image overlap message for exposure 1 of trigger 848048
uvot_overlap.pl vrs. 2010-12-20b fem started at 180715d19h37m50s674885usUT
The observation of trigger 848048 started 2018-07-15T19:19:18.6
Examining file 848048_g4332_uvot_sky_image.fits
The exposure ID is 553375158
The exposure time is 149.879 (seconds)
The filter is WHITE.
The uvot region is centered at (235.0653,-0.9237) with a roll angle of 294.0
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 (235.0690,-0.9250) with a radius of 3.000 arc min
This is 0.236 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
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 848048
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180715d19h37m51s677416usUT
Observation start time is 2018-07-15T19:19:18.6
Examining file 848048_g4332_uvot_catalog_image.fits
The exposure ID is 553375158
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 14 detected source(s) for 848048_g4332
Aspect correction adds 0.00059 degrees (0.141 sec of time = 2.11 arc sec) to RA
Aspect correction adds -0.00041 degrees (-1.48 arcsec) to Dec
Total aspect correction is 2.58 arcsec
Star catalogs centered at 235.0651 , -0.9241 with radius 2.76 arc min.
n_usno: 58 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 8.15488
RA DEC Mag Color
bright star 0: 235.10659 (15:40:25.58) -0.91244 (-00:54:44.8) 8.15 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 7 matched entries is 0.401" for 848048_g4332
Mean and std. dev of mag. difference (MAG_DELTA) are 1.386 and 0.569 for 848048_g4332
Found 7 entries without IDs and 7 entries that are acceptable afterglow candidates for 848048_g4332.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=235.0690 (15:40:16.56) DEC=-0.9250 (-00:55:30.0)
XRT distances are as reported in catalog file.
*** WARNING 50 per cent of entries have no IDs.
-----------------
Entry 3 in the list of sources is a candidate afterglow for 848048_g4332 with genie
ra=235.08311 (15:40:19.95) dec=-0.93070 (-00:55:50.5) +/- 1.1" mag=21.14+/-0.32
dist=54.8 REFID=12 major=2.5 minor=2.0 flag=0
Found 1 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
235.0886 -0.9316 19.9 -1 USNO-B1 20.34 18.68 19.42
*** unacceptable major profile of 2.5
-----------------
Entry 4 in the list of sources is a candidate afterglow for 848048_g4332 with genie
ra=235.08932 (15:40:21.44) dec=-0.92560 (-00:55:32.2) +/- 0.8" mag=20.49+/-0.22
dist=73.2 REFID=7 major=3.2 minor=2.9 flag=0
Found 1 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
235.0942 -0.9275 19.0 -1 USNO-B1 17.71 16.27 16.91
*** unacceptable major profile of 3.2
-----------------
Entry 6 in the list of sources is a candidate afterglow for 848048_g4332 with genie
ra=235.09210 (15:40:22.10) dec=-0.92452 (-00:55:28.3) +/- 0.8" mag=20.25+/-0.20
dist=83.2 REFID=5 major=2.5 minor=2.1 flag=0
This source is near the edge of image (0.891)
Found 1 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
235.0942 -0.9275 13.3 -1 USNO-B1 17.71 16.27 16.91
*** unacceptable major profile of 2.5
-----------------
Entry 7 in the list of sources is a candidate afterglow for 848048_g4332 with genie
ra=235.04765 (15:40:11.44) dec=-0.93399 (-00:56:02.4) +/- 0.7" mag=19.76+/-0.17
dist=83.4 REFID=11 major=2.1 minor=1.7 flag=2 (blended)
This source is near the edge of image (0.945)
Found 2 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
235.0437 -0.9323 15.4 -1 USNO-B1 13.98 12.45 13.13
235.0435 -0.9341 15.0 -1 USNO-B1 20.77 99.99 99.99
*** unacceptable major profile of 2.1
-----------------
Entry 10 in the list of sources is a candidate afterglow for 848048_g4332 with genie
ra=235.04281 (15:40:10.27) dec=-0.92905 (-00:55:44.6) +/- 0.8" mag=20.49+/-0.22
dist=95.4 REFID=9 major=1.2 minor=1.1 flag=2 (blended)
This source is near the edge of image (0.981)
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
235.0437 -0.9323 12.1 -1 USNO-B1 13.98 12.45 13.13
235.0425 -0.9314 8.6 -1 USNO-B1 20.30 17.76 18.89
235.0435 -0.9341 18.2 -1 USNO-B1 20.77 99.99 99.99
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries within 5.25" or brighter than 12 mag
-----------------
Entry 11 in the list of sources is a candidate afterglow for 848048_g4332 with genie
ra=235.04204 (15:40:10.09) dec=-0.91606 (-00:54:57.8) +/- 0.6" mag=18.18+/-0.15
dist=102.2 REFID=3 major=2.6 minor=2.1 flag=0
This source is near the edge of image (0.902)
Found 1 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
235.0403 -0.9113 18.2 -1 USNO-B1 13.67 12.12 12.81
*** unacceptable major profile of 2.6
-----------------
Entry 12 in the list of sources is a candidate afterglow for 848048_g4332 with genie
ra=235.03948 (15:40:09.48) dec=-0.93566 (-00:56:08.4) +/- 0.6" mag=18.49+/-0.15
dist=113.0 REFID=10 major=2.8 minor=1.3 flag=18 (blended+aperture_incomplete)
This source is near the edge of image (1.280)
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
235.0437 -0.9323 19.4 -1 USNO-B1 13.98 12.45 13.13
235.0425 -0.9314 18.7 -1 USNO-B1 20.30 17.76 18.89
235.0435 -0.9341 15.5 -1 USNO-B1 20.77 99.99 99.99
*** unacceptable major profile of 2.8
There are 57318.621 counts in the bkg source region of 6086.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 9.418 counts/pixel (5-sig UL in 4" is 20.13 mag) for 848048_g4332
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.13, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 848048_553375158_180715d19h37m51s677416usUT_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(235.0653,-0.9237,45")
fk5;-circle(235.074888926869,-0.925141833465537,6")
fk5;-circle(235.068086191749,-0.931617553934192,6")
image paragraph message for exposure 1 of trigger 848048
IMAGE PROBLEM: partial overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB180715 (Swift/BAT trigger 848048) at 18:07:05 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 4312 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 25%
of the BAT error circle. The typical 3-sigma upper limit has been about 19.6
mag. 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 0.13.
------- notes for trigger 848048 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180715d19h38m13s387332usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=848048
-expid=553375158 -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/848048/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for srclist. No XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 553375158.59624 or about 2018:196:19:19:13 UT
Found 307 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 175 sources in
srclist catalog. Found 135 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.66 mag.
Found 14 source(s) in Genie image catalog. Found 7 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.13 mag. Found 54 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
4% of the Genie image region.
Genie image analysis:
Found 57318.6 counts in the large background region of 6086.0 pixels or a rate
of 9.418 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 20.13 mag. for a
4-arcsec aperture.
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?
553375158 4311 WHITE srclist found no candidates.
553375158 4311 WHITE 235.04281 -0.92905 20.49/20.1 95.4 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -0.92500
GRB_ERROR: 200
GRB_RA: 235.06900
IMAGE_START_TIME: 19:19:13
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT