srclist overlap message for exposure 1 of trigger 952791
uvot_overlap.pl vrs. 2010-12-20b fem started at 200128d00h03m24s967660usUT
The observation of trigger 952791 started 2020-01-27T14:47:25.9
Examining file ./952791_g173_uvot_sky_srclist.fits
The exposure ID is 601829245
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (295.2037,44.9029) with a roll angle of 165.0
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (295.2040,44.9100) with a radius of 3.000 arc min
This is 0.429 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 (295.1930,44.9003) with a radius of 0.023 arc min
This is 0.482 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 1 of trigger 952791
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200128d00h03m29s350162usUT
Observation start time is 2020-01-27T14:47:25.9
Examining file ./952791_g173_uvot_catalog_srclist.fits
The exposure ID is 601829245
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 952791_g173
*** 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 952791_g173 has mag 19.15
Aspect correction adds -0.00003 degrees (-0.007 sec of time = -0.07 arc sec) to RA
Aspect correction adds -0.00078 degrees (-2.82 arcsec) to Dec
Total aspect correction is 2.82 arcsec
Star catalogs centered at 295.2056 , 44.9006 with radius 6.40 arc min.
n_usno: 1503 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 9.57854
RA DEC Mag Color
bright star 0: 295.16047 (19:40:38.51) 44.86912 (+44:52:08.8) 11.00 USNO-V
bright star 1: 295.15888 (19:40:38.13) 44.94483 (+44:56:41.4) 10.55 USNO-V
bright star 2: 295.28976 (19:41:09.54) 44.89665 (+44:53:48.0) 9.58 USNO-V
bright star 3: 295.13923 (19:40:33.41) 44.94080 (+44:56:26.9) 10.30 USNO-V
bright star 4: 295.28585 (19:41:08.60) 44.94199 (+44:56:31.2) 11.10 USNO-V
bright star 5: 295.15516 (19:40:37.24) 44.99045 (+44:59:25.6) 10.57 USNO-V
Mean distance difference (CAT_DELTA) for 167 matched entries is 0.732" for 952791_g173
Mean and std. dev of mag. difference (MAG_DELTA) are 1.231 and 0.601 for 952791_g173
Found 23 entries without IDs and 11 entries that are acceptable afterglow candidates for 952791_g173.
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=295.2040 (19:40:48.96) DEC=44.9100 (+44:54:36.0)
XRT distances are from RA=295.1930 (19:40:46.32) DEC=44.9003 (+44:54:01.0)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 952791_g173 with 1x1 stamp
ra=295.19688 (19:40:47.25) dec=44.89633 (+44:53:46.8) +/- 1.1" mag=18.70+/-0.35
dist=17.3 REFID=159
*** The position of this source is inconsistent with the XRT position.
The position is 53.4 arc sec from the BAT position.
src: 1 distr. of nearby unmatched sources: 0 0 0 0 0
Found 5 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
295.2011 44.8948 12.2 -1 USNO-B1 16.86 15.80 16.27
295.1975 44.8971 3.0 -1 USNO-B1 99.99 18.74 99.99 *
295.1971 44.8969 2.1 -1 USNO-B1 17.95 16.30 17.03 *
295.1934 44.8947 10.7 -1 USNO-B1 16.94 15.62 16.21
295.1914 44.8945 15.4 -1 USNO-B1 19.73 18.05 18.80
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 952791_g173 with 1x1 stamp
ra=295.22709 (19:40:54.50) dec=44.91507 (+44:54:54.3) +/- 1.1" mag=17.60+/-0.35
dist=101.9 REFID=127
*** The position of this source is inconsistent with the XRT position.
The position is 59.2 arc sec from the BAT position.
src: 18 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
295.2197 44.9159 19.1 -1 USNO-B1 99.99 19.48 99.99
295.2283 44.9155 3.3 -1 USNO-B1 15.08 13.86 14.40 *
295.2294 44.9179 11.7 -1 USNO-B1 17.43 16.73 17.04
295.2301 44.9180 13.2 -1 USNO-B1 18.66 17.01 17.74
295.2327 44.9180 17.7 -1 USNO-B1 19.77 18.66 19.16
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 30 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.16427 (19:40:39.42) dec=44.92319 (+44:55:23.5) +/- 1.1" mag=17.90+/-0.35
dist=110.3 REFID=89
*** The position of this source is inconsistent with the XRT position.
The position is 114.2 arc sec from the BAT position.
src: 30 distr. of nearby unmatched sources: 1 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
295.1644 44.9184 17.2 -1 USNO-B1 20.26 19.17 19.65
295.1623 44.9186 17.2 -1 USNO-B1 19.21 17.52 18.27
295.1690 44.9256 14.9 -1 USNO-B1 99.99 19.29 99.99
295.1641 44.9238 2.3 -1 USNO-B1 16.03 14.71 15.30 *
295.1613 44.9225 8.0 -1 USNO-B1 20.07 18.82 19.38
295.1585 44.9195 19.8 -1 USNO-B1 20.22 18.96 19.52
295.1657 44.9271 14.5 -1 USNO-B1 20.32 19.14 19.66
295.1624 44.9248 7.4 -1 USNO-B1 99.99 17.79 99.99
295.1619 44.9249 8.8 -1 USNO-B1 18.91 17.69 18.23
295.1635 44.9278 16.7 -1 USNO-B1 20.31 18.72 19.43
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 46 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.18898 (19:40:45.36) dec=44.86352 (+44:51:48.7) +/- 1.1" mag=17.84+/-0.35
dist=132.7 REFID=83
*** The position of this source is inconsistent with the XRT position.
The position is 172.2 arc sec from the BAT position.
src: 46 distr. of nearby unmatched sources: 1 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
295.1926 44.8657 12.2 -1 USNO-B1 18.50 17.11 17.73
295.1887 44.8653 6.6 -1 USNO-B1 13.96 13.18 13.52
295.1888 44.8645 3.6 -1 USNO-B1 14.76 99.99 99.99 *
295.1840 44.8636 12.7 -1 USNO-B1 18.16 16.85 17.43
295.1950 44.8603 19.3 -1 USNO-B1 17.22 16.10 16.60
295.1865 44.8603 13.3 -1 USNO-B1 18.59 17.40 17.93
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 67 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.13770 (19:40:33.05) dec=44.92552 (+44:55:31.9) +/- 1.1" mag=17.98+/-0.35
dist=167.7 REFID=94
*** The position of this source is inconsistent with the XRT position.
The position is 180.4 arc sec from the BAT position.
src: 67 distr. of nearby unmatched sources: 1 1 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
295.1440 44.9268 16.8 -1 USNO-B1 20.17 18.61 19.30
295.1438 44.9281 18.1 -1 USNO-B1 99.99 15.80 99.99
295.1435 44.9279 17.1 -1 USNO-B1 17.29 16.59 16.90
295.1439 44.9286 19.5 -1 USNO-B1 16.87 15.74 16.24
295.1366 44.9236 7.5 -1 USNO-B1 20.52 14.73 17.30
295.1371 44.9250 2.5 -1 USNO-B1 15.62 14.90 15.22 *
295.1390 44.9304 17.8 -1 USNO-B1 20.29 19.23 19.70
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 69 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.13630 (19:40:32.71) dec=44.92436 (+44:55:27.7) +/- 1.1" mag=17.56+/-0.35
dist=168.5 REFID=88
*** The position of this source is inconsistent with the XRT position.
The position is 182.6 arc sec from the BAT position.
src: 69 distr. of nearby unmatched sources: 1 1 0 0 0
Found 4 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
295.1351 44.9193 18.5 -1 USNO-B1 19.20 17.58 18.30
295.1366 44.9236 2.9 -1 USNO-B1 20.52 14.73 17.30 *
295.1371 44.9250 3.0 -1 USNO-B1 15.62 14.90 15.22 *
295.1285 44.9240 19.9 -1 USNO-B1 20.17 19.12 19.58
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 71 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.25329 (19:41:00.79) dec=44.93091 (+44:55:51.3) +/- 1.1" mag=17.66+/-0.35
dist=189.1 REFID=99
*** The position of this source is inconsistent with the XRT position.
The position is 144.3 arc sec from the BAT position.
src: 71 distr. of nearby unmatched sources: 1 2 0 0 0
Found 4 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
295.2546 44.9298 5.2 -1 USNO-B1 15.25 13.71 14.40
295.2539 44.9304 2.5 -1 USNO-B1 99.99 13.68 99.99 *
295.2488 44.9345 17.2 -1 USNO-B1 18.11 16.85 17.41
295.2571 44.9293 11.3 -1 USNO-B1 18.73 16.51 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
-----------------
Entry 72 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.25505 (19:41:01.21) dec=44.92933 (+44:55:45.6) +/- 1.1" mag=16.89+/-0.35
dist=189.6 REFID=44
*** The position of this source is inconsistent with the XRT position.
The position is 145.3 arc sec from the BAT position.
src: 72 distr. of nearby unmatched sources: 2 1 0 0 0
Found 4 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
295.2546 44.9245 17.3 -1 USNO-B1 19.97 18.37 19.08
295.2546 44.9298 2.1 -1 USNO-B1 15.25 13.71 14.40 *
295.2539 44.9304 4.7 -1 USNO-B1 99.99 13.68 99.99
295.2571 44.9293 5.2 -1 USNO-B1 18.73 16.51 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
-----------------
Entry 75 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.21600 (19:40:51.84) dec=44.94989 (+44:56:59.6) +/- 1.1" mag=16.68+/-0.35
dist=188.0 REFID=30
*** The position of this source is inconsistent with the XRT position.
The position is 146.3 arc sec from the BAT position.
src: 75 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
295.2192 44.9461 15.9 -1 USNO-B1 20.31 18.95 19.55
295.2115 44.9499 11.5 -1 USNO-B1 99.99 18.44 99.99
295.2150 44.9500 2.7 -1 USNO-B1 99.99 13.52 99.99 *
295.2143 44.9502 4.5 -1 USNO-B1 14.62 13.48 13.98
295.2142 44.9504 5.0 -1 USNO-B1 99.99 13.85 99.99
295.2197 44.9515 11.1 -1 USNO-B1 20.33 19.01 19.60
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 81 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.23460 (19:40:56.30) dec=44.94490 (+44:56:41.7) +/- 1.1" mag=15.71+/-0.35
dist=192.5 REFID=18
*** The position of this source is inconsistent with the XRT position.
The position is 146.6 arc sec from the BAT position.
src: 81 distr. of nearby unmatched sources: 0 2 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
295.2323 44.9419 12.4 -1 USNO-B1 18.37 16.67 17.42
295.2322 44.9442 6.6 -1 USNO-B1 99.99 19.54 99.99
295.2336 44.9449 2.6 -1 USNO-B1 16.82 13.41 14.93 *
295.2377 44.9435 9.5 -1 USNO-B1 15.50 99.99 99.99
295.2369 44.9440 6.7 -1 USNO-B1 14.54 13.91 14.19
295.2384 44.9465 11.2 -1 USNO-B1 17.05 15.82 16.36
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 123 in the list of sources is a candidate afterglow for 952791_g173 with 3x3 stamp
ra=295.28056 (19:41:07.33) dec=44.91427 (+44:54:51.4) +/- 1.1" mag=15.74+/-0.35
dist=228.8 REFID=29
*** The position of this source is inconsistent with the XRT position.
The position is 193.3 arc sec from the BAT position.
src: 123 distr. of nearby unmatched sources: 0 0 0 0 0
Found 4 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
295.2797 44.9123 7.3 -1 USNO-B1 20.24 19.05 19.58
295.2818 44.9111 12.0 -1 USNO-B1 20.14 19.20 19.62
295.2815 44.9142 2.4 -1 USNO-B1 14.07 13.18 13.57 *
295.2801 44.9181 13.8 -1 USNO-B1 19.91 17.91 18.80
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 2 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
295.1911 44.9018 7.4 -1 USNO-B1 20.30 19.72 19.98
295.1895 44.9007 8.9 -1 USNO-B1 18.74 17.23 17.91
The closest star is 7.41" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=295.18923 (19:40:45.41) dec=44.90052 (+44:54:01.9) +/- 1.1" mag=18.93+/-0.35 dist=9.7 REFID=179
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 1 of trigger 952791
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.
------ Start for Possible Stand-alone Circular ----
In response to GRB200127 (Swift/BAT trigger 952791) at 14:44:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 149 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 mag. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.16.
------- notes for trigger 952791 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200128d00h03m33s780839usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=952791
-expid=601829245 -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/952791/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 601829245.92578 or about 2020:027:14:47:20 UT
Found 1499 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 25% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 23 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 18 source(s) in Genie image catalog. Found 3 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.36 mag. Found 277 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
24% of the Genie image region. The Genie image is INCOMPLETE with 16720 null
pixels.
Genie image analysis:
Found 17668.6 counts in the large background region of 1034.0 pixels or a rate
of 17.088 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 19.81 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 19.15 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 295.1892 dec= 44.9005 mag=18.93 sep=9.66".
The closest srclist source has ra= 295.1892 dec= 44.9005 mag=18.93 sep=9.66".
The closest Genie source has ra= 295.2186 dec= 44.8990 mag=18.01 sep=65.50".
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 149 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 19:40:45.42 = 295.18923
DEC(J2000) = +44:54:01.9 = 44.90052
with a 90%-confidence error radius of about 1.10 arc sec. This position is 9.66
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.93 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.16.
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?
601829245 149 WHITE srclist found no candidates.
601829245 149 WHITE image found no candidates.
List afterglow candidates for other finding charts.
601829405 309 U srclist found no candidates.
601829405 309 U image found no candidates.
601829960 864 WHITE srclist found no candidates.
601829960 864 WHITE image found no candidates.
------- Tokens for Quick GCN -------