srclist overlap message for exposure 2 of trigger 1162001
uvot_overlap.pl vrs. 2010-12-20b fem started at 230328d19h03m07s205383usUT
The observation of trigger 1162001 started 2023-03-28T15:00:45.8
Examining file ./1162001_g356_uvot_sky_srclist.fits
The exposure ID is 701708445
The exposure time is undefined.
The filter is U.
The uvot region is centered at (291.0127,80.0164) with a roll angle of 103.1
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 (290.9860,80.0160) with a radius of 3.000 arc min
This is 0.278 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 (291.0071,80.0095) with a radius of 0.035 arc min
This is 0.418 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1162001
find_uvot_ag.pl vrs. 2023-03-28 fem started at 230328d19h03m19s937899usUT
Observation start time is 2023-03-28T15:00:45.8
Examining file ./1162001_g356_uvot_catalog_srclist.fits
The exposure ID is 701708445
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 128 detected source(s) for 1162001_g356
Aspect correction adds 0.00535 degrees (1.285 sec of time = 3.34 arc sec) to RA
Aspect correction adds -0.00006 degrees (-0.20 arcsec) to Dec
Total aspect correction is 3.35 arcsec
*** WARNING -- access to usno-b1 catalog failed.
Star catalogs centered at 291.0238 , 80.0164 with radius 8.99 arc min.
n_usno: -1 n_gsc: 0
*** WARNING -- no star catalog entries found.
-- this strongly suggests a problem with the catalogs.
-- cannot check for bright stars or nearby sources.
-- there is a high risk of false positives.
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 77 matched entries is 0.958" for 1162001_g356
Mean and std. dev of mag. difference (MAG_DELTA) are 2.090 and 1.490 for 1162001_g356
Found 58 entries without IDs and 0 entries that are acceptable afterglow candidates for 1162001_g356.
Acceptable entries have no ID, XRT distances < 5.25", 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=290.9860 (19:23:56.64) DEC=80.0160 (+80:00:57.6)
XRT distances are from RA=291.0071 (19:24:01.71) DEC=80.0095 (+80:00:34.3)
*** WARNING 45 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 15:
ra=290.71571 dec= 79.97358 +/- 1.1" mag=18.92+/-0.35 dist=223.8 REFID=117
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 18.12, XRT distances < 5.25",
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 1162001
------ Start for Possible Stand-alone Circular ----
In response to GRB230328 (Swift/BAT trigger 1162001) at 14:54:48 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
326 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 19:24:01.93 = 291.00803
DEC(J2000) = +80:00:34.4 = 80.00956
with a 90%-confidence error radius of about 0.75 arc sec. This position is 0.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.32 with a 1-sigma error of about 0.20. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.070.
------- notes for trigger 1162001 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230328d19h03m37s793554usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1162001
-expid=701708445 -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/1162001/
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 701708445.84964 or about 2023:087:15:00:40 UT
Access to USNO star catalog FAILED. This increases the odds of a FALSE
afterglow detection. There was likely a PROBLEM with the srclist star catalog
because no stars found. Found 128 sources in srclist catalog. Found 58 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Access to USNO star catalog FAILED. This increases the odds of a FALSE
afterglow detection. Found 5 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 20.42 mag. Found 0 stars in largest star catalog for Genie
image region. The stars will eliminate afterglows from about 0% of the Genie
image region. The closest srclist source has ra= 290.9975 dec= 80.0068
mag=18.03 sep=11.60".
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?
701708445 325 U srclist found no candidates.
701708445 325 U 291.00803 80.00956 19.32/20.4 0.6 image Yes
List afterglow candidates for other finding charts.
701708233 113 WHITE 291.00842 80.00978 19.01/19.2 1.2 srclist Yes
701708233 113 WHITE 291.00765 80.00959 18.22/20.9 0.4 image Yes
701708976 856 ? srclist data are not available.
701708976 856 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 80.00956
GRB_ERROR: 0.75
GRB_RA: 291.00803
IMAGE_START_TIME: 15:00:40
MAGNITUDE: 19.32
MAG_ERROR: 0.20
MESSAGE_TYPE: ACK
SOURCE: XRT