srclist overlap message for exposure 1 of trigger 1101675
uvot_overlap.pl vrs. 2010-12-20b fem started at 220408d11h11m12s898748usUT
The observation of trigger 1101675 started 2022-04-08T05:48:25.7
Examining file ./1101675_g140_uvot_sky_srclist.fits
The exposure ID is 671089705
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (202.4010,47.0672) with a roll angle of 6.7
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 (202.4020,47.0610) with a radius of 3.000 arc min
This is 0.376 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 (202.4166,47.0691) with a radius of 0.033 arc min
This is 0.645 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 1101675
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220408d11h11m15s906988usUT
Observation start time is 2022-04-08T05:48:25.7
Examining file ./1101675_g140_uvot_catalog_srclist.fits
The exposure ID is 671089705
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 68 detected source(s) for 1101675_g140
Aspect correction adds 0.00002 degrees (0.005 sec of time = 0.05 arc sec) to RA
Aspect correction adds 0.00139 degrees ( 5.01 arcsec) to Dec
Total aspect correction is 5.01 arcsec
Star catalogs centered at 202.3816 , 47.0695 with radius 5.75 arc min.
n_usno: 313 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 19 matched entries is 0.786" for 1101675_g140
Mean and std. dev of mag. difference (MAG_DELTA) are 0.971 and 0.518 for 1101675_g140
Found 50 entries without IDs and 0 entries that are acceptable afterglow candidates for 1101675_g140.
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=202.4020 (13:29:36.48) DEC=47.0610 (+47:03:39.6)
XRT distances are from RA=202.4166 (13:29:39.98) DEC=47.0691 (+47:04:08.8)
*** WARNING 73 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 10:
ra=202.44884 dec= 47.10948 +/- 1.1" mag=20.46+/-0.35 dist=165.4 REFID=49
Found 0 entries in star catalog(s) within 10" of the XRT position.
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 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 1101675
------ Start for Possible Stand-alone Circular ----
In response to GRB220408 (Swift/BAT trigger 1101675) at 05:46:04 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 112 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 13:29:39.72 = 202.41548
DEC(J2000) = +47:04:09.5 = 47.06931
with a 90%-confidence error radius of about 0.91 arc sec. This position is 2.8
arc sec. from the center of the XRT error circle. The estimated magnitude is
20.76 with a 1-sigma error of about 0.22. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.043.
------- notes for trigger 1101675 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220408d11h11m20s038616usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1101675
-expid=671089705 -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/1101675/
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 671089705.66226 or about 2022:098:05:48:20 UT
Found 309 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 68 sources in
srclist catalog. Found 50 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 2 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.93 mag. Found 27 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 3% of the Genie image region. The
closest srclist source has ra= 202.4429 dec= 47.0479 mag=18.38 sep=100.00".
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?
671089705 111 WHITE srclist found no candidates.
671089705 111 WHITE 202.41548 47.06931 20.76/20.9 2.8 image Yes
List afterglow candidates for other finding charts.
671089918 324 U srclist found no candidates.
671089918 324 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 47.06931
GRB_ERROR: 0.91
GRB_RA: 202.41548
IMAGE_START_TIME: 05:48:20
MAGNITUDE: 20.76
MAG_ERROR: 0.22
MESSAGE_TYPE: ACK
SOURCE: XRT