srclist overlap message for exposure 1 of trigger 931384
uvot_overlap.pl vrs. 2010-12-20b fem started at 191025d02h54m04s909649usUT
The observation of trigger 931384 started 2019-10-25T02:48:36.5
Examining file 931384_g109_uvot_sky_srclist.fits
The exposure ID is 593664516
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (320.7491,-48.3351) with a roll angle of 246.0
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 (320.7550,-48.3300) with a radius of 3.000 arc min
This is 0.388 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 931384
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191025d02h54m06s227611usUT
Observation start time is 2019-10-25T02:48:36.5
Examining file 931384_g109_uvot_catalog_srclist.fits
The exposure ID is 593664516
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 31 detected source(s) for 931384_g109
Aspect correction adds -0.00143 degrees (-0.344 sec of time = -3.43 arc sec) to RA
Aspect correction adds -0.00026 degrees (-0.92 arcsec) to Dec
Total aspect correction is 3.55 arcsec
Star catalogs centered at 320.7446 , -48.3295 with radius 5.78 arc min.
n_usno: 284 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.11946
RA DEC Mag Color
bright star 0: 320.73536 (21:22:56.49) -48.31404 (-48:18:50.5) 11.74 USNO-V
bright star 1: 320.85331 (21:23:24.79) -48.32711 (-48:19:37.6) 11.12 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 22 matched entries is 0.538" for 931384_g109
Mean and std. dev of mag. difference (MAG_DELTA) are 2.030 and 1.357 for 931384_g109
Found 9 entries without IDs and 6 entries that are acceptable afterglow candidates for 931384_g109.
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=320.7550 (21:23:01.20) DEC=-48.3300 (-48:19:48.0)
XRT distances are as reported in catalog file.
*** WARNING 29 per cent of entries have no IDs.
-----------------
Entry 4 in the list of sources is a candidate afterglow for 931384_g109 with 5x5 stamp
ra=320.78780 (21:23:09.07) dec=-48.34593 (-48:20:45.3) +/- 1.1" mag=18.52+/-0.35
dist=97.2 REFID=18
src: 4 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
320.7863 -48.3446 5.9 -1 USNO-B1 14.30 13.72 13.98
320.7900 -48.3506 17.7 -1 USNO-B1 19.91 20.17 20.05
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 931384_g109 with 5x5 stamp
ra=320.76080 (21:23:02.59) dec=-48.29282 (-48:17:34.2) +/- 1.1" mag=17.91+/-0.35
dist=134.6 REFID=13
src: 5 distr. of nearby unmatched sources: 0 1 0 0 0
Found 1 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
320.7593 -48.2918 5.1 -1 USNO-B1 13.60 13.13 13.34
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 931384_g109 with 5x5 stamp
ra=320.75939 (21:23:02.25) dec=-48.29083 (-48:17:27.0) +/- 1.1" mag=19.57+/-0.35
dist=141.4 REFID=30
src: 8 distr. of nearby unmatched sources: 0 1 0 0 0
Found 1 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
320.7593 -48.2918 3.5 -1 USNO-B1 13.60 13.13 13.34 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 9 in the list of sources is a candidate afterglow for 931384_g109 with 5x5 stamp
ra=320.73794 (21:22:57.11) dec=-48.36823 (-48:22:05.6) +/- 1.1" mag=19.83+/-0.35
dist=143.6 REFID=31
src: 9 distr. of nearby unmatched sources: 0 1 0 0 0
Found 3 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
320.7385 -48.3646 13.1 -1 USNO-B1 20.51 19.62 20.01
320.7366 -48.3685 3.4 -1 USNO-B1 20.50 19.30 19.83 *
320.7383 -48.3690 3.0 -1 USNO-B1 13.24 12.71 12.94 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 11 in the list of sources is a candidate afterglow for 931384_g109 with 5x5 stamp
ra=320.80887 (21:23:14.13) dec=-48.34799 (-48:20:52.8) +/- 1.1" mag=19.27+/-0.35
dist=144.3 REFID=29
src: 11 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
320.8080 -48.3472 3.6 -1 USNO-B1 16.00 15.15 15.53 *
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 931384_g109 with 5x5 stamp
ra=320.73984 (21:22:57.56) dec=-48.37037 (-48:22:13.3) +/- 1.1" mag=17.85+/-0.35
dist=149.8 REFID=15
src: 13 distr. of nearby unmatched sources: 0 1 0 0 0
Found 2 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
320.7366 -48.3685 10.2 -1 USNO-B1 20.50 19.30 19.83
320.7383 -48.3690 6.1 -1 USNO-B1 13.24 12.71 12.94 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
separation of 4 and 5 is 201.8 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 931384
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 GRB191025 (Swift/BAT trigger 931384) at 02:46:46 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 85 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 0.03.
------- notes for trigger 931384 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191025d02h54m07s970959usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=931384
-expid=593664516 -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/931384/
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 593664516.4512 or about 2019:298:02:48:31 UT
Found 280 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 31 sources in
srclist catalog. Found 9 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?
593664516 85 WHITE 320.76080 -48.29282 17.91/18.7 134.6 srclist Yes
593664516 85 WHITE 320.78780 -48.34593 18.52/18.7 97.2 srclist Yes
593664516 85 ? image data are not available.
List afterglow candidates for other finding charts.
No unique and reliable afterglow was found.
------- Tokens for Quick GCN -------