srclist overlap message for exposure 2 of trigger 904394
uvot_overlap.pl vrs. 2010-12-20b fem started at 190519d16h46m08s252500usUT
The observation of trigger 904394 started 2019-05-19T07:40:16.2
Examining file ./904394_g876_uvot_sky_srclist.fits
The exposure ID is 579944416
The exposure time is undefined.
The filter is U.
The uvot region is centered at (114.7611,-38.8024) with a roll angle of 305.1
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (114.7640,-38.8240) with a radius of 3.000 arc min
This is 1.302 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 (114.7676,-38.8054) with a radius of 0.027 arc min
This is 0.353 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 904394
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190519d16h46m17s078183usUT
Observation start time is 2019-05-19T07:40:16.2
Examining file ./904394_g876_uvot_catalog_srclist.fits
The exposure ID is 579944416
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 904394_g876
*** 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 904394_g876 has mag 18.41
Aspect correction adds -0.00096 degrees (-0.231 sec of time = -2.70 arc sec) to RA
Aspect correction adds 0.00050 degrees ( 1.80 arcsec) to Dec
Total aspect correction is 3.24 arcsec
Star catalogs centered at 114.7644 , -38.8035 with radius 8.69 arc min.
n_usno: 3489 n_gsc: 0
*** WARNING -- bright star catalog has 13 entries brighter than 12 mag
The brightest has mag 6.24824
RA DEC Mag Color
bright star 0: 114.70208 (07:38:48.50) -38.78972 (-38:47:23.0) 10.66 USNO-V
bright star 1: 114.83108 (07:39:19.46) -38.75432 (-38:45:15.5) 10.20 USNO-V
bright star 2: 114.82524 (07:39:18.06) -38.74672 (-38:44:48.2) 10.67 USNO-V
bright star 3: 114.84639 (07:39:23.13) -38.74677 (-38:44:48.4) 11.37 USNO-R
bright star 4: 114.84674 (07:39:23.22) -38.74579 (-38:44:44.8) 11.86 USNO-V
bright star 5: 114.67989 (07:38:43.17) -38.73907 (-38:44:20.7) 11.37 USNO-V
bright star 6: 114.64147 (07:38:33.95) -38.79753 (-38:47:51.1) 9.96 USNO-V
bright star 7: 114.63558 (07:38:32.54) -38.78149 (-38:46:53.4) 6.25 USNO-V
bright star 8: 114.87317 (07:39:29.56) -38.86395 (-38:51:50.2) 8.09 USNO-V
bright star 9: 114.62781 (07:38:30.67) -38.80686 (-38:48:24.7) 11.73 USNO-V
bright star 10: 114.78534 (07:39:08.48) -38.69456 (-38:41:40.4) 11.74 USNO-V
bright star 11: 114.61484 (07:38:27.56) -38.78159 (-38:46:53.7) 11.37 USNO-V
bright star 12: 114.94263 (07:39:46.23) -38.76358 (-38:45:48.9) 11.89 USNO-V
Mean distance difference (CAT_DELTA) for 98 matched entries is 0.917" for 904394_g876
Mean and std. dev of mag. difference (MAG_DELTA) are 2.486 and 0.974 for 904394_g876
Found 98 entries without IDs and 3 entries that are acceptable afterglow candidates for 904394_g876.
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.
75 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=114.7640 (07:39:03.36) DEC=-38.8240 (-38:49:26.4)
XRT distances are from RA=114.7676 (07:39:04.22) DEC=-38.8054 (-38:48:19.4)
*** WARNING 51 per cent of entries have no IDs.
-----------------
Entry 2 in the list of sources is a candidate afterglow for 904394_g876 with 3x3 stamp
ra=114.76534 (07:39:03.68) dec=-38.77260 (-38:46:21.4) +/- 1.1" mag=17.14+/-0.35
dist=118.2 REFID=62
*** The position of this source is inconsistent with the XRT position.
The position is 185.1 arc sec from the BAT position.
src: 2 distr. of nearby unmatched sources: 2 1 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
114.7591 -38.7740 18.4 -1 USNO-B1 19.62 18.34 18.91
114.7653 -38.7719 2.4 -1 USNO-B1 14.06 12.53 13.21 *
114.7702 -38.7722 13.7 -1 USNO-B1 20.40 18.20 19.18
114.7657 -38.7717 3.2 -1 USNO-B1 14.35 12.40 13.27 *
114.7675 -38.7701 10.9 -1 USNO-B1 19.33 18.30 18.76
114.7615 -38.7700 14.3 -1 USNO-B1 20.79 19.36 20.00
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 904394_g876 with 3x3 stamp
ra=114.76467 (07:39:03.52) dec=-38.77062 (-38:46:14.2) +/- 1.1" mag=17.66+/-0.35
dist=125.5 REFID=91
*** The position of this source is inconsistent with the XRT position.
The position is 192.2 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 1 2 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
114.7591 -38.7740 19.9 -1 USNO-B1 19.62 18.34 18.91
114.7653 -38.7719 5.1 -1 USNO-B1 14.06 12.53 13.21 *
114.7702 -38.7722 16.4 -1 USNO-B1 20.40 18.20 19.18
114.7657 -38.7717 4.9 -1 USNO-B1 14.35 12.40 13.27 *
114.7675 -38.7701 8.2 -1 USNO-B1 19.33 18.30 18.76
114.7615 -38.7700 9.1 -1 USNO-B1 20.79 19.36 20.00
114.7715 -38.7698 19.4 -1 USNO-B1 19.59 17.23 18.28
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 904394_g876 with 3x3 stamp
ra=114.79491 (07:39:10.78) dec=-38.77403 (-38:46:26.5) +/- 1.1" mag=17.78+/-0.35
dist=136.5 REFID=104
*** The position of this source is inconsistent with the XRT position.
The position is 199.7 arc sec from the BAT position.
src: 8 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
114.7954 -38.7792 18.5 -1 USNO-B1 19.95 18.18 18.97
114.7951 -38.7756 5.6 -1 USNO-B1 14.54 12.78 13.56 *
114.7953 -38.7754 5.0 -1 USNO-B1 14.76 12.47 13.49 *
114.7977 -38.7690 19.7 -1 USNO-B1 99.99 16.77 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
Found 3 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
114.7648 -38.8039 9.4 -1 USNO-B1 20.67 18.49 19.46
114.7682 -38.8051 2.1 -1 USNO-B1 19.04 18.00 18.46
114.7703 -38.8061 8.2 -1 USNO-B1 18.51 16.72 17.51
The closest star is 2.10" away.
List UVOT sources within 10" of the XRT position:
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 17.84, 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 904394
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB190519 (Swift/BAT trigger 904394) at 07:25:39 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the U filter starting
853 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
0.42.
------- notes for trigger 904394 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190519d16h46m23s267555usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=904394
-expid=579944416 -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/904394/
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 579944416.22818 or about 2019:139:07:40:11 UT
Found 3485 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 32% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 98 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 17.84 mag.
Found 13 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 19.85 mag. Found 238 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
28% of the Genie image region.
Genie image analysis:
Found 18101.9 counts in the large background region of 5800.0 pixels or a rate
of 3.121 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 19.33 mag. for a
4-arcsec aperture.
Found 649.9 counts in the XRT position region of 202.0 pixels or a rate of
3.217 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.081 +/- 0.184 (1-sigma) cps or
21.11 mag and a range from 19.82 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.632 cps or 18.88 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.41 mag. The closest
srclist source has ra= 114.7914 dec= -38.8079 mag=17.47 sep=67.47". The closest
Genie source has ra= 114.7670 dec= -38.7987 mag=17.47 sep=24.26".
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?
579944416 853 U srclist found no candidates.
579944416 853 U image found no candidates.
List afterglow candidates for other finding charts.
579943712 149 ? srclist data are not available.
579943712 149 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -38.80539
GRB_ERROR: 5
GRB_RA: 114.76758
IMAGE_START_TIME: 07:40:11
MAGNITUDE: 18.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT