srclist overlap message for exposure 1 of trigger 895503
uvot_overlap.pl vrs. 2010-12-20b fem started at 190327d23h22m27s740774usUT
The observation of trigger 895503 started 2019-03-27T23:17:45.9
Examining file 895503_g91_uvot_sky_srclist.fits
The exposure ID is 575421465
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (297.8219,39.0683) with a roll angle of 101.7
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 (297.8160,39.0700) with a radius of 3.000 arc min
This is 0.294 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 1 of trigger 895503
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190327d23h22m28s648191usUT
Observation start time is 2019-03-27T23:17:45.9
Examining file 895503_g91_uvot_catalog_srclist.fits
The exposure ID is 575421465
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 895503_g91
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 0.964
Dimmest detected source in 895503_g91 has mag 18.44
Aspect correction adds 0.00171 degrees (0.411 sec of time = 4.78 arc sec) to RA
Aspect correction adds -0.00011 degrees (-0.41 arcsec) to Dec
Total aspect correction is 4.80 arcsec
Star catalogs centered at 297.8260 , 39.0749 with radius 5.86 arc min.
n_usno: 1995 n_gsc: 0
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 9.59626
RA DEC Mag Color
bright star 0: 297.83911 (19:51:21.39) 39.05924 (+39:03:33.2) 11.70 USNO-V
bright star 1: 297.84663 (19:51:23.19) 39.01254 (+39:00:45.2) 11.11 USNO-V
bright star 2: 297.74872 (19:50:59.69) 39.02058 (+39:01:14.1) 9.60 USNO-V
bright star 3: 297.71881 (19:50:52.51) 39.04723 (+39:02:50.0) 11.51 USNO-V
bright star 4: 297.75126 (19:51:00.30) 39.14515 (+39:08:42.5) 11.76 USNO-V
bright star 5: 297.71375 (19:50:51.30) 39.10463 (+39:06:16.7) 10.69 USNO-V
bright star 6: 297.73843 (19:50:57.22) 39.01250 (+39:00:45.0) 11.32 USNO-V
bright star 7: 297.79797 (19:51:11.51) 38.97991 (+38:58:47.7) 11.29 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 181 matched entries is 0.691" for 895503_g91
Mean and std. dev of mag. difference (MAG_DELTA) are 1.855 and 0.513 for 895503_g91
Found 11 entries without IDs and 9 entries that are acceptable afterglow candidates for 895503_g91.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=297.8160 (19:51:15.84) DEC=39.0700 (+39:04:12.0)
XRT distances are as reported in catalog file.
-----------------
Entry 9 in the list of sources is a candidate afterglow for 895503_g91 with 3x3 stamp
ra=297.80425 (19:51:13.02) dec=39.07933 (+39:04:45.6) +/- 1.1" mag=17.32+/-0.35
dist=47.0 REFID=62
src: 9 distr. of nearby unmatched sources: 0 2 0 0 0
Found 6 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
297.8072 39.0824 13.8 -1 USNO-B1 17.83 16.73 17.22
297.8035 39.0797 2.4 -1 USNO-B1 14.54 99.99 99.99 *
297.8027 39.0804 5.9 -1 USNO-B1 99.99 12.30 99.99 *
297.8047 39.0844 18.3 -1 USNO-B1 19.72 18.23 18.89
297.8022 39.0801 6.2 -1 USNO-B1 18.35 12.70 15.21 *
297.8014 39.0838 18.0 -1 USNO-B1 19.06 18.08 18.51
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 13 in the list of sources is a candidate afterglow for 895503_g91 with 3x3 stamp
ra=297.80206 (19:51:12.49) dec=39.08090 (+39:04:51.2) +/- 1.1" mag=13.86+/-0.35
dist=55.3 REFID=3
src: 13 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
297.8072 39.0824 15.3 -1 USNO-B1 17.83 16.73 17.22
297.8035 39.0797 6.0 -1 USNO-B1 14.54 99.99 99.99
297.8027 39.0804 2.4 -1 USNO-B1 99.99 12.30 99.99 *
297.8047 39.0844 14.7 -1 USNO-B1 19.72 18.23 18.89
297.8022 39.0801 2.9 -1 USNO-B1 18.35 12.70 15.21 *
297.8014 39.0838 10.7 -1 USNO-B1 19.06 18.08 18.51
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 895503_g91 with 1x1 stamp
ra=297.78655 (19:51:08.77) dec=39.07720 (+39:04:37.9) +/- 1.1" mag=17.94+/-0.35
dist=86.3 REFID=184
src: 30 distr. of nearby unmatched sources: 0 1 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
297.7908 39.0813 19.1 -1 USNO-B1 99.99 18.09 99.99
297.7888 39.0795 10.4 -1 USNO-B1 19.66 18.11 18.80
297.7870 39.0782 3.9 -1 USNO-B1 16.08 14.00 14.92 *
297.7869 39.0778 2.3 -1 USNO-B1 15.25 14.46 14.81 *
297.7859 39.0826 19.5 -1 USNO-B1 15.81 14.23 14.93
297.7811 39.0756 16.4 -1 USNO-B1 18.40 17.03 17.64
297.7812 39.0795 17.1 -1 USNO-B1 16.00 14.36 15.09
297.7806 39.0758 17.3 -1 USNO-B1 19.71 99.99 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 31 in the list of sources is a candidate afterglow for 895503_g91 with 1x1 stamp
ra=297.78741 (19:51:08.98) dec=39.07939 (+39:04:45.8) +/- 1.1" mag=18.03+/-0.35
dist=86.7 REFID=143
src: 31 distr. of nearby unmatched sources: 0 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
297.7908 39.0813 11.8 -1 USNO-B1 99.99 18.09 99.99
297.7903 39.0839 18.1 -1 USNO-B1 19.67 18.25 18.88
297.7888 39.0795 4.0 -1 USNO-B1 19.66 18.11 18.80 *
297.7870 39.0782 4.4 -1 USNO-B1 16.08 14.00 14.92
297.7869 39.0778 6.0 -1 USNO-B1 15.25 14.46 14.81
297.7859 39.0826 12.2 -1 USNO-B1 15.81 14.23 14.93
297.7812 39.0795 17.5 -1 USNO-B1 16.00 14.36 15.09
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 64 in the list of sources is a candidate afterglow for 895503_g91 with 3x3 stamp
ra=297.84022 (19:51:21.65) dec=39.10490 (+39:06:17.7) +/- 1.1" mag=15.89+/-0.35
dist=142.7 REFID=105
src: 64 distr. of nearby unmatched sources: 0 0 0 2 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
297.8377 39.1013 14.9 -1 USNO-B1 18.55 17.77 18.12
297.8416 39.1031 7.7 -1 USNO-B1 19.11 17.56 18.25
297.8399 39.1054 2.1 -1 USNO-B1 12.92 12.44 12.65 *
297.8393 39.1101 18.9 -1 USNO-B1 16.76 15.46 16.04
297.8439 39.1090 18.0 -1 USNO-B1 13.16 12.29 12.68 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 78 in the list of sources is a candidate afterglow for 895503_g91 with 3x3 stamp
ra=297.78636 (19:51:08.73) dec=39.03225 (+39:01:56.1) +/- 1.1" mag=17.01+/-0.35
dist=159.2 REFID=44
src: 78 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
297.7839 39.0354 13.2 -1 USNO-B1 19.20 17.50 18.26
297.7857 39.0317 2.6 -1 USNO-B1 14.86 13.75 14.24 *
297.7882 39.0302 9.1 -1 USNO-B1 17.81 17.02 17.37
297.7879 39.0302 8.6 -1 USNO-B1 17.76 16.77 17.21
297.7873 39.0303 7.5 -1 USNO-B1 17.11 16.25 16.63
297.7894 39.0280 17.4 -1 USNO-B1 17.76 16.26 16.93
297.7797 39.0306 19.5 -1 USNO-B1 17.75 15.99 16.77
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 83 in the list of sources is a candidate afterglow for 895503_g91 with 3x3 stamp
ra=297.84401 (19:51:22.56) dec=39.10958 (+39:06:34.5) +/- 1.1" mag=14.94+/-0.35
dist=162.6 REFID=2
src: 83 distr. of nearby unmatched sources: 1 0 0 1 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
297.8399 39.1054 18.8 -1 USNO-B1 12.92 12.44 12.65 *
297.8393 39.1101 13.2 -1 USNO-B1 16.76 15.46 16.04
297.8439 39.1090 2.0 -1 USNO-B1 13.16 12.29 12.68 *
297.8504 39.1093 17.8 -1 USNO-B1 18.48 17.63 18.01
297.8405 39.1140 18.6 -1 USNO-B1 17.67 16.84 17.21
297.8449 39.1133 13.6 -1 USNO-B1 17.55 16.45 16.94
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 86 in the list of sources is a candidate afterglow for 895503_g91 with 3x3 stamp
ra=297.78402 (19:51:08.17) dec=39.03139 (+39:01:53.0) +/- 1.1" mag=17.47+/-0.35
dist=165.3 REFID=73
src: 86 distr. of nearby unmatched sources: 1 1 0 0 0
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
297.7839 39.0354 14.3 -1 USNO-B1 19.20 17.50 18.26
297.7857 39.0317 4.9 -1 USNO-B1 14.86 13.75 14.24
297.7882 39.0302 12.5 -1 USNO-B1 17.81 17.02 17.37
297.7879 39.0302 11.8 -1 USNO-B1 17.76 16.77 17.21
297.7873 39.0303 9.9 -1 USNO-B1 17.11 16.25 16.63
297.7788 39.0346 18.7 -1 USNO-B1 19.48 17.92 18.61
297.7894 39.0280 19.2 -1 USNO-B1 17.76 16.26 16.93
297.7793 39.0336 15.2 -1 USNO-B1 18.56 17.41 17.92
297.7797 39.0306 12.3 -1 USNO-B1 17.75 15.99 16.77
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 114 in the list of sources is a candidate afterglow for 895503_g91 with 1x1 stamp
ra=297.74823 (19:50:59.58) dec=39.05393 (+39:03:14.1) +/- 1.1" mag=18.41+/-0.35
dist=198.1 REFID=171
src: 114 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
297.7541 39.0569 19.7 -1 USNO-B1 19.36 18.41 18.83
297.7517 39.0512 13.8 -1 USNO-B1 16.18 15.22 15.64
297.7490 39.0553 5.5 -1 USNO-B1 15.59 14.07 14.74
297.7483 39.0502 13.3 -1 USNO-B1 18.96 17.46 18.13
297.7446 39.0544 10.4 -1 USNO-B1 19.12 18.07 18.54
297.7446 39.0537 10.2 -1 USNO-B1 19.61 18.23 18.84
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
separation of 86 and 114 is 128.8 arc sec
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.66, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 2 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 895503
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: multiple afterglow candidates
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB190327 (Swift/BAT trigger 895503) at 23:16:13 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 69 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. Processing for the 8'x8' region for
the list of sources generated on-board FAILED because of multiple afterglow
candidates. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.25.
------- notes for trigger 895503 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190327d23h22m32s510045usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=895503
-expid=575421465 -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/895503/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- no exposure found, using srclist assumed value.
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 575421465.89904 or about 2019:086:23:17:40 UT
Found 1991 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 40% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 11 srclist
source(s) without IDs. There are 2 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.66 mag. More than 1 candidate
indicates that the srclist candidates are UNRELIABLE.
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?
575421465 68 WHITE 297.78402 39.03139 17.47/18.7 165.3 srclist Yes
575421465 68 WHITE 297.74823 39.05393 18.41/18.7 198.1 srclist Yes
575421465 68 ? image data are not available.
List afterglow candidates for other finding charts.
No unique and reliable afterglow was found.
------- Tokens for Quick GCN -------