srclist overlap message for exposure 2 of trigger 952791
uvot_overlap.pl vrs. 2010-12-20b fem started at 200128d00h03m25s567246usUT
The observation of trigger 952791 started 2020-01-27T14:50:05.3
Examining file ./952791_g333_uvot_sky_srclist.fits
The exposure ID is 601829405
The exposure time is undefined.
The filter is U.
The uvot region is centered at (295.1995,44.8990) 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 0.685 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 0.287 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 952791
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200128d00h03m37s340833usUT
Observation start time is 2020-01-27T14:50:05.3
Examining file ./952791_g333_uvot_catalog_srclist.fits
The exposure ID is 601829405
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 952791_g333
*** 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_g333 has mag 18.30
Aspect correction adds -0.00048 degrees (-0.115 sec of time = -1.22 arc sec) to RA
Aspect correction adds -0.00108 degrees (-3.87 arcsec) to Dec
Total aspect correction is 4.06 arcsec
Star catalogs centered at 295.1982 , 44.8960 with radius 6.18 arc min.
n_usno: 1404 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: 295.13923 (19:40:33.41) 44.94080 (+44:56:26.9) 10.30 USNO-V
bright star 3: 295.28976 (19:41:09.54) 44.89665 (+44:53:48.0) 9.58 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 119 matched entries is 0.693" for 952791_g333
Mean and std. dev of mag. difference (MAG_DELTA) are 1.201 and 0.702 for 952791_g333
Found 72 entries without IDs and 10 entries that are acceptable afterglow candidates for 952791_g333.
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.
58 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)
*** WARNING 37 per cent of entries have no IDs.
-----------------
Entry 8 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.22697 (19:40:54.47) dec=44.91483 (+44:54:53.4) +/- 1.1" mag=17.42+/-0.35
dist=101.2 REFID=82
*** The position of this source is inconsistent with the XRT position.
The position is 58.7 arc sec from the BAT position.
src: 8 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
295.2197 44.9159 19.0 -1 USNO-B1 99.99 19.48 99.99
295.2283 44.9155 4.0 -1 USNO-B1 15.08 13.86 14.40 *
295.2294 44.9179 12.6 -1 USNO-B1 17.43 16.73 17.04
295.2301 44.9180 14.1 -1 USNO-B1 18.66 17.01 17.74
295.2327 44.9180 18.5 -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 27 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.18907 (19:40:45.38) dec=44.86338 (+44:51:48.2) +/- 1.1" mag=17.37+/-0.35
dist=133.2 REFID=74
*** The position of this source is inconsistent with the XRT position.
The position is 172.7 arc sec from the BAT position.
src: 27 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 12.3 -1 USNO-B1 18.50 17.11 17.73
295.1887 44.8653 7.1 -1 USNO-B1 13.96 13.18 13.52
295.1888 44.8645 4.2 -1 USNO-B1 14.76 99.99 99.99
295.1840 44.8636 13.0 -1 USNO-B1 18.16 16.85 17.43
295.1950 44.8603 18.9 -1 USNO-B1 17.22 16.10 16.60
295.1865 44.8603 13.0 -1 USNO-B1 18.59 17.40 17.93
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 44 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.13788 (19:40:33.09) dec=44.92542 (+44:55:31.5) +/- 1.1" mag=17.95+/-0.35
dist=167.1 REFID=96
*** The position of this source is inconsistent with the XRT position.
The position is 179.9 arc sec from the BAT position.
src: 44 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 16.4 -1 USNO-B1 20.17 18.61 19.30
295.1438 44.9281 17.9 -1 USNO-B1 99.99 15.80 99.99
295.1435 44.9279 16.9 -1 USNO-B1 17.29 16.59 16.90
295.1439 44.9286 19.3 -1 USNO-B1 16.87 15.74 16.24
295.1366 44.9236 7.3 -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 18.1 -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 47 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.13611 (19:40:32.67) dec=44.92433 (+44:55:27.6) +/- 1.1" mag=17.53+/-0.35
dist=168.9 REFID=90
*** The position of this source is inconsistent with the XRT position.
The position is 183.0 arc sec from the BAT position.
src: 47 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 18.3 -1 USNO-B1 19.20 17.58 18.30
295.1366 44.9236 3.0 -1 USNO-B1 20.52 14.73 17.30 *
295.1371 44.9250 3.5 -1 USNO-B1 15.62 14.90 15.22 *
295.1285 44.9240 19.5 -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 51 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.25540 (19:41:01.30) dec=44.92928 (+44:55:45.4) +/- 1.1" mag=17.00+/-0.35
dist=190.3 REFID=38
*** The position of this source is inconsistent with the XRT position.
The position is 146.0 arc sec from the BAT position.
src: 51 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
295.2546 44.9245 17.2 -1 USNO-B1 19.97 18.37 19.08
295.2546 44.9298 2.8 -1 USNO-B1 15.25 13.71 14.40 *
295.2539 44.9304 5.4 -1 USNO-B1 99.99 13.68 99.99
295.2571 44.9293 4.3 -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 52 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.21591 (19:40:51.82) dec=44.94977 (+44:56:59.2) +/- 1.1" mag=16.51+/-0.35
dist=187.5 REFID=29
*** The position of this source is inconsistent with the XRT position.
The position is 145.8 arc sec from the BAT position.
src: 52 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 15.6 -1 USNO-B1 20.31 18.95 19.55
295.2115 44.9499 11.2 -1 USNO-B1 99.99 18.44 99.99
295.2150 44.9500 2.6 -1 USNO-B1 99.99 13.52 99.99 *
295.2143 44.9502 4.4 -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 11.5 -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 61 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.23464 (19:40:56.31) dec=44.94517 (+44:56:42.6) +/- 1.1" mag=15.85+/-0.35
dist=193.3 REFID=18
*** The position of this source is inconsistent with the XRT position.
The position is 147.4 arc sec from the BAT position.
src: 61 distr. of nearby unmatched sources: 0 1 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 13.3 -1 USNO-B1 18.37 16.67 17.42
295.2322 44.9442 7.2 -1 USNO-B1 99.99 19.54 99.99
295.2336 44.9449 2.9 -1 USNO-B1 16.82 13.41 14.93 *
295.2377 44.9435 10.0 -1 USNO-B1 15.50 99.99 99.99
295.2369 44.9440 7.1 -1 USNO-B1 14.54 13.91 14.19
295.2384 44.9465 10.6 -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 101 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.28041 (19:41:07.30) dec=44.91458 (+44:54:52.5) +/- 1.1" mag=16.06+/-0.35
dist=228.7 REFID=44
*** The position of this source is inconsistent with the XRT position.
The position is 193.0 arc sec from the BAT position.
src: 101 distr. of nearby unmatched sources: 1 1 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
295.2797 44.9123 8.3 -1 USNO-B1 20.24 19.05 19.58
295.2775 44.9195 19.2 -1 USNO-B1 20.08 19.19 19.59
295.2818 44.9111 13.2 -1 USNO-B1 20.14 19.20 19.62
295.2815 44.9142 3.1 -1 USNO-B1 14.07 13.18 13.57 *
295.2801 44.9181 12.6 -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
-----------------
Entry 103 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.28079 (19:41:07.39) dec=44.91438 (+44:54:51.8) +/- 1.1" mag=15.56+/-0.35
dist=229.5 REFID=24
*** The position of this source is inconsistent with the XRT position.
The position is 193.9 arc sec from the BAT position.
src: 103 srclist_match has ID
src: 103 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
295.2797 44.9123 7.9 -1 USNO-B1 20.24 19.05 19.58
295.2818 44.9111 12.2 -1 USNO-B1 20.14 19.20 19.62
295.2815 44.9142 1.9 -1 USNO-B1 14.07 13.18 13.57 *
295.2801 44.9181 13.5 -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
-----------------
Entry 115 in the list of sources is a candidate afterglow for 952791_g333 with 3x3 stamp
ra=295.28283 (19:41:07.88) dec=44.91372 (+44:54:49.4) +/- 1.1" mag=17.00+/-0.35
dist=234.1 REFID=56
*** The position of this source is inconsistent with the XRT position.
The position is 198.9 arc sec from the BAT position.
src: 115 distr. of nearby unmatched sources: 1 1 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
295.2797 44.9123 9.5 -1 USNO-B1 20.24 19.05 19.58
295.2818 44.9111 9.9 -1 USNO-B1 20.14 19.20 19.62
295.2815 44.9142 3.8 -1 USNO-B1 14.07 13.18 13.57 *
295.2801 44.9181 17.2 -1 USNO-B1 19.91 17.91 18.80
295.2889 44.9151 16.2 -1 USNO-B1 17.71 16.09 16.81
295.2898 44.9152 18.6 -1 USNO-B1 19.69 18.42 18.98
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
295.1895 44.9007 8.9 -1 USNO-B1 18.74 17.23 17.91
295.1911 44.9018 7.4 -1 USNO-B1 20.30 19.72 19.98
The closest star is 7.41" away.
List UVOT sources within 10" of the XRT position:
There are 1 candidate(s) outside XRT error circle with mag < 17.56
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 952791
SRCLIST PROBLEM: srclist filled telemetry buffer
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 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 250 seconds with the U filter starting
309 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. The typical 3-sigma upper limit has been about 19.2 mag. 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 18.0 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 200128d00h03m41s144172usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=952791
-expid=601829405 -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 601829405.29628 or about 2020:027:14:50:00 UT
Found 1400 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 72 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 23 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 0 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.06 mag. Found 235 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 25% of the Genie image region.
Genie image analysis:
Found 31577.1 counts in the large background region of 5347.0 pixels or a rate
of 5.906 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 19.54 mag. for a
4-arcsec aperture.
Found 1192.9 counts in the XRT position region of 198.0 pixels or a rate of
6.025 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.053 +/- 0.151 (1-sigma) cps or
21.57 mag and a range from 20.11 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.505 cps or 19.12 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.30 mag. The closest
srclist source has ra= 295.2009 dec= 44.8946 mag=17.14 sep=28.59".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 295.1896 dec= 44.9006 mag=18.92 sep=8.76". The closest Genie
source has ra= 295.1896 dec= 44.9006 mag=18.92 sep=8.76".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the srclist data with mag < 17.56 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=295.18907
(19:40:45.38), DEC=44.86338 (+44:51:48.2) (J2000). It has a mag of 17.37. It is
172.7" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 250 seconds with the U filter starting
309 seconds after the BAT trigger. There is a candidate afterglow in the list
of sources generated on-board at
RA(J2000) = 19:40:45.38 = 295.18907
DEC(J2000) = +44:51:48.2 = 44.86338
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 17.37 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.
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
309 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 19:40:45.50 = 295.18960
DEC(J2000) = +44:54:02.2 = 44.90062
with a 90%-confidence error radius of about 0.72 arc sec. This position is 8.76
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.92 with a 1-sigma error of about 0.19. 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?
601829405 309 U srclist found no candidates.
601829405 309 U image found no candidates.
List afterglow candidates for other finding charts.
601829245 149 WHITE srclist found no candidates.
601829245 149 WHITE image found no candidates.
601829960 864 WHITE srclist found no candidates.
601829960 864 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 44.90028
GRB_ERROR: 5
GRB_RA: 295.19300
IMAGE_START_TIME: 14:50:00
MAGNITUDE: 19.1
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT