srclist overlap message for exposure 2 of trigger 999571
uvot_overlap.pl vrs. 2010-12-20b fem started at 201010d21h01m51s422379usUT
The observation of trigger 999571 started 2020-10-10T14:54:34.2
Examining file ./999571_g310_uvot_sky_srclist.fits
The exposure ID is 624034474
The exposure time is undefined.
The filter is U.
The uvot region is centered at (277.6718,-6.7611) with a roll angle of 264.0
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 (277.6750,-6.7580) with a radius of 3.000 arc min
This is 0.266 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 (277.6738,-6.7546) with a radius of 0.023 arc min
This is 0.410 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 999571
find_uvot_ag.pl vrs. 2017-02-17 fem started at 201010d21h02m07s737534usUT
Observation start time is 2020-10-10T14:54:34.2
Examining file ./999571_g310_uvot_catalog_srclist.fits
The exposure ID is 624034474
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 999571_g310
*** 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 999571_g310 has mag 18.41
Aspect correction adds -0.00100 degrees (-0.239 sec of time = -3.56 arc sec) to RA
Aspect correction adds -0.00076 degrees (-2.74 arcsec) to Dec
Total aspect correction is 4.49 arcsec
Star catalogs centered at 277.6660 , -6.7577 with radius 8.38 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: 277.76444 (18:31:03.47) -6.71431 (-06:42:51.5) 10.63 USNO-V
bright star 7: 277.61491 (18:30:27.58) -6.85297 (-06:51:10.7) 11.94 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 170 matched entries is 0.977" for 999571_g310
Mean and std. dev of mag. difference (MAG_DELTA) are 2.800 and 0.776 for 999571_g310
Found 31 entries without IDs and 5 entries that are acceptable afterglow candidates for 999571_g310.
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.
11 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=277.6750 (18:30:42.00) DEC=-6.7580 (-06:45:28.8)
XRT distances are from RA=277.6738 (18:30:41.72) DEC=-6.7546 (-06:45:16.4)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 999571_g310 with 3x3 stamp
ra=277.67367 (18:30:41.68) dec=-6.75305 (-06:45:11.0) +/- 1.1" mag=17.60+/-0.35
dist=5.5 REFID=75
*** The position of this source is inconsistent with the XRT position.
The position is 21.9 arc sec from the BAT position.
src: 1 distr. of nearby unmatched sources: 0 0 0 0 0
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
277.6696 -6.7529 14.5 -1 USNO-B1 18.20 15.30 16.59
277.6694 -6.7519 15.7 -1 USNO-B1 99.99 17.14 99.99
277.6734 -6.7575 15.9 -1 USNO-B1 16.32 14.69 15.41
277.6715 -6.7516 9.3 -1 USNO-B1 19.07 16.75 17.78
277.6734 -6.7536 2.2 -1 USNO-B1 15.05 13.09 13.96 *
277.6710 -6.7502 14.1 -1 USNO-B1 17.08 14.48 15.64
277.6770 -6.7571 18.8 -1 USNO-B1 19.23 16.98 17.98
277.6769 -6.7520 12.2 -1 USNO-B1 19.09 16.06 17.41
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 26 in the list of sources is a candidate afterglow for 999571_g310 with 1x1 stamp
ra=277.70292 (18:30:48.70) dec=-6.72557 (-06:43:32.1) +/- 1.1" mag=18.04+/-0.35
dist=147.3 REFID=126
*** The position of this source is inconsistent with the XRT position.
The position is 156.3 arc sec from the BAT position.
src: 26 distr. of nearby unmatched sources: 0 0 0 0 0
Found 13 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
277.7016 -6.7302 17.5 -1 USNO-B1 16.91 13.97 15.28
277.7020 -6.7287 11.7 -1 USNO-B1 17.27 14.88 15.94
277.7010 -6.7268 8.2 -1 USNO-B1 17.75 99.99 99.99
277.7049 -6.7303 18.3 -1 USNO-B1 15.32 12.69 13.86 *
277.7048 -6.7293 15.0 -1 USNO-B1 16.30 13.56 14.78
277.7052 -6.7297 16.8 -1 USNO-B1 20.38 12.40 15.94 *
277.7021 -6.7258 3.0 -1 USNO-B1 15.37 12.65 13.86 *
277.7022 -6.7254 2.7 -1 USNO-B1 16.00 99.99 99.99 *
277.7005 -6.7217 16.2 -1 USNO-B1 19.19 16.99 17.97
277.7077 -6.7265 17.6 -1 USNO-B1 19.46 99.99 99.99
277.7077 -6.7258 17.0 -1 USNO-B1 18.27 14.10 15.95
277.7061 -6.7237 13.3 -1 USNO-B1 17.95 14.67 16.12
277.7043 -6.7204 19.4 -1 USNO-B1 18.73 18.09 18.37
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 28 in the list of sources is a candidate afterglow for 999571_g310 with 1x1 stamp
ra=277.68513 (18:30:44.43) dec=-6.80212 (-06:48:07.6) +/- 1.1" mag=17.59+/-0.35
dist=175.9 REFID=128
*** The position of this source is inconsistent with the XRT position.
The position is 159.4 arc sec from the BAT position.
src: 28 distr. of nearby unmatched sources: 0 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
277.6852 -6.7966 19.9 -1 USNO-B1 19.09 15.75 17.24
277.6876 -6.7994 13.1 -1 USNO-B1 19.32 18.47 18.85
277.6863 -6.8016 4.8 -1 USNO-B1 19.30 16.15 17.55
277.6848 -6.8030 3.3 -1 USNO-B1 13.68 11.88 12.68 *
277.6862 -6.8052 11.8 -1 USNO-B1 20.75 17.20 18.78
277.6904 -6.8037 19.6 -1 USNO-B1 15.39 12.82 13.96 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 32 in the list of sources is a candidate afterglow for 999571_g310 with 1x1 stamp
ra=277.72113 (18:30:53.07) dec=-6.74822 (-06:44:53.6) +/- 1.1" mag=18.12+/-0.35
dist=170.6 REFID=119
*** The position of this source is inconsistent with the XRT position.
The position is 169.4 arc sec from the BAT position.
src: 32 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
277.7172 -6.7514 18.1 -1 USNO-B1 19.27 14.72 16.74
277.7176 -6.7515 17.4 -1 USNO-B1 18.95 14.78 16.63
277.7212 -6.7498 5.5 -1 USNO-B1 16.73 14.54 15.52
277.7212 -6.7488 2.2 -1 USNO-B1 16.00 13.59 14.66 *
277.7218 -6.7495 5.2 -1 USNO-B1 19.04 13.75 16.10
277.7223 -6.7504 8.8 -1 USNO-B1 20.07 15.67 17.62
277.7223 -6.7481 4.2 -1 USNO-B1 20.18 17.16 18.50
277.7244 -6.7449 16.6 -1 USNO-B1 99.99 17.57 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 47 in the list of sources is a candidate afterglow for 999571_g310 with 1x1 stamp
ra=277.65584 (18:30:37.40) dec=-6.70764 (-06:42:27.5) +/- 1.1" mag=18.04+/-0.35
dist=180.7 REFID=178
*** The position of this source is inconsistent with the XRT position.
The position is 197.2 arc sec from the BAT position.
src: 47 distr. of nearby unmatched sources: 0 0 0 0 0
Found 13 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 13.7 -1 USNO-B1 20.29 17.86 18.94
277.6523 -6.7119 19.9 -1 USNO-B1 16.98 15.00 15.88
277.6567 -6.7107 11.3 -1 USNO-B1 18.91 18.14 18.48
277.6528 -6.7113 17.2 -1 USNO-B1 99.99 17.83 99.99
277.6585 -6.7078 9.7 -1 USNO-B1 18.51 16.05 17.14
277.6575 -6.7080 6.1 -1 USNO-B1 17.46 14.57 15.86
277.6580 -6.7078 7.7 -1 USNO-B1 16.45 14.07 15.13
277.6565 -6.7074 2.4 -1 USNO-B1 17.07 15.08 15.96 *
277.6578 -6.7068 7.8 -1 USNO-B1 99.99 15.99 99.99
277.6510 -6.7083 17.5 -1 USNO-B1 15.73 13.58 14.54
277.6601 -6.7043 19.6 -1 USNO-B1 16.82 14.63 15.61
277.6535 -6.7049 13.0 -1 USNO-B1 15.88 14.04 14.85
277.6529 -6.7029 20.0 -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
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 3.7 -1 USNO-B1 15.05 13.09 13.96
The closest star is 3.73" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=277.67367 (18:30:41.68) dec=-6.75305 (-06:45:11.0) +/- 1.1" mag=17.60+/-0.35 dist=5.5 REFID=75
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 999571
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 GRB201010 (Swift/BAT trigger 999571) at 14:49:23 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
284 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 999571 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 201010d21h02m16s845390usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=999571
-expid=624034474 -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/999571/
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 624034474.17052 or about 2020:284:14:54:29 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 49% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 31 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 27 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
20.25 mag. Found 614 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 59% of the Genie image region.
Genie image analysis:
Found 22488.6 counts in the large background region of 5453.0 pixels or a rate
of 4.124 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 19.74 mag. for a
4-arcsec aperture.
Found 1750.2 counts in the XRT position region of 200.0 pixels or a rate of
8.751 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 3.738 +/- 0.175 (1-sigma) cps or
16.95 mag and a range from 16.90 to 17.00 mag. The 3-sigma UL at the XRT
position is 4.262 cps or 16.81 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.41 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 277.6737 dec= -6.7530 mag=17.60 sep=5.46".
The closest srclist source has ra= 277.6737 dec= -6.7530 mag=17.60 sep=5.46".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 277.6739 dec= -6.7533 mag=16.59 sep=4.71". The closest Genie
source has ra= 277.6739 dec= -6.7533 mag=16.59 sep=4.71".
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
284 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:30:41.75 = 277.67394
DEC(J2000) = -06:45:11.7 = -6.75326
with a 90%-confidence error radius of about 0.62 arc sec. This position is 4.71
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.59 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?
624034474 284 U srclist found no candidates.
624034474 284 U image found no candidates.
List afterglow candidates for other finding charts.
624034261 71 WHITE srclist found no candidates.
624034261 71 WHITE image found no candidates.
------- Tokens for Quick GCN -------