srclist overlap message for exposure 1 of trigger 813771
uvot_overlap.pl vrs. 2010-12-20b fem started at 180312d00h37m05s930188usUT
The observation of trigger 813771 started 2018-03-12T00:32:12.0
Examining file 813771_g1232_uvot_sky_srclist.fits
The exposure ID is 542507532
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (275.0330,7.1959) with a roll angle of 95.1
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 (275.0250,7.1920) with a radius of 3.000 arc min
This is 0.528 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 (275.0895,7.1832) with a radius of 0.088 arc min
This is 3.451 arc min from the center of the uvot region
The area of the XRT error circle is 0.025 sq. arc min
The UVOT/XRT overlap is 0.025 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 813771
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180312d00h37m06s573177usUT
Observation start time is 2018-03-12T00:32:12.0
Examining file 813771_g1232_uvot_catalog_srclist.fits
The exposure ID is 542507532
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 813771_g1232
*** 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 813771_g1232 has mag 18.98
Aspect correction adds 0.00097 degrees (0.232 sec of time = 3.45 arc sec) to RA
Aspect correction adds -0.00006 degrees (-0.22 arcsec) to Dec
Total aspect correction is 3.46 arcsec
Star catalogs centered at 275.0365 , 7.1929 with radius 6.58 arc min.
n_usno: 2615 n_gsc: 3175
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 10.7745
RA DEC Mag Color
bright star 0: 275.09094 (18:20:21.83) 7.21634 (+07:12:58.8) 11.21 USNO-V
bright star 1: 274.95856 (18:19:50.05) 7.13042 (+07:07:49.5) 10.77 GSC-V
bright star 2: 275.13370 (18:20:32.09) 7.23838 (+07:14:18.2) 11.40 USNO-V
bright star 3: 275.05371 (18:20:12.89) 7.17657 (+07:10:35.6) 11.84 GSC-V
bright star 4: 275.02695 (18:20:06.47) 7.15007 (+07:09:00.3) 11.63 GSC-V
bright star 5: 275.03177 (18:20:07.62) 7.25504 (+07:15:18.1) 11.79 GSC-V
bright star 6: 275.05420 (18:20:13.01) 7.26443 (+07:15:52.0) 11.69 GSC-V
bright star 7: 274.99933 (18:19:59.84) 7.29293 (+07:17:34.6) 11.99 GSC-V
Mean distance difference (CAT_DELTA) for 193 matched entries is 0.704" for 813771_g1232
Mean and std. dev of mag. difference (MAG_DELTA) are 1.404 and 0.598 for 813771_g1232
Found 7 entries without IDs and 5 entries that are acceptable afterglow candidates for 813771_g1232.
Acceptable entries have no ID, XRT distances < 13.25", 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=275.0250 (18:20:06.00) DEC= 7.1920 (+07:11:31.2)
XRT distances are from RA=275.0895 (18:20:21.48) DEC= 7.1832 (+07:10:59.5)
-----------------
Entry 75 in the list of sources is a candidate afterglow for 813771_g1232 with 1x1 stamp
ra=275.02930 (18:20:07.03) dec=7.20087 (+07:12:03.1) +/- 1.1" mag=17.84+/-0.35
dist=224.2 REFID=108
*** The position of this source is inconsistent with the XRT position.
The position is 35.4 arc sec from the BAT position.
src: 75 srclist_match has ID
src: 75 distr. of nearby unmatched sources: 0 0 0 0 0
Found 15 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
275.0302 7.1975 12.4 -1 USNO-B1 18.33 16.73 17.44
275.0304 7.1998 5.6 -1 USNO-B1 17.51 15.96 16.65
275.0291 7.2003 2.0 -1 USNO-B1 15.76 15.96 15.87 *
275.0289 7.2005 2.0 -1 USNO-B1 16.84 15.52 16.11 *
275.0279 7.2004 5.2 -1 USNO-B1 17.98 99.99 99.99
275.0245 7.2011 17.0 -1 USNO-B1 18.35 16.75 17.46
275.0248 7.2037 19.1 -1 USNO-B1 18.80 17.27 17.95
275.0302 7.1975 12.6 -1 GSC2.3 16.70 17.79 17.00
275.0308 7.1996 7.1 -1 GSC2.3 16.76 17.09 17.11
275.0289 7.2007 1.6 -1 GSC2.3 14.57 16.80 14.86 *
275.0279 7.2003 5.5 -1 GSC2.3 16.84 18.18 99.99
275.0273 7.2024 9.2 -1 GSC2.3 19.36 21.01 99.99
275.0246 7.2010 16.8 -1 GSC2.3 16.72 17.76 17.20
275.0248 7.2036 18.9 -1 GSC2.3 17.28 18.39 18.10
275.0262 7.2055 19.9 -1 GSC2.3 16.31 17.24 16.59
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 102 in the list of sources is a candidate afterglow for 813771_g1232 with 3x3 stamp
ra=275.01759 (18:20:04.22) dec=7.15100 (+07:09:03.6) +/- 1.1" mag=17.04+/-0.35
dist=281.8 REFID=35
*** The position of this source is inconsistent with the XRT position.
The position is 149.9 arc sec from the BAT position.
