srclist overlap message for exposure 1 of trigger 1061223
uvot_overlap.pl vrs. 2010-12-20b fem started at 210722d21h17m21s170346usUT
The observation of trigger 1061223 started 2021-07-22T20:56:43.6
Examining file ./1061223_g120_uvot_sky_srclist.fits
The exposure ID is 648680203
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (27.0304,-6.3560) with a roll angle of 70.5
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 (27.0230,-6.3540) with a radius of 3.000 arc min
This is 0.459 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 (27.0303,-6.3475) with a radius of 0.032 arc min
This is 0.510 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 1061223
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210722d21h17m24s682235usUT
Observation start time is 2021-07-22T20:56:43.6
Examining file ./1061223_g120_uvot_catalog_srclist.fits
The exposure ID is 648680203
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 20 detected source(s) for 1061223_g120
Aspect correction adds 0.00081 degrees (0.195 sec of time = 2.90 arc sec) to RA
Aspect correction adds -0.00109 degrees (-3.94 arcsec) to Dec
Total aspect correction is 4.89 arcsec
Star catalogs centered at 27.0275 , -6.3563 with radius 5.86 arc min.
n_usno: 187 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.9765
RA DEC Mag Color
bright star 0: 27.08286 (01:48:19.89) -6.40808 (-06:24:29.1) 11.98 USNO-V
bright star 1: 27.08342 (01:48:20.02) -6.40924 (-06:24:33.2) 11.98 USNO-V
Mean distance difference (CAT_DELTA) for 18 matched entries is 0.694" for 1061223_g120
Mean and std. dev of mag. difference (MAG_DELTA) are 1.551 and 0.890 for 1061223_g120
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1061223_g120.
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=27.0230 (01:48:05.52) DEC=-6.3540 (-06:21:14.4)
XRT distances are from RA=27.0303 (01:48:07.27) DEC=-6.3475 (-06:20:50.9)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1061223_g120 with 5x5 stamp
ra=27.03033 (01:48:07.28) dec=-6.34715 (-06:20:49.7) +/- 1.1" mag=14.58+/-0.35
dist=1.2 REFID=4
src: 0 distr. of nearby unmatched sources: 0 0 0 0 1
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)
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1061223_g120 with 5x5 stamp
ra=27.02823 (01:48:06.77) dec=-6.37193 (-06:22:19.0) +/- 1.1" mag=20.38+/-0.35
dist=88.4 REFID=20
*** The position of this source is inconsistent with the XRT position.
The position is 67.2 arc sec from the BAT position.
src: 2 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** 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:
Unmatched source ra=27.03033 (01:48:07.28) dec=-6.34715 (-06:20:49.7) +/- 1.1" mag=14.58+/-0.35 dist=1.2 REFID=4
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: 1 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 1061223
------ Start for Possible Stand-alone Circular ----
In response to GRB210722 (Swift/BAT trigger 1061223) at 20:54:42 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 94 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 01:48:07.27 = 27.03028
DEC(J2000) = -06:20:49.8 = -6.34718
with a 90%-confidence error radius of about 0.74 arc sec. This position is 1.0
arc sec. from the center of the XRT error circle. The estimated magnitude is
14.37 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.027.
------- notes for trigger 1061223 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210722d21h17m31s091182usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1061223
-expid=648680203 -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/1061223/
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 648680203.6369 or about 2021:203:20:56:38 UT
Found 183 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 20 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 3 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.61 mag. Found 39 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 5% of the Genie image region.
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?
648680203 93 WHITE 27.03033 -6.34715 14.58/19.2 1.2 srclist Yes
648680203 93 WHITE 27.03028 -6.34718 14.37/20.6 1.0 image Yes
List afterglow candidates for other finding charts.
648680417 307 U srclist found no candidates.
648680417 307 U image found no candidates.
648680969 859 WHITE 27.03035 -6.34730 15.46/19.2 0.7 srclist Yes
648680969 859 ? image data are not available.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -6.34718
GRB_ERROR: 0.74
GRB_RA: 27.03028
IMAGE_START_TIME: 20:56:38
MAGNITUDE: 14.37
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT