srclist overlap message for exposure 2 of trigger 1004219
uvot_overlap.pl vrs. 2010-12-20b fem started at 201105d02h39m02s181091usUT
The observation of trigger 1004219 started 2020-11-05T02:27:38.4
Examining file ./1004219_g334_uvot_sky_srclist.fits
The exposure ID is 626236058
The exposure time is undefined.
The filter is U.
The uvot region is centered at (277.6760,-6.7563) with a roll angle of 255.5
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 (277.6790,-6.7540) with a radius of 3.000 arc min
This is 0.222 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 (277.6736,-6.7550) with a radius of 0.038 arc min
This is 0.163 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1004219
find_uvot_ag.pl vrs. 2020-10-30 fem started at 201105d02h39m14s090825usUT
Observation start time is 2020-11-05T02:27:38.4
Examining file ./1004219_g334_uvot_catalog_srclist.fits
The exposure ID is 626236058
The exposure is 249.930 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1004219_g334
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1004219_g334 has mag 18.30
Aspect correction adds -0.00003 degrees (-0.008 sec of time = -0.12 arc sec) to RA
Aspect correction adds -0.00043 degrees (-1.54 arcsec) to Dec
Total aspect correction is 1.55 arcsec
Star catalogs centered at 277.6747 , -6.7570 with radius 8.68 arc min.
n_usno: 5005 n_gsc: 0
*** WARNING -- bright star catalog has 10 entries brighter than 12 mag
The brightest has mag 10.63288
RA DEC Mag Color
bright star 0: 277.64114 (18:30:33.87) -6.72263 (-06:43:21.5) 12.00 USNO-R
bright star 1: 277.64008 (18:30:33.62) -6.72227 (-06:43:20.2) 11.80 USNO-R
bright star 2: 277.62251 (18:30:29.40) -6.73027 (-06:43:49.0) 11.75 USNO-R
bright star 3: 277.71620 (18:30:51.89) -6.83105 (-06:49:51.8) 11.92 USNO-V
bright star 4: 277.76444 (18:31:03.47) -6.71431 (-06:42:51.5) 10.63 USNO-V
bright star 5: 277.63296 (18:30:31.91) -6.66255 (-06:39:45.2) 11.50 USNO-V
bright star 6: 277.60761 (18:30:25.83) -6.84238 (-06:50:32.6) 11.62 USNO-V
bright star 7: 277.61491 (18:30:27.58) -6.85297 (-06:51:10.7) 11.94 USNO-V
bright star 8: 277.72046 (18:30:52.91) -6.86783 (-06:52:04.2) 11.81 USNO-V
bright star 9: 277.68832 (18:30:45.20) -6.88788 (-06:53:16.4) 12.00 USNO-V
Mean distance difference (CAT_DELTA) for 165 matched entries is 0.909" for 1004219_g334
Mean and std. dev of mag. difference (MAG_DELTA) are 2.691 and 0.697 for 1004219_g334
Found 35 entries without IDs and 5 entries that are acceptable afterglow candidates for 1004219_g334.
Acceptable entries have no ID, XRT distances < 5.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
11 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=277.6790 (18:30:42.96) DEC=-6.7540 (-06:45:14.4)
XRT distances are from RA=277.6736 (18:30:41.67) DEC=-6.7550 (-06:45:17.9)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1004219_g334 with 3x3 stamp
ra=277.67399 (18:30:41.76) dec=-6.75296 (-06:45:10.6) +/- 1.1" mag=17.18+/-0.35
dist=7.4 REFID=77
*** The position of this source is inconsistent with the XRT position.
The position is 18.3 arc sec from the BAT position.
src: 0 distr. of nearby unmatched sources: 1 0 0 0 0
Found 8 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
277.6734 -6.7575 16.4 -1 USNO-B1 16.32 14.69 15.41
277.6770 -6.7571 18.3 -1 USNO-B1 19.23 16.98 17.98
277.6734 -6.7536 3.1 -1 USNO-B1 15.05 13.09 13.96 *
277.6769 -6.7520 11.0 -1 USNO-B1 19.09 16.06 17.41
277.6715 -6.7516 10.1 -1 USNO-B1 19.07 16.75 17.78
277.6696 -6.7529 15.6 -1 USNO-B1 18.20 15.30 16.59
277.6694 -6.7519 16.7 -1 USNO-B1 99.99 17.14 99.99
277.6710 -6.7502 14.7 -1 USNO-B1 17.08 14.48 15.64
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 20 in the list of sources is a candidate afterglow for 1004219_g334 with 1x1 stamp
ra=277.70318 (18:30:48.76) dec=-6.72532 (-06:43:31.1) +/- 1.1" mag=18.04+/-0.35
dist=150.2 REFID=147
*** The position of this source is inconsistent with the XRT position.
The position is 134.7 arc sec from the BAT position.
src: 20 distr. of nearby unmatched sources: 1 0 0 0 0
Found 14 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
277.7016 -6.7302 18.7 -1 USNO-B1 16.91 13.97 15.28
277.7020 -6.7287 12.9 -1 USNO-B1 17.27 14.88 15.94
277.7010 -6.7268 9.5 -1 USNO-B1 17.75 99.99 99.99
277.7049 -6.7303 18.9 -1 USNO-B1 15.32 12.69 13.86 *
277.7048 -6.7293 15.5 -1 USNO-B1 16.30 13.56 14.78
277.7052 -6.7297 17.2 -1 USNO-B1 20.38 12.40 15.94 *
277.7021 -6.7258 4.2 -1 USNO-B1 15.37 12.65 13.86 *
277.7022 -6.7254 3.6 -1 USNO-B1 16.00 99.99 99.99 *
277.7005 -6.7217 16.0 -1 USNO-B1 19.19 16.99 17.97
277.7077 -6.7265 16.8 -1 USNO-B1 19.46 99.99 99.99
277.7077 -6.7258 16.1 -1 USNO-B1 18.27 14.10 15.95
277.7061 -6.7237 12.0 -1 USNO-B1 17.95 14.67 16.12
277.7043 -6.7204 18.2 -1 USNO-B1 18.73 18.09 18.37
277.7060 -6.7209 18.7 -1 USNO-B1 19.68 16.92 18.15
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 33 in the list of sources is a candidate afterglow for 1004219_g334 with 1x1 stamp
ra=277.68480 (18:30:44.35) dec=-6.80187 (-06:48:06.7) +/- 1.1" mag=18.30+/-0.35
dist=173.5 REFID=187
*** The position of this source is inconsistent with the XRT position.
The position is 173.6 arc sec from the BAT position.
src: 33 distr. of nearby unmatched sources: 1 1 0 0 0
Found 6 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
277.6852 -6.7966 19.0 -1 USNO-B1 19.09 15.75 17.24
277.6810 -6.7979 19.6 -1 USNO-B1 18.99 16.24 17.46
277.6876 -6.7994 13.3 -1 USNO-B1 19.32 18.47 18.85
277.6863 -6.8016 5.6 -1 USNO-B1 19.30 16.15 17.55
277.6848 -6.8030 4.0 -1 USNO-B1 13.68 11.88 12.68 *
277.6862 -6.8052 13.1 -1 USNO-B1 20.75 17.20 18.78
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 34 in the list of sources is a candidate afterglow for 1004219_g334 with 1x1 stamp
ra=277.68486 (18:30:44.37) dec=-6.80217 (-06:48:07.8) +/- 1.1" mag=17.40+/-0.35
dist=174.6 REFID=162
*** The position of this source is inconsistent with the XRT position.
The position is 174.7 arc sec from the BAT position.
src: 34 distr. of nearby unmatched sources: 1 1 0 0 0
Found 4 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
277.6876 -6.7994 13.9 -1 USNO-B1 19.32 18.47 18.85
277.6863 -6.8016 5.7 -1 USNO-B1 19.30 16.15 17.55
277.6848 -6.8030 2.9 -1 USNO-B1 13.68 11.88 12.68 *
277.6862 -6.8052 12.0 -1 USNO-B1 20.75 17.20 18.78
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 41 in the list of sources is a candidate afterglow for 1004219_g334 with 1x1 stamp
ra=277.68424 (18:30:44.22) dec=-6.80390 (-06:48:14.1) +/- 1.1" mag=17.96+/-0.35
dist=180.2 REFID=129
*** The position of this source is inconsistent with the XRT position.
The position is 180.6 arc sec from the BAT position.
src: 41 distr. of nearby unmatched sources: 0 2 0 0 0
Found 3 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
277.6863 -6.8016 11.2 -1 USNO-B1 19.30 16.15 17.55
277.6848 -6.8030 3.9 -1 USNO-B1 13.68 11.88 12.68 *
277.6862 -6.8052 8.5 -1 USNO-B1 20.75 17.20 18.78
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 2 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
277.6734 -6.7575 9.0 -1 USNO-B1 16.32 14.69 15.41
277.6734 -6.7536 5.0 -1 USNO-B1 15.05 13.09 13.96
The closest star is 4.97" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=277.67399 (18:30:41.76) dec=-6.75296 (-06:45:10.6) +/- 1.1" mag=17.18+/-0.35 dist=7.4 REFID=77
Matched source ra=277.67353 (18:30:41.65) dec=-6.75734 (-06:45:26.4) +/- 1.1" mag=17.96+/-0.35 dist=8.5 REFID=158
Matched source ra=277.67359 (18:30:41.66) dec=-6.75764 (-06:45:27.5) +/- 1.1" mag=17.89+/-0.35 dist=9.6 REFID=134
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 < 5.75",
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 1004219
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: high density of stars, srclist filled telemetry buffer
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB201105 (Swift/BAT trigger 1004219) at 02:22:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
309 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 XRT error circle. Because of the density of
catalogued stars, further analysis is required to report an upper limit for any
afterglow in the region. No correction has been made for the large, but
uncertain, extinction expected.
------- notes for trigger 1004219 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 201105d02h39m21s439884usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1004219
-expid=626236058 -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/1004219/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for srclist. BAT position found.
UVOT exposure began at MET 626236058.4094 or about 2020:310:02:27:33 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 46% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 35 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.30 mag.
Found 3 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 277.6740 dec= -6.7530 mag=17.18 sep=7.36".
The closest srclist source has ra= 277.6740 dec= -6.7530 mag=17.18 sep=7.36".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 250 seconds with the U filter starting
309 seconds after the BAT trigger. There is a candidate afterglow in the list
of sources generated on-board at
RA(J2000) = 18:30:41.76 = 277.67399
DEC(J2000) = -06:45:10.7 = -6.75296
with a 90%-confidence error radius of about 1.10 arc sec. This position is 7.36
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.18 with a 1-sigma error of about 0.35. No correction has been made for the
large, but uncertain, extinction expected.
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?
626236058 308 U srclist found no candidates.
626236058 308 ? image data are not available.
List afterglow candidates for other finding charts.
626235846 96 WHITE srclist found no candidates.
626235846 96 WHITE image found no candidates.
------- Tokens for Quick GCN -------