srclist overlap message for exposure 1 of trigger 906654
uvot_overlap.pl vrs. 2010-12-20b fem started at 190604d18h45m58s486218usUT
The observation of trigger 906654 started 2019-06-04T14:59:45.1
Examining file ./906654_g149_uvot_sky_srclist.fits
The exposure ID is 581353185
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (297.5965,-32.9328) with a roll angle of 92.9
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 (297.5870,-32.9320) with a radius of 3.000 arc min
This is 0.483 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 (297.5406,-32.9780) with a radius of 0.032 arc min
This is 3.912 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 906654
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190604d18h46m03s451286usUT
Observation start time is 2019-06-04T14:59:45.1
Examining file ./906654_g149_uvot_catalog_srclist.fits
The exposure ID is 581353185
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 110 detected source(s) for 906654_g149
Aspect correction adds 0.00202 degrees (0.485 sec of time = 6.10 arc sec) to RA
Aspect correction adds -0.00129 degrees (-4.65 arcsec) to Dec
Total aspect correction is 7.67 arcsec
Star catalogs centered at 297.5814 , -32.9471 with radius 6.86 arc min.
n_usno: 1322 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 11.03604
RA DEC Mag Color
bright star 0: 297.51590 (19:50:03.82) -32.97606 (-32:58:33.8) 11.04 USNO-V
bright star 1: 297.64006 (19:50:33.61) -32.87091 (-32:52:15.3) 11.19 USNO-V
bright star 2: 297.48800 (19:49:57.12) -33.00852 (-33:00:30.7) 11.56 USNO-V
Mean distance difference (CAT_DELTA) for 115 matched entries is 0.781" for 906654_g149
Mean and std. dev of mag. difference (MAG_DELTA) are 1.206 and 0.483 for 906654_g149
Found 3 entries without IDs and 2 entries that are acceptable afterglow candidates for 906654_g149.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=297.5870 (19:50:20.88) DEC=-32.9320 (-32:55:55.2)
XRT distances are from RA=297.5406 (19:50:09.74) DEC=-32.9780 (-32:58:40.9)
-----------------
Entry 29 in the list of sources is a candidate afterglow for 906654_g149 with 3x3 stamp
ra=297.56980 (19:50:16.75) dec=-32.93408 (-32:56:02.7) +/- 1.1" mag=17.46+/-0.35
dist=181.2 REFID=28
*** The position of this source is inconsistent with the XRT position.
The position is 52.1 arc sec from the BAT position.
src: 29 srclist_match has ID
src: 29 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
297.5699 -32.9338 1.1 -1 USNO-B1 17.50 15.05 16.14 *
297.5705 -32.9322 7.1 -1 USNO-B1 19.59 16.87 18.08
297.5646 -32.9351 16.1 -1 USNO-B1 21.75 19.56 20.53
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 57 in the list of sources is a candidate afterglow for 906654_g149 with 3x3 stamp
ra=297.59771 (19:50:23.45) dec=-32.91850 (-32:55:06.6) +/- 1.1" mag=19.15+/-0.35
dist=275.2 REFID=91
*** The position of this source is inconsistent with the XRT position.
The position is 61.4 arc sec from the BAT position.
src: 57 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
297.5982 -32.9206 7.7 -1 USNO-B1 21.03 99.99 99.99
297.5963 -32.9187 4.2 -1 USNO-B1 16.24 15.39 15.76
297.6007 -32.9203 11.2 -1 USNO-B1 19.98 19.15 19.52
*** If XRT position is correct, then this is NOT the afterglow
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 906654
------ Start for Possible Stand-alone Circular ----
In response to GRB190604 (Swift/BAT trigger 906654) at 14:57:15 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 126 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 19.6 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
0.15.
------- notes for trigger 906654 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190604d18h46m09s936432usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=906654
-expid=581353185 -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/906654/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 581353185.08046 or about 2019:155:14:59:40 UT
Found 1318 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 19% of the srclist region. Found 110 sources in
srclist catalog. Found 3 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 12 source(s) in Genie image catalog. 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 20.74 mag. Found 141 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
16% of the Genie image region.
Genie image analysis:
Found 44904.6 counts in the large background region of 5302.0 pixels or a rate
of 8.469 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 20.19 mag. for a
4-arcsec aperture.
Found 2443.2 counts in the XRT position region of 198.0 pixels or a rate of
12.339 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 4.341 +/- 0.353 (1-sigma) cps or
18.19 mag and a range from 18.10 to 18.28 mag. The 3-sigma UL at the XRT
position is 5.399 cps or 17.95 mag. The closest srclist source has ra= 297.5423
dec= -32.9812 mag=18.12 sep=12.42". The closest Genie source has ra= 297.5427
dec= -32.9812 mag=17.01 sep=13.09".
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?
581353185 126 WHITE srclist found no candidates.
581353185 126 WHITE image found no candidates.
List afterglow candidates for other finding charts.
581353397 338 U srclist found no candidates.
581353397 338 U image found no candidates.
581353928 869 WHITE srclist found no candidates.
581353928 869 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -32.97803
GRB_ERROR: 5
GRB_RA: 297.54058
IMAGE_START_TIME: 14:59:40
MAGNITUDE: 17.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT