image overlap message for exposure 1 of trigger 1223072
uvot_overlap.pl vrs. 2010-12-20b fem started at 240419d17h45m17s406855usUT
The observation of trigger 1223072 started 2024-04-19T12:26:04.2
Examining file ./1223072_g191_uvot_sky_image.fits
The exposure ID is 735222364
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (325.9010,4.2368) with a roll angle of 79.3
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 (325.8770,4.2340) with a radius of 3.000 arc min
This is 1.445 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 7.08 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (325.8968,4.2348) with a radius of 0.042 arc min
This is 0.280 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
image afterglow message for exposure 1 of trigger 1223072
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240419d17h45m20s139162usUT
Observation start time is 2024-04-19T12:26:04.2
Examining file ./1223072_g191_uvot_catalog_image.fits
The exposure ID is 735222364
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 5 detected source(s) for 1223072_g191
Aspect correction adds 0.00217 degrees (0.521 sec of time = 7.80 arc sec) to RA
Aspect correction adds 0.00026 degrees ( 0.92 arcsec) to Dec
Total aspect correction is 7.85 arcsec
Star catalogs centered at 325.8968 , 4.2347 with radius 2.41 arc min.
n_usno: 40 n_gsc: 47
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.5047
RA DEC Mag Color
bright star 0: 325.92068 (21:43:40.96) 4.22406 (+04:13:26.6) 10.50 USNO-V
Mean distance difference (CAT_DELTA) for 3 matched entries is 0.275" for 1223072_g191
Mean and std. dev of mag. difference (MAG_DELTA) are 1.492 and 0.204 for 1223072_g191
Found 2 entries without IDs and 0 entries that are acceptable afterglow candidates for 1223072_g191.
Acceptable entries have no ID, XRT distances < 6.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
2 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=325.8770 (21:43:30.48) DEC= 4.2340 (+04:14:02.4)
XRT distances are from RA=325.8968 (21:43:35.23) DEC= 4.2348 (+04:14:05.2)
*** WARNING 40 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 2:
ra=325.91704 dec= 4.22665 +/- 0.6" mag=16.44+/-0.14 dist=78.4 REFID=4 flag=19
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 1.0815265E+05 counts in the bkg source region of 6203.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 17.436 counts/pixel (5-sig UL in 4" is 19.80 mag) for 1223072_g191
There are 3429.6458 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 17.321 counts/pixel for 1223072_g191
There are 21606.869 counts in the xrt_bkg source region of 1246.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 17.341 counts/pixel (5-sig UL in 4" is 19.80 mag) for 1223072_g191
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 20.35, XRT distances < 6.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1223072_735222364_240419d17h45m20s139162usUT_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(325.9010,4.2368,45")
fk5;-circle(325.906841617282,4.24624976724698,6")
Region file: 1223072_735222364_240419d17h45m20s139162usUT_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(325.89679,4.23478,8")
Region file: 1223072_735222364_240419d17h45m20s139162usUT_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(325.89679,4.23478,25")
fk5;-circle(325.89679,4.23478,15")
image paragraph message for exposure 1 of trigger 1223072
------ Start for Possible Stand-alone Circular ----
In response to GRB240419 (Swift/BAT trigger 1223072) at 12:22:52 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 158 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. 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
XRT 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
0.077.
------- notes for trigger 1223072 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240419d17h45m23s231074usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1223072
-expid=735222364 -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/1223072/
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 735222364.23046 or about 2024:110:12:25:59 UT
Found 321 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 48 sources in
srclist catalog. Found 13 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 5 source(s) in Genie image catalog. Found 2 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.35 mag. Found 47 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 5% of the
Genie image region.
Genie image analysis:
Found 108152.6 counts in the large background region of 6203.0 pixels or a rate
of 17.436 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 19.62 mag. for a
4-arcsec aperture.
Found 3429.6 counts in the XRT position region of 198.0 pixels or a rate of
17.321 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.026 +/- 0.420 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.261 cps or 19.35 mag. The closest srclist
source has ra= 325.8817 dec= 4.2336 mag=19.84 sep=54.34". The closest Genie
source has ra= 325.9068 dec= 4.2462 mag=17.96 sep=54.84".
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?
735222364 158 WHITE srclist found no candidates.
735222364 158 WHITE image found no candidates.
List afterglow candidates for other finding charts.
735222522 316 U srclist found no candidates.
735222522 316 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 4.23478
GRB_ERROR: 6.25
GRB_RA: 325.89679
IMAGE_START_TIME: 12:25:59
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT