srclist overlap message for exposure 1 of trigger 864584
uvot_overlap.pl vrs. 2010-12-20b fem started at 180930d18h13m16s328637usUT
The observation of trigger 864584 started 2018-09-30T12:47:42.8
Examining file ./864584_g232_uvot_sky_srclist.fits
The exposure ID is 560004462
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (76.8784,-25.1361) with a roll angle of 101.4
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 (76.8700,-25.1380) with a radius of 3.000 arc min
This is 0.469 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 (76.8632,-25.1169) with a radius of 0.028 arc min
This is 1.413 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 864584
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180930d18h13m19s081648usUT
Observation start time is 2018-09-30T12:47:42.8
Examining file ./864584_g232_uvot_catalog_srclist.fits
The exposure ID is 560004462
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 59 detected source(s) for 864584_g232
Aspect correction adds 0.00095 degrees (0.227 sec of time = 3.08 arc sec) to RA
Aspect correction adds 0.00017 degrees ( 0.61 arcsec) to Dec
Total aspect correction is 3.14 arcsec
Star catalogs centered at 76.8695 , -25.1306 with radius 5.54 arc min.
n_usno: 274 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.77222
RA DEC Mag Color
bright star 0: 76.86465 (05:07:27.52) -25.14039 (-25:08:25.4) 11.77 USNO-V
Mean distance difference (CAT_DELTA) for 42 matched entries is 0.748" for 864584_g232
Mean and std. dev of mag. difference (MAG_DELTA) are 1.234 and 1.404 for 864584_g232
Found 19 entries without IDs and 2 entries that are acceptable afterglow candidates for 864584_g232.
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.
15 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=76.8700 (05:07:28.80) DEC=-25.1380 (-25:08:16.8)
XRT distances are from RA=76.8632 (05:07:27.16) DEC=-25.1169 (-25:07:01.0)
*** WARNING 32 per cent of entries have no IDs.
-----------------
Entry 22 in the list of sources is a candidate afterglow for 864584_g232 with 3x3 stamp
ra=76.86800 (05:07:28.32) dec=-25.11055 (-25:06:38.0) +/- 1.1" mag=20.62+/-0.35
dist=27.9 REFID=59
*** The position of this source is inconsistent with the XRT position.
The position is 99.0 arc sec from the BAT position.
src: 22 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 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)
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 34 in the list of sources is a candidate afterglow for 864584_g232 with 5x5 stamp
ra=76.91960 (05:07:40.70) dec=-25.11913 (-25:07:08.9) +/- 1.1" mag=19.00+/-0.35
dist=184.1 REFID=31
*** The position of this source is inconsistent with the XRT position.
The position is 175.4 arc sec from the BAT position.
src: 34 srclist_match has ID
src: 34 distr. of nearby unmatched sources: 0 0 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
76.9176 -25.1171 9.9 -1 USNO-B1 20.52 99.99 99.99
76.9193 -25.1167 8.9 -1 USNO-B1 17.33 14.71 15.87
76.9201 -25.1189 2.0 -1 USNO-B1 16.25 14.52 15.29 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
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 864584
IMAGE PROBLEM: partial overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB180930 (Swift/BAT trigger 864584) at 12:43:49 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 211 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 26% of
the XRT error circle. The typical 3-sigma upper limit has been about 19.6 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 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.02.
------- notes for trigger 864584 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180930d18h13m22s047058usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=864584
-expid=560004462 -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/864584/
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 560004462.8032 or about 2018:273:12:47:37 UT
Found 270 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 59 sources in
srclist catalog. Found 19 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 7 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 20.83 mag. Found 46 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 5% of the
Genie image region.
Genie image analysis:
Found 45809.0 counts in the large background region of 6276.0 pixels or a rate
of 7.299 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 20.27 mag. for a
4-arcsec aperture. The closest srclist source has ra= 76.8680 dec= -25.1105
mag=20.62 sep=27.87". The closest Genie source has ra= 76.8791 dec= -25.1138
mag=21.16 sep=52.95".
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?
560004462 211 WHITE srclist found no candidates.
560004462 211 WHITE image found no candidates.
List afterglow candidates for other finding charts.
560005111 860 WHITE srclist found no candidates.
560005111 860 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -25.11694
GRB_ERROR: 5
GRB_RA: 76.86317
IMAGE_START_TIME: 12:47:37
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT