srclist overlap message for exposure 1 of trigger 959917
uvot_overlap.pl vrs. 2010-12-20b fem started at 200307d00h40m32s155759usUT
The observation of trigger 959917 started 2020-03-06T00:21:30.0
Examining file ./959917_g605146889_uvot_sky_srclist.fits
The exposure ID is 605146889
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (101.1414,-62.0179) 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 (101.1030,-62.0050) with a radius of 3.000 arc min
This is 1.329 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 28.08 sq. arc min or 0.99 of the BAT error circle
The XRT error circle is centered at (101.1023,-62.0065) with a radius of 0.025 arc min
This is 1.294 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 1 of trigger 959917
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200307d00h40m35s470790usUT
Observation start time is 2020-03-06T00:21:30.0
Examining file ./959917_g605146889_uvot_catalog_srclist.fits
The exposure ID is 605146889
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 82 detected source(s) for 959917_g605146889
Aspect correction adds -0.00145 degrees (-0.348 sec of time = -2.45 arc sec) to RA
Aspect correction adds 0.00036 degrees ( 1.31 arcsec) to Dec
Total aspect correction is 2.78 arcsec
Star catalogs centered at 101.1287 , -62.0131 with radius 5.94 arc min.
n_usno: 685 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 80 matched entries is 0.783" for 959917_g605146889
Mean and std. dev of mag. difference (MAG_DELTA) are 1.452 and 0.472 for 959917_g605146889
Found 7 entries without IDs and 3 entries that are acceptable afterglow candidates for 959917_g605146889.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=101.1030 (06:44:24.72) DEC=-62.0050 (-62:00:18.0)
XRT distances are from RA=101.1023 (06:44:24.56) DEC=-62.0065 (-62:00:23.5)
-----------------
Entry 20 in the list of sources is a candidate afterglow for 959917_g605146889 with 3x3 stamp
ra=101.12902 (06:44:30.96) dec=-61.96284 (-61:57:46.2) +/- 1.1" mag=20.46+/-0.35
dist=163.6 REFID=79
*** The position of this source is inconsistent with the XRT position.
The position is 158.0 arc sec from the BAT position.
src: 20 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 30 in the list of sources is a candidate afterglow for 959917_g605146889 with 3x3 stamp
ra=101.11723 (06:44:28.13) dec=-62.05582 (-62:03:21.0) +/- 1.1" mag=20.40+/-0.35
dist=179.2 REFID=78
*** The position of this source is inconsistent with the XRT position.
The position is 184.5 arc sec from the BAT position.
src: 30 distr. of nearby unmatched sources: 1 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
101.1185 -62.0560 2.3 -1 USNO-B1 17.43 16.27 16.78 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 35 in the list of sources is a candidate afterglow for 959917_g605146889 with 3x3 stamp
ra=101.01075 (06:44:02.58) dec=-61.97404 (-61:58:26.6) +/- 1.1" mag=20.22+/-0.35
dist=194.1 REFID=81
*** The position of this source is inconsistent with the XRT position.
The position is 191.8 arc sec from the BAT position.
src: 35 distr. of nearby unmatched sources: 0 0 2 0 1
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
101.0177 -61.9766 14.9 -1 USNO-B1 20.07 18.98 19.46
101.0054 -61.9757 10.8 -1 USNO-B1 99.99 16.31 99.99
101.0051 -61.9747 9.8 -1 USNO-B1 13.00 12.70 12.83 *
101.0043 -61.9747 11.2 -1 USNO-B1 12.95 12.27 12.57 *
101.0052 -61.9726 10.7 -1 USNO-B1 20.21 18.73 19.39
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 959917
------ Start for Possible Stand-alone Circular ----
In response to GRB200306 (Swift/BAT trigger 959917) at 00:19:40.2 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 85 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
0.10.
------- notes for trigger 959917 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200307d00h40m39s886012usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=959917
-expid=605146889 -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/959917/
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 605146889.9844 or about 2020:066:00:21:24 UT
Found 681 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 13% of the srclist region. Found 82 sources in
srclist catalog. Found 7 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 9 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 20.94 mag. Found 95 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 10% of the
Genie image region.
Genie image analysis:
Found 34743.0 counts in the large background region of 5878.0 pixels or a rate
of 5.911 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 20.39 mag. for a
4-arcsec aperture.
Found 1202.5 counts in the XRT position region of 201.0 pixels or a rate of
5.983 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.055 +/- 0.251 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.752 cps or 20.09 mag. The closest srclist
source has ra= 101.1085 dec= -62.0045 mag=19.93 sep=12.66". The closest Genie
source has ra= 101.1079 dec= -62.0045 mag=19.47 sep=11.97".
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?
605146889 84 WHITE srclist found no candidates.
605146889 84 WHITE image found no candidates.
List afterglow candidates for other finding charts.
605147101 296 U srclist found no candidates.
605147101 296 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -62.00653
GRB_ERROR: 5
GRB_RA: 101.10233
IMAGE_START_TIME: 00:21:24
MAGNITUDE: 20.1
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT