1 USNO-B1 15.73 13.58 14.54
277.6578 -6.7068 5.9 -1 USNO-B1 99.99 15.99 99.99
277.6601 -6.7043 17.4 -1 USNO-B1 16.82 14.63 15.61
277.6535 -6.7049 12.8 -1 USNO-B1 15.88 14.04 14.85
277.6529 -6.7029 19.4 -1 USNO-B1 18.79 16.29 17.40
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 1032350_g302 with 1x1 stamp
ra=277.70275 (18:30:48.66) dec=-6.72480 (-06:43:29.3) +/- 1.1" mag=18.04+/-0.35
dist=149.1 REFID=144
*** The position of this source is inconsistent with the XRT position.
The position is 174.2 arc sec from the BAT position.
src: 27 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
277.7020 -6.7287 14.3 -1 USNO-B1 17.27 14.88 15.94
277.7010 -6.7268 9.6 -1 USNO-B1 17.75 99.99 99.99
277.7048 -6.7293 17.8 -1 USNO-B1 16.30 13.56 14.78
277.7021 -6.7258 4.4 -1 USNO-B1 15.37 12.65 13.86 *
277.7052 -6.7297 19.5 -1 USNO-B1 20.38 12.40 15.94 *
277.7022 -6.7254 3.0 -1 USNO-B1 16.00 99.99 99.99 *
277.7005 -6.7217 13.6 -1 USNO-B1 19.19 16.99 17.97
277.7007 -6.7202 18.1 -1 USNO-B1 19.73 16.60 17.99
277.7077 -6.7265 18.8 -1 USNO-B1 19.46 99.99 99.99
277.7077 -6.7258 17.9 -1 USNO-B1 18.27 14.10 15.95
277.7061 -6.7237 12.6 -1 USNO-B1 17.95 14.67 16.12
277.7043 -6.7204 16.9 -1 USNO-B1 18.73 18.09 18.37
277.7060 -6.7209 18.1 -1 USNO-B1 19.68 16.92 18.15
277.7060 -6.7204 19.5 -1 USNO-B1 18.68 16.54 17.49
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
277.6734 -6.7536 2.2 -1 USNO-B1 15.05 13.09 13.96
The closest star is 2.22" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=277.67372 (18:30:41.69) dec=-6.75314 (-06:45:11.3) +/- 1.1" mag=17.75+/-0.35 dist=4.1 REFID=70
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 < 5.75",
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 1032350
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: high density of stars
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 GRB210213 (Swift/BAT trigger 1032350) at 00:10:13 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
275 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 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 region. No correction has been made for the large, but
uncertain, extinction expected.
------- notes for trigger 1032350 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210213d00h29m07s210108usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1032350
-expid=634868116 -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/1032350/
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. BAT position found.
UVOT exposure began at MET 634868116.31262 or about 2021:044:00:15:11 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 47% of the srclist region. Found 163 sources in
srclist catalog. Found 43 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 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 277.6737 dec= -6.7531 mag=17.75 sep=4.08".
The closest srclist source has ra= 277.6737 dec= -6.7531 mag=17.75 sep=4.08".
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 250 seconds with the U filter starting
275 seconds after the BAT trigger. There is a candidate afterglow in the list
of sources generated on-board at
RA(J2000) = 18:30:41.69 = 277.67372
DEC(J2000) = -06:45:11.3 = -6.75314
with a 90%-confidence error radius of about 1.10 arc sec. This position is 4.08
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.75 with a 1-sigma error of about 0.35. 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?
634868116 275 U srclist found no candidates.
634868116 275 ? image data are not available.
List afterglow candidates for other finding charts.
634867904 63 WHITE srclist found no candidates.
634867904 63 WHITE image found no candidates.
------- Tokens for Quick GCN -------