image overlap message for exposure 1 of trigger 1245074
uvot_overlap.pl vrs. 2010-12-20b fem started at 240727d19h12m19s721019usUT
The observation of trigger 1245074 started 2024-07-27T03:48:54.2
Examining file ./1245074_g743744934_uvot_sky_image.fits
The exposure ID is 743744934
The exposure time is 149.868 (seconds)
The filter is WHITE.
*** Warning -- found 19472 null pixels in the image.
The uvot region is centered at (236.4352,8.6200) with a roll angle of 292.6
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 (236.4400,8.6180) with a radius of 3.000 arc min
This is 0.311 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 (236.4373,8.6200) with a radius of 0.047 arc min
This is 0.129 arc min from the center of the uvot region
The area of the XRT error circle is 0.007 sq. arc min
The UVOT/XRT overlap is 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1245074
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240727d19h12m24s006676usUT
Observation start time is 2024-07-27T03:48:54.2
Examining file ./1245074_g743744934_uvot_catalog_image.fits
The exposure ID is 743744934
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 1245074_g743744934
Aspect correction adds -0.00172 degrees (-0.414 sec of time = -6.14 arc sec) to RA
Aspect correction adds 0.00153 degrees ( 5.52 arcsec) to Dec
Total aspect correction is 8.25 arcsec
Star catalogs centered at 236.4377 , 8.6112 with radius 2.00 arc min.
n_usno: 52 n_gsc: 33
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.46494
RA DEC Mag Color
bright star 0: 236.43259 (15:45:43.82) 8.60936 (+08:36:33.7) 11.46 USNO-V
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.553" for 1245074_g743744934
Mean and std. dev of mag. difference (MAG_DELTA) are 2.031 and 0.009 for 1245074_g743744934
Found 1 entries without IDs and 0 entries that are acceptable afterglow candidates for 1245074_g743744934.
Acceptable entries have no ID, XRT distances < 7", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=236.4400 (15:45:45.60) DEC= 8.6180 (+08:37:04.8)
XRT distances are from RA=236.4373 (15:45:44.96) DEC= 8.6200 (+08:37:11.9)
*** WARNING 33 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 0:
ra=236.42830 dec= 8.60781 +/- 0.8" mag=18.59+/-0.15 dist=54.3 REFID=2 flag=2
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 351.75888 counts in the bkg source region of 44.000000 pixels.
Rate in bkg region from 0 to 45 arcsec is 7.995 counts/pixel (5-sig UL in 4" is 20.22 mag) for 1245074_g743744934
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
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 20.78, XRT distances < 7",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1245074_743744934_240727d19h12m24s006676usUT_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(236.4352,8.6200,45")
fk5;-circle(236.428304233657,8.60781202274558,6")
Region file: 1245074_743744934_240727d19h12m24s006676usUT_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(236.43733,8.61997,8")
Region file: 1245074_743744934_240727d19h12m24s006676usUT_xrt_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(236.43733,8.61997,25")
fk5;-circle(236.43733,8.61997,15")
image paragraph message for exposure 1 of trigger 1245074
------ Start for Possible Stand-alone Circular ----
In response to GRB240727 (Swift/BAT trigger 1245074) at 03:46:14 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 126 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 15:45:45.02 = 236.43758
DEC(J2000) = +08:37:12.9 = 8.62026
with a 90%-confidence error radius of about 1.10 arc sec. This position is 1.4
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.46. No correction has been made for the expected extinction corresponding to
E(B-V) of 0.037.
------- notes for trigger 1245074 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240727d19h12m27s433749usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1245074
-expid=743744934 -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/1245074/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 743744934.20904 or about 2024:209:03:48:49 UT
Found 484 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 7% of the srclist region. Found 50 sources in
srclist catalog. Found 7 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 3 source(s) in Genie image catalog. Found 1 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.78 mag. Found 48 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 8% of the
Genie image region. The Genie image is INCOMPLETE with 19472 null pixels.
The closest Genie source has ra= 236.4283 dec= 8.6078 mag=18.59 sep=54.29".
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?
743744934 126 WHITE 236.43758 8.62026 18.46/19.2 1.4 srclist Yes
743744934 126 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 8.62026
GRB_ERROR: 1.10
GRB_RA: 236.43758
IMAGE_START_TIME: 03:48:49
MAGNITUDE: 18.46
MAG_ERROR: 0.4
MESSAGE_TYPE: ACK
SOURCE: XRT