image overlap message for exposure 1 of trigger 1032350
uvot_overlap.pl vrs. 2010-12-20b fem started at 210213d00h28m45s132092usUT
The observation of trigger 1032350 started 2021-02-13T00:11:44.3
Examining file ./1032350_g90_uvot_sky_image.fits
The exposure ID is 634867904
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (277.6672,-6.7446) with a roll angle of 101.8
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 (277.6600,-6.7480) with a radius of 3.000 arc min
This is 0.475 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 (277.6734,-6.7542) with a radius of 0.038 arc min
This is 0.686 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
image afterglow message for exposure 1 of trigger 1032350
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210213d00h28m50s192831usUT
Observation start time is 2021-02-13T00:11:44.3
Examining file ./1032350_g90_uvot_catalog_image.fits
The exposure ID is 634867904
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 41 detected source(s) for 1032350_g90
Aspect correction adds 0.00061 degrees (0.145 sec of time = 2.16 arc sec) to RA
Aspect correction adds -0.00011 degrees (-0.39 arcsec) to Dec
Total aspect correction is 2.20 arcsec
Star catalogs centered at 277.6644 , -6.7425 with radius 2.62 arc min.
n_usno: 568 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 11.75
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
Mean distance difference (CAT_DELTA) for 38 matched entries is 0.789" for 1032350_g90
Mean and std. dev of mag. difference (MAG_DELTA) are 2.149 and 0.719 for 1032350_g90
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1032350_g90.
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.
0 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)
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1032350_g90 with genie
ra=277.65145 (18:30:36.35) dec=-6.75309 (-06:45:11.1) +/- 0.8" mag=19.84+/-0.22
dist=78.5 REFID=28 major=0.8 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 35.7 arc sec from the BAT position.
Found 12 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
277.6528 -6.7503 11.1 -1 USNO-B1 16.84 14.48 15.53
277.6526 -6.7503 10.8 -1 USNO-B1 16.70 14.64 15.56
277.6515 -6.7501 10.9 -1 USNO-B1 17.35 99.99 99.99
277.6545 -6.7550 12.9 -1 USNO-B1 17.37 15.11 16.11
277.6503 -6.7505 10.3 -1 USNO-B1 19.71 16.15 17.73
277.6544 -6.7563 15.8 -1 USNO-B1 17.88 99.99 99.99
277.6516 -6.7538 2.5 -1 USNO-B1 18.69 14.76 16.50 *
277.6521 -6.7548 6.5 -1 USNO-B1 99.99 16.25 99.99
277.6493 -6.7518 9.0 -1 USNO-B1 19.14 15.81 17.29
277.6525 -6.7577 17.1 -1 USNO-B1 18.79 15.83 17.14
277.6473 -6.7561 18.4 -1 USNO-B1 19.95 14.73 17.05
277.6465 -6.7556 19.9 -1 USNO-B1 14.82 11.84 13.16 *
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 8 in the list of sources is a candidate afterglow for 1032350_g90 with genie
ra=277.67103 (18:30:41.05) dec=-6.74956 (-06:44:58.4) +/- 0.6" mag=18.07+/-0.15
dist=18.8 REFID=23 major=1.0 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 39.8 arc sec from the BAT position.
Found 9 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
277.6705 -6.7441 19.8 -1 USNO-B1 17.98 16.03 16.90
277.6705 -6.7461 12.7 -1 USNO-B1 19.06 16.39 17.58
277.6725 -6.7463 12.7 -1 USNO-B1 99.99 17.45 99.99
277.6710 -6.7502 2.3 -1 USNO-B1 17.08 14.48 15.64 *
277.6694 -6.7519 10.1 -1 USNO-B1 99.99 17.14 99.99
277.6751 -6.7459 19.5 -1 USNO-B1 20.50 18.48 19.38
277.6715 -6.7516 7.5 -1 USNO-B1 19.07 16.75 17.78
277.6696 -6.7529 12.9 -1 USNO-B1 18.20 15.30 16.59
277.6734 -6.7536 16.9 -1 USNO-B1 15.05 13.09 13.96
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 11 in the list of sources is a candidate afterglow for 1032350_g90 with genie
ra=277.67124 (18:30:41.10) dec=-6.74286 (-06:44:34.3) +/- 0.6" mag=17.94+/-0.15
dist=41.6 REFID=20 major=1.4 minor=1.2 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 44.2 arc sec from the BAT position.
Found 15 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
277.6658 -6.7427 19.4 -1 USNO-B1 19.74 16.66 18.03
277.6662 -6.7450 19.7 -1 USNO-B1 19.55 99.99 99.99
277.6664 -6.7449 18.7 -1 USNO-B1 99.99 15.57 99.99
277.6664 -6.7451 19.2 -1 USNO-B1 19.03 99.99 99.99
277.6690 -6.7409 10.6 -1 USNO-B1 17.09 15.41 16.15
277.6679 -6.7386 19.6 -1 USNO-B1 99.99 16.57 99.99
277.6682 -6.7387 18.4 -1 USNO-B1 99.99 16.84 99.99
277.6705 -6.7441 5.1 -1 USNO-B1 17.98 16.03 16.90
277.6706 -6.7408 7.9 -1 USNO-B1 20.02 17.91 18.85
277.6712 -6.7434 2.0 -1 USNO-B1 16.58 14.52 15.43 *
277.6705 -6.7461 11.9 -1 USNO-B1 19.06 16.39 17.58
277.6725 -6.7463 13.3 -1 USNO-B1 99.99 17.45 99.99
277.6739 -6.7431 9.6 -1 USNO-B1 19.97 18.48 19.14
277.6751 -6.7459 17.7 -1 USNO-B1 20.50 18.48 19.38
277.6754 -6.7393 19.8 -1 USNO-B1 18.62 16.63 17.51
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 15 in the list of sources is a candidate afterglow for 1032350_g90 with genie
ra=277.67387 (18:30:41.73) dec=-6.75302 (-06:45:10.9) +/- 0.6" mag=16.10+/-0.14
dist=4.7 REFID=26 major=1.2 minor=1.0 flag=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
277.6710 -6.7502 14.6 -1 USNO-B1 17.08 14.48 15.64
277.6694 -6.7519 16.4 -1 USNO-B1 99.99 17.14 99.99
277.6715 -6.7516 9.9 -1 USNO-B1 19.07 16.75 17.78
277.6696 -6.7529 15.2 -1 USNO-B1 18.20 15.30 16.59
277.6734 -6.7536 2.7 -1 USNO-B1 15.05 13.09 13.96 *
277.6769 -6.7520 11.5 -1 USNO-B1 19.09 16.06 17.41
277.6734 -6.7575 16.1 -1 USNO-B1 16.32 14.69 15.41
277.6770 -6.7571 18.4 -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 3.5" 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
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:
Unmatched source ra=277.67387 (18:30:41.73) dec=-6.75302 (-06:45:10.9) +/- 0.6" mag=16.10+/-0.14 dist=4.7 REFID=26 flag=0
There are 1.5903920E+05 counts in the bkg source region of 5417.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 29.359 counts/pixel (5-sig UL in 4" is 19.51 mag) for 1032350_g90
There are 9390.2383 counts in the xrt source region of 195.00000 pixels.
Rate in xrt region with 8 arcsec radius is 48.155 counts/pixel for 1032350_g90
There are 27263.295 counts in the xrt_bkg source region of 937.00000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 29.096 counts/pixel (5-sig UL in 4" is 19.52 mag) for 1032350_g90
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 20.07, XRT distances < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1032350_634867904_210213d00h28m50s192831usUT_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(277.6672,-6.7446,45")
fk5;-circle(277.658096877627,-6.75415663322569,6")
fk5;-circle(277.662999100912,-6.74156487391446,6")
fk5;-circle(277.656231184571,-6.73948944201282,6")
fk5;-circle(277.669681609156,-6.75273913307441,6")
fk5;-circle(277.671028514636,-6.74955684354267,6")
fk5;-circle(277.6597214458,-6.73660909378692,6")
fk5;-circle(277.669033188006,-6.74060024697721,6")
fk5;-circle(277.671240202837,-6.74285554415779,6")
fk5;-circle(277.668511904625,-6.75863256582885,6")
fk5;-circle(277.673874181812,-6.75301556635795,6")
Region file: 1032350_634867904_210213d00h28m50s192831usUT_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(277.67338,-6.75422,8")
Region file: 1032350_634867904_210213d00h28m50s192831usUT_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(277.67338,-6.75422,25")
fk5;-circle(277.67338,-6.75422,15")
fk5;-circle(277.669681609156,-6.75273913307441,6")
fk5;-circle(277.671028514636,-6.74955684354267,6")
fk5;-circle(277.668511904625,-6.75863256582885,6")
fk5;-circle(277.673466194273,-6.75747401673232,6")
fk5;-circle(277.679659125485,-6.75719412248678,6")
image paragraph message for exposure 1 of trigger 1032350
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: high density of stars, srclist filled telemetry buffer
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 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 150 seconds with the White filter
starting 63 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. 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 210213d00h29m10s125212usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1032350
-expid=634867904 -meonly -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/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. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 634867904.25992 or about 2021:044:00:11:39 UT
Found 2787 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 54% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 9 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 41 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. 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
20.07 mag. Found 564 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 57% of the Genie image region.
Genie image analysis:
Found 159039.2 counts in the large background region of 5417.0 pixels or a rate
of 29.359 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 19.34 mag. for a
4-arcsec aperture.
Found 9390.2 counts in the XRT position region of 195.0 pixels or a rate of
48.155 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 24.776 +/- 0.685 (1-sigma) cps or
16.12 mag and a range from 16.09 to 16.15 mag. The 3-sigma UL at the XRT
position is 26.832 cps or 16.03 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.83 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 277.6740 dec= -6.7531 mag=17.25 sep=4.64".
The closest srclist source has ra= 277.6740 dec= -6.7531 mag=17.25 sep=4.64".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 277.6739 dec= -6.7530 mag=16.10 sep=4.68". The closest Genie
source has ra= 277.6739 dec= -6.7530 mag=16.10 sep=4.68".
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 63 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:30:41.73 = 277.67387
DEC(J2000) = -06:45:10.9 = -6.75302
with a 90%-confidence error radius of about 0.61 arc sec. This position is 4.68
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.10 with a 1-sigma error of about 0.14. 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?
634867904 63 WHITE srclist found no candidates.
634867904 63 WHITE image found no candidates.
List afterglow candidates for other finding charts.
634868116 275 U srclist found no candidates.
634868116 275 ? image data are not available.
------- Tokens for Quick GCN -------