src: 102 distr. of nearby unmatched sources: 0 0 0 0 0
Found 15 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
275.0162 7.1560 18.6 -1 USNO-B1 20.13 17.74 18.80
275.0220 7.1525 16.6 -1 USNO-B1 20.56 99.99 99.99
275.0154 7.1543 14.2 -1 USNO-B1 19.91 18.92 19.36
275.0169 7.1516 3.2 -1 USNO-B1 15.23 13.83 14.45 *
275.0197 7.1480 13.2 -1 USNO-B1 19.17 17.67 18.34
275.0133 7.1506 15.3 -1 USNO-B1 20.08 18.59 19.25
275.0163 7.1560 18.4 -1 GSC2.3 17.95 20.28 18.68
275.0220 7.1526 16.8 -1 GSC2.3 19.23 21.11 99.99
275.0177 7.1543 11.9 -1 GSC2.3 19.54 21.91 99.99
275.0155 7.1542 13.9 -1 GSC2.3 18.58 19.83 99.99
275.0213 7.1511 13.2 -1 GSC2.3 19.59 99.99 99.99
275.0169 7.1516 3.3 -1 GSC2.3 13.37 14.53 13.32 *
275.0197 7.1479 13.4 -1 GSC2.3 17.51 18.78 18.05
275.0134 7.1506 15.1 -1 GSC2.3 18.53 19.92 99.99
275.0144 7.1493 12.9 -1 GSC2.3 19.89 21.43 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
-----------------
Entry 103 in the list of sources is a candidate afterglow for 813771_g1232 with 1x1 stamp
ra=275.02538 (18:20:06.09) dec=7.13676 (+07:08:12.4) +/- 1.1" mag=18.38+/-0.35
dist=283.6 REFID=152
*** The position of this source is inconsistent with the XRT position.
The position is 198.9 arc sec from the BAT position.
src: 103 srclist_match has ID
src: 103 distr. of nearby unmatched sources: 0 0 0 0 0
Found 15 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
275.0241 7.1383 7.1 -1 USNO-B1 15.31 99.99 99.99
275.0243 7.1379 5.7 -1 USNO-B1 15.66 12.92 14.13 *
275.0249 7.1376 3.5 -1 USNO-B1 15.40 99.99 99.99 *
275.0251 7.1372 2.0 -1 USNO-B1 16.46 99.99 99.99 *
275.0222 7.1378 11.8 -1 USNO-B1 18.75 99.99 99.99
275.0220 7.1378 12.6 -1 USNO-B1 18.98 17.34 18.07
275.0227 7.1355 10.6 -1 USNO-B1 18.27 16.58 17.33
275.0267 7.1335 12.6 -1 USNO-B1 20.34 19.42 19.83
275.0276 7.1400 14.1 -1 GSC2.3 20.14 21.91 99.99
275.0240 7.1384 7.5 -1 GSC2.3 13.45 15.52 13.44
275.0220 7.1377 12.6 -1 GSC2.3 17.82 18.93 99.99
275.0254 7.1369 0.5 -1 GSC2.3 15.57 16.78 16.03 *
275.0275 7.1352 9.3 -1 GSC2.3 20.11 99.99 99.99
275.0228 7.1354 10.6 -1 GSC2.3 16.51 17.73 16.92
275.0268 7.1335 12.9 -1 GSC2.3 19.07 20.56 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
-----------------
Entry 174 in the list of sources is a candidate afterglow for 813771_g1232 with 3x3 stamp
ra=274.98503 (18:19:56.41) dec=7.22875 (+07:13:43.5) +/- 1.1" mag=16.55+/-0.35
dist=407.5 REFID=81
*** The position of this source is inconsistent with the XRT position.
The position is 194.6 arc sec from the BAT position.
