srclist overlap message for exposure 3 of trigger 990358
uvot_overlap.pl vrs. 2010-12-20b fem started at 200817d02h15m28s444930usUT
The observation of trigger 990358 started 2020-08-17T02:08:23.5
Examining file 990358_g901_uvot_sky_srclist.fits
The exposure ID is 619322903
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (154.1292,-33.9169) with a roll angle of 350.5
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 (154.1310,-33.9210) with a radius of 3.000 arc min
This is 0.260 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 3 of trigger 990358
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200817d02h15m29s394362usUT
Observation start time is 2020-08-17T02:08:23.5
Examining file 990358_g901_uvot_catalog_srclist.fits
The exposure ID is 619322903
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 990358_g901
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
Dimmest detected source in 990358_g901 has mag 19.09
Aspect correction adds -0.00030 degrees (-0.071 sec of time = -0.89 arc sec) to RA
Aspect correction adds 0.00055 degrees ( 1.99 arcsec) to Dec
Total aspect correction is 2.18 arcsec
Star catalogs centered at 154.1382 , -33.9226 with radius 8.63 arc min.
n_usno: 1221 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 10.07854
RA DEC Mag Color
bright star 0: 154.16239 (10:16:38.97) -33.91751 (-33:55:03.1) 10.08 USNO-V
bright star 1: 154.17156 (10:16:41.17) -33.93304 (-33:55:59.0) 11.36 USNO-V
bright star 2: 154.19356 (10:16:46.45) -33.91610 (-33:54:58.0) 11.29 USNO-V
bright star 3: 154.06854 (10:16:16.45) -33.92523 (-33:55:30.8) 11.64 USNO-V
bright star 4: 154.11331 (10:16:27.20) -33.98837 (-33:59:18.1) 11.35 USNO-V
bright star 5: 154.24441 (10:16:58.66) -34.01970 (-34:01:10.9) 11.79 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 175 matched entries is 0.654" for 990358_g901
Mean and std. dev of mag. difference (MAG_DELTA) are 1.276 and 0.754 for 990358_g901
Found 20 entries without IDs and 1 entries that are acceptable afterglow candidates for 990358_g901.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
18 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=154.1310 (10:16:31.44) DEC=-33.9210 (-33:55:15.6)
XRT distances are as reported in catalog file.
-----------------
Entry 32 in the list of sources is a candidate afterglow for 990358_g901 with 1x1 stamp
ra=154.11182 (10:16:26.84) dec=-33.94647 (-33:56:47.3) +/- 1.1" mag=18.51+/-0.35
dist=108.1 REFID=175
src: 32 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
154.1138 -33.9457 6.6 -1 USNO-B1 15.24 13.98 14.54
154.1126 -33.9457 3.5 -1 USNO-B1 99.99 13.75 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
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.66, BAT distances < 200",
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 3 of trigger 990358
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB200817 (Swift/BAT trigger 990358) at 01:53:21 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 876 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 100% of the BAT 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 990358 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200817d02h15m31s558645usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=990358
-expid=619322903 -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/990358/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- no exposure found, using srclist assumed value.
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 619322903.4511 or about 2020:230:02:08:18 UT
Found 1217 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 11% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 20 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.66 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 19.09 mag.
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?
619322903 876 WHITE srclist found no candidates.
619322903 876 ? image data are not available.
List afterglow candidates for other finding charts.
619322114 87 WHITE srclist found no candidates.
619322114 87 WHITE image found no candidates.
619322325 298 U srclist found no candidates.
619322325 298 U image found no candidates.
------- Tokens for Quick GCN -------