image overlap message for exposure 1 of trigger 811235
uvot_overlap.pl vrs. 2010-12-20b fem started at 180222d18h03m23s755834usUT
The observation of trigger 811235 started 2018-02-22T13:11:46.6
Examining file ./811235_g102_uvot_sky_image.fits
The exposure ID is 540997906
The exposure time is 149.879 (seconds)
The filter is WHITE.
The uvot region is centered at (256.5755,-36.8049) with a roll angle of 91.8
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (256.5710,-36.8030) with a radius of 3.000 arc min
This is 0.244 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (256.5418,-36.8121) with a radius of 0.113 arc min
This is 1.673 arc min from the center of the uvot region
The area of the XRT error circle is 0.040 sq. arc min
The UVOT/XRT overlap is 0.040 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 811235
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180222d18h03m40s887997usUT
Observation start time is 2018-02-22T13:11:46.6
Examining file ./811235_g102_uvot_catalog_image.fits
The exposure ID is 540997906
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 52 detected source(s) for 811235_g102
Aspect correction adds 0.00068 degrees (0.163 sec of time = 1.96 arc sec) to RA
Aspect correction adds -0.00195 degrees (-7.02 arcsec) to Dec
Total aspect correction is 7.28 arcsec
Star catalogs centered at 256.5721 , -36.8044 with radius 2.72 arc min.
n_usno: 957 n_gsc: 718
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 51 matched entries is 0.675" for 811235_g102
Mean and std. dev of mag. difference (MAG_DELTA) are 1.159 and 0.849 for 811235_g102
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 811235_g102.
Acceptable entries have no ID, XRT distances < 15", 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=256.5710 (17:06:17.04) DEC=-36.8030 (-36:48:10.8)
XRT distances are from RA=256.5418 (17:06:10.03) DEC=-36.8121 (-36:48:43.4)
-----------------
Entry 20 in the list of sources is a candidate afterglow for 811235_g102 with genie
ra=256.57211 (17:06:17.31) dec=-36.81681 (-36:49:00.5) +/- 0.6" mag=18.53+/-0.15
dist=89.0 REFID=45 major=1.0 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 49.8 arc sec from the BAT position.
Found 22 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
256.5693 -36.8127 16.8 -1 USNO-B1 19.76 16.89 18.16
256.5672 -36.8132 19.4 -1 USNO-B1 21.64 18.79 20.06
256.5715 -36.8152 6.1 -1 USNO-B1 19.73 17.13 18.28
256.5730 -36.8162 3.5 -1 USNO-B1 19.06 15.27 16.95
256.5731 -36.8165 3.1 -1 USNO-B1 18.98 16.96 17.86 *
256.5683 -36.8162 11.2 -1 USNO-B1 18.79 16.05 17.27
256.5758 -36.8166 10.7 -1 USNO-B1 21.71 17.37 19.30
256.5652 -36.8165 19.9 -1 USNO-B1 99.99 19.14 99.99
256.5674 -36.8178 14.0 -1 USNO-B1 21.94 17.24 19.33
256.5729 -36.8191 8.5 -1 USNO-B1 21.50 17.75 19.41
256.5743 -36.8205 14.7 -1 USNO-B1 21.29 17.56 19.22
256.5742 -36.8217 18.6 -1 USNO-B1 21.63 17.64 19.41
256.5693 -36.8127 16.8 -1 GSC2.3 16.92 20.27 99.99
256.5671 -36.8131 19.6 -1 GSC2.3 17.93 99.99 99.99
256.5713 -36.8151 6.6 -1 GSC2.3 17.13 20.05 16.42
256.5738 -36.8163 5.2 -1 GSC2.3 17.65 99.99 99.99
256.5683 -36.8161 11.3 -1 GSC2.3 16.12 18.92 16.76
256.5722 -36.8168 0.2 -1 GSC2.3 16.10 19.44 17.02 *
256.5760 -36.8169 11.1 -1 GSC2.3 17.50 99.99 99.99
256.5673 -36.8178 14.4 -1 GSC2.3 17.42 99.99 99.99
256.5728 -36.8191 8.4 -1 GSC2.3 17.75 99.99 99.99
256.5739 -36.8210 15.9 -1 GSC2.3 17.47 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 47 in the list of sources is a candidate afterglow for 811235_g102 with genie
ra=256.57957 (17:06:19.10) dec=-36.82640 (-36:49:35.1) +/- 0.6" mag=18.27+/-0.15
dist=120.5 REFID=52 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 87.8 arc sec from the BAT position.
Found 25 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
256.5757 -36.8226 17.7 -1 USNO-B1 21.84 18.67 20.08
256.5783 -36.8235 11.1 -1 USNO-B1 99.99 19.33 99.99
256.5815 -36.8237 11.2 -1 USNO-B1 99.99 16.81 99.99
256.5824 -36.8242 11.5 -1 USNO-B1 19.46 15.36 17.18
256.5744 -36.8267 14.9 -1 USNO-B1 21.28 16.41 18.57
256.5730 -36.8273 19.2 -1 USNO-B1 17.59 16.04 16.73
256.5747 -36.8281 15.3 -1 USNO-B1 99.99 17.60 99.99
256.5808 -36.8272 4.6 -1 USNO-B1 99.99 16.09 99.99
256.5791 -36.8281 6.3 -1 USNO-B1 21.49 16.14 18.52
256.5830 -36.8291 13.9 -1 USNO-B1 18.83 18.05 18.40
256.5805 -36.8299 13.1 -1 USNO-B1 99.99 18.39 99.99
256.5855 -36.8288 19.0 -1 USNO-B1 21.46 16.79 18.86
256.5850 -36.8292 18.6 -1 USNO-B1 19.67 17.14 18.26
256.5792 -36.8317 19.0 -1 USNO-B1 99.99 19.89 99.99
256.5757 -36.8226 17.8 -1 GSC2.3 18.02 99.99 99.99
256.5781 -36.8235 11.2 -1 GSC2.3 18.22 99.99 99.99
256.5809 -36.8236 10.8 -1 GSC2.3 17.37 99.99 99.99
256.5825 -36.8242 11.5 -1 GSC2.3 15.90 19.75 17.48
256.5747 -36.8263 13.9 -1 GSC2.3 17.10 99.99 99.99
256.5771 -36.8267 7.1 -1 GSC2.3 18.24 99.99 99.99
256.5800 -36.8266 1.6 -1 GSC2.3 15.54 19.00 17.19 *
256.5753 -36.8286 14.7 -1 GSC2.3 18.22 99.99 99.99
256.5817 -36.8277 7.7 -1 GSC2.3 99.99 99.99 99.99
256.5856 -36.8285 19.0 -1 GSC2.3 17.64 99.99 99.99
256.5802 -36.8301 13.6 -1 GSC2.3 18.16 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 49 in the list of sources is a candidate afterglow for 811235_g102 with genie
ra=256.54399 (17:06:10.56) dec=-36.81640 (-36:48:59.0) +/- 0.6" mag=17.12+/-0.14
dist=16.9 REFID=43 major=0.4 minor=0.3 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 91.6 arc sec from the BAT position.
This source is near the edge of image (1.022)
Found 11 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
256.5493 -36.8170 15.4 -1 USNO-B1 99.99 20.93 99.99
256.5476 -36.8165 10.3 -1 USNO-B1 99.99 20.55 99.99
256.5461 -36.8198 13.7 -1 USNO-B1 99.99 19.40 99.99
256.5418 -36.8140 10.5 -1 USNO-B1 20.16 17.42 18.64
256.5431 -36.8168 2.9 -1 USNO-B1 14.17 11.94 12.93 *
256.5447 -36.8195 11.2 -1 USNO-B1 19.24 19.96 19.64
256.5432 -36.8212 17.6 -1 USNO-B1 99.99 20.93 99.99
256.5429 -36.8211 17.1 -1 USNO-B1 99.99 20.93 99.99
256.5460 -36.8199 13.9 -1 GSC2.3 18.21 99.99 99.99
256.5435 -36.8168 2.2 -1 GSC2.3 11.65 13.47 12.40 *
256.5417 -36.8139 11.2 -1 GSC2.3 17.61 99.99 17.70
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 4 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
256.5427 -36.8108 5.2 -1 USNO-B1 21.89 18.99 20.28
256.5418 -36.8140 7.1 -1 USNO-B1 20.16 17.42 18.64
256.5425 -36.8109 4.8 -1 GSC2.3 18.21 99.99 99.99
256.5417 -36.8139 6.5 -1 GSC2.3 17.61 99.99 17.70
The closest star is 4.81" away.
List UVOT sources within 10" of the XRT position:
There are 1.0152898E+05 counts in the bkg source region of 4307.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 23.573 counts/pixel (5-sig UL in 4" is 19.63 mag) for 811235_g102
There are 4966.1416 counts in the xrt source region of 197.00000 pixels.
Rate in xrt region with 8 arcsec radius is 25.209 counts/pixel for 811235_g102
XRT source is too far (100.528075329461") from center -- do not compute local background.
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 20.19, XRT distances < 15",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 811235_540997906_180222d18h03m40s887997usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(256.5755,-36.8049,45")
fk5;-circle(256.569651859098,-36.8061731911786,6")
fk5;-circle(256.573070157137,-36.8067305176631,6")
fk5;-circle(256.564000221993,-36.8029262407058,6")
fk5;-circle(256.567021742396,-36.808230463475,6")
fk5;-circle(256.570156435477,-36.8107590747884,6")
fk5;-circle(256.561801840994,-36.8000239108021,6")
fk5;-circle(256.574188066148,-36.7951588314982,6")
fk5;-circle(256.564588546547,-36.7961085761471,6")
fk5;-circle(256.5775498519,-36.7952547922583,6")
fk5;-circle(256.569253790269,-36.8126041204421,6")
fk5;-circle(256.558629674751,-36.8041216187262,6")
fk5;-circle(256.560049066061,-36.8087860333203,6")
fk5;-circle(256.572375672414,-36.7921247582989,6")
fk5;-circle(256.581588633384,-36.7956063667871,6")
fk5;-circle(256.571403128358,-36.8152957603467,6")
fk5;-circle(256.583659397253,-36.795096777251,6")
fk5;-circle(256.5684074835,-36.8160639400799,6")
fk5;-circle(256.581187221396,-36.8135443280439,6")
fk5;-circle(256.572105759282,-36.8168118831252,6")
fk5;-circle(256.588021754365,-36.7986397439754,6")
fk5;-circle(256.584479216066,-36.8124245815808,6")
fk5;-circle(256.588120440422,-36.8077068926479,6")
fk5;-circle(256.581480413074,-36.8161884973322,6")
fk5;-circle(256.588734963575,-36.8103056674421,6")
fk5;-circle(256.591158400954,-36.8049064174456,6")
fk5;-circle(256.59097779257,-36.8071258237491,6")
Region file: 811235_540997906_180222d18h03m40s887997usUT_xrt.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(256.54179,-36.81206,8")
image paragraph message for exposure 1 of trigger 811235
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
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 GRB180222 (Swift/BAT trigger 811235) at 13:10:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 82 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image 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
sub-image. 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 811235 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180222d18h03m50s322360usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=811235
-expid=540997906 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/811235/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Large extinction of 5.61 found for bat position. Unreliable extinction found
for xrt position. XRT position found for srclist. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 540997906.59404 or about 2018:053:13:11:41 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 87% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 23 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 52 source(s) in Genie image catalog. Found 3 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.19 mag. Found 953 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
89% of the Genie image region.
Genie image analysis:
Found 101529.0 counts in the large background region of 4307.0 pixels or a rate
of 23.573 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 19.63 mag. for a
4-arcsec aperture.
Found 4966.1 counts in the XRT position region of 197.0 pixels or a rate of
25.209 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 2.148 +/- 0.480 (1-sigma) cps or
18.95 mag and a range from 18.73 to 19.22 mag. The 3-sigma UL at the XRT
position is 3.587 cps or 18.39 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.74 mag. The closest
srclist source has ra= 256.5383 dec= -36.8110 mag=16.11 sep=10.73". The closest
Genie source has ra= 256.5378 dec= -36.8108 mag=19.67 sep=12.38".
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?
540997906 81 WHITE srclist found no candidates.
540997906 81 WHITE image found no candidates.
List afterglow candidates for other finding charts.
540998696 871 WHITE srclist found no candidates.
540998696 871 WHITE image found no candidates.
------- Tokens for Quick GCN -------