src: 174 distr. of nearby unmatched sources: 0 0 0 0 0
Found 12 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
274.9889 7.2313 16.4 -1 USNO-B1 20.10 19.13 19.56
274.9865 7.2288 5.1 -1 USNO-B1 19.79 18.79 19.23
274.9848 7.2297 3.4 -1 USNO-B1 16.09 13.02 14.38 *
274.9857 7.2318 11.2 -1 USNO-B1 19.71 18.36 18.96
274.9847 7.2311 8.4 -1 USNO-B1 15.84 13.09 14.31
274.9850 7.2254 12.1 -1 GSC2.3 19.56 99.99 99.99
274.9889 7.2310 15.8 -1 GSC2.3 18.89 20.16 99.99
274.9867 7.2287 6.0 -1 GSC2.3 99.99 20.63 99.99
274.9849 7.2294 2.3 -1 GSC2.3 13.32 15.51 12.82 *
274.9828 7.2276 9.1 -1 GSC2.3 19.43 99.99 99.99
274.9845 7.2314 9.9 -1 GSC2.3 15.14 17.00 99.99
274.9805 7.2300 16.8 -1 GSC2.3 99.99 21.96 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
-----------------
Entry 183 in the list of sources is a candidate afterglow for 813771_g1232 with 1x1 stamp
ra=274.97384 (18:19:53.72) dec=7.20812 (+07:12:29.2) +/- 1.1" mag=18.03+/-0.35
dist=422.7 REFID=126
*** The position of this source is inconsistent with the XRT position.
The position is 191.7 arc sec from the BAT position.
src: 183 srclist_match has ID
src: 183 distr. of nearby unmatched sources: 0 0 0 0 0
Found 15 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
274.9785 7.2095 17.4 -1 USNO-B1 20.33 19.23 19.72
274.9747 7.2050 11.6 -1 USNO-B1 99.99 19.33 99.99
274.9733 7.2085 2.5 -1 USNO-B1 16.94 15.01 15.87 *
274.9730 7.2084 3.1 -1 USNO-B1 17.95 99.99 99.99 *
274.9731 7.2091 4.4 -1 USNO-B1 18.48 17.05 17.69
274.9730 7.2094 5.5 -1 USNO-B1 18.69 17.56 18.06
274.9728 7.2085 4.0 -1 USNO-B1 18.51 17.17 17.76
274.9792 7.2075 19.3 -1 GSC2.3 19.75 21.57 99.99
274.9785 7.2095 17.4 -1 GSC2.3 18.87 20.55 99.99
274.9764 7.2040 17.3 -1 GSC2.3 20.01 22.09 99.99
274.9755 7.2054 11.6 -1 GSC2.3 19.08 21.88 99.99
274.9747 7.2123 15.3 -1 GSC2.3 19.30 21.25 99.99
274.9734 7.2084 1.8 -1 GSC2.3 14.91 16.75 15.20 *
274.9731 7.2096 5.9 -1 GSC2.3 99.99 99.99 99.99
274.9724 7.2084 5.4 -1 GSC2.3 99.99 18.94 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
Found 5 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
275.0886 7.1818 6.0 -1 USNO-B1 17.31 15.38 16.24
275.0920 7.1827 9.1 -1 USNO-B1 20.32 18.74 19.44
275.0873 7.1833 7.7 -1 GSC2.3 20.22 21.37 99.99
275.0886 7.1818 6.1 -1 GSC2.3 14.99 16.84 15.25
275.0920 7.1826 9.3 -1 GSC2.3 18.58 20.31 99.99
The closest star is 6.01" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=275.08862 (18:20:21.27) dec=7.18189 (+07:10:54.8) +/- 1.1" mag=17.65+/-0.35 dist=5.7 REFID=87
Matched source ra=275.09139 (18:20:21.93) dec=7.18516 (+07:11:06.6) +/- 1.1" mag=13.86+/-0.35 dist=9.8 REFID=4
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 < 13.25",
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 1 of trigger 813771
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.
------ Start for Possible Stand-alone Circular ----
In response to GRB180312 (Swift/BAT trigger 813771) at 00:11:39 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1212 seconds after the BAT trigger. No credible afterglow candidate
has been found in the initial data products. Results 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
expected extinction corresponding to E(B-V) of 0.23.
------- notes for trigger 813771 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180312d00h37m14s892332usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=813771
-expid=542507532 -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/813771/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. BAT position found.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 542507532.02426 or about 2018:071:00:32:07 UT
Found 3090 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 49% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 7 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.98 mag.
Found 2 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 275.0886 dec= 7.1819 mag=17.65 sep=5.69".
The closest srclist source has ra= 275.0886 dec= 7.1819 mag=17.65 sep=5.69".
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 150 seconds with the White filter
starting 1212 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 18:20:21.27 = 275.08862
DEC(J2000) = +07:10:54.8 = 7.18189
with a 90%-confidence error radius of about 1.10 arc sec. This position is 5.69
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.65 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.23.
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?
542507532 1212 WHITE srclist found no candidates.
542507532 1212 WHITE image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------