srclist overlap message for exposure 1 of trigger 1205708
uvot_overlap.pl vrs. 2010-12-20b fem started at 240102d04h26m12s677299usUT
The observation of trigger 1205708 started 2024-01-01T14:23:04.3
Examining file ./1205708_g725811784_uvot_sky_srclist.fits
The exposure ID is 725811784
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (10.3439,8.5190) with a roll angle of 247.1
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 (10.3480,8.5170) with a radius of 3.000 arc min
This is 0.270 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 (10.3484,8.5158) with a radius of 0.037 arc min
This is 0.328 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1205708
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240102d04h26m19s591613usUT
Observation start time is 2024-01-01T14:23:04.3
Examining file ./1205708_g725811784_uvot_catalog_srclist.fits
The exposure ID is 725811784
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 34 detected source(s) for 1205708_g725811784
Aspect correction adds -0.00116 degrees (-0.278 sec of time = -4.13 arc sec) to RA
Aspect correction adds -0.00189 degrees (-6.80 arcsec) to Dec
Total aspect correction is 7.96 arcsec
Star catalogs centered at 10.3450 , 8.5155 with radius 5.58 arc min.
n_usno: 209 n_gsc: 167
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.67494
RA DEC Mag Color
bright star 0: 10.39034 (00:41:33.68) 8.52967 (+08:31:46.8) 11.88 USNO-V
bright star 1: 10.27861 (00:41:06.87) 8.52159 (+08:31:17.7) 11.67 USNO-V
Mean distance difference (CAT_DELTA) for 15 matched entries is 0.801" for 1205708_g725811784
Mean and std. dev of mag. difference (MAG_DELTA) are 2.869 and 0.964 for 1205708_g725811784
Found 19 entries without IDs and 5 entries that are acceptable afterglow candidates for 1205708_g725811784.
Acceptable entries have no ID, XRT distances < 5.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
5 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=10.3480 (00:41:23.52) DEC= 8.5170 (+08:31:01.2)
XRT distances are from RA=10.3484 (00:41:23.62) DEC= 8.5158 (+08:30:57.0)
*** WARNING 55 per cent of entries have no IDs.
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1205708_g725811784 with 5x5 stamp
ra=10.35032 (00:41:24.08) dec=8.50185 (+08:30:06.7) +/- 1.1" mag=17.64+/-0.35
dist=50.8 REFID=15
*** The position of this source is inconsistent with the XRT position.
The position is 55.2 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 0 1 0 0 0
Found 2 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
10.3499 8.5024 2.5 -1 USNO-B1 15.43 14.04 14.66 *
10.3499 8.5024 2.3 -1 GSC2.3 13.85 15.18 14.51 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1205708_g725811784 with 5x5 stamp
ra=10.35096 (00:41:24.23) dec=8.50005 (+08:30:00.2) +/- 1.1" mag=17.96+/-0.35
dist=57.5 REFID=22
*** The position of this source is inconsistent with the XRT position.
The position is 61.9 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 0 1 0 0 0
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
10.3499 8.5024 9.3 -1 USNO-B1 15.43 14.04 14.66
10.3499 8.5024 9.1 -1 GSC2.3 13.85 15.18 14.51
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1205708_g725811784 with 5x5 stamp
ra=10.38009 (00:41:31.22) dec=8.56041 (+08:33:37.5) +/- 1.1" mag=18.80+/-0.35
dist=196.1 REFID=26
*** The position of this source is inconsistent with the XRT position.
The position is 193.6 arc sec from the BAT position.
src: 6 distr. of nearby unmatched sources: 0 1 0 0 0
Found 4 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
10.3787 8.5584 9.0 -1 USNO-B1 19.55 18.58 19.01
10.3791 8.5626 8.7 -1 USNO-B1 17.02 15.38 16.11
10.3788 8.5583 8.8 -1 GSC2.3 17.91 19.11 18.36
10.3792 8.5625 8.2 -1 GSC2.3 15.09 16.58 15.75
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1205708_g725811784 with 5x5 stamp
ra=10.37973 (00:41:31.14) dec=8.56227 (+08:33:44.2) +/- 1.1" mag=18.73+/-0.35
dist=200.9 REFID=23
*** The position of this source is inconsistent with the XRT position.
The position is 198.3 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 0 1 0 0 0
Found 4 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
10.3787 8.5584 14.6 -1 USNO-B1 19.55 18.58 19.01
10.3791 8.5626 2.6 -1 USNO-B1 17.02 15.38 16.11 *
10.3788 8.5583 14.6 -1 GSC2.3 17.91 19.11 18.36
10.3792 8.5625 2.0 -1 GSC2.3 15.09 16.58 15.75 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 10 in the list of sources is a candidate afterglow for 1205708_g725811784 with 5x5 stamp
ra=10.33963 (00:41:21.51) dec=8.49481 (+08:29:41.3) +/- 1.1" mag=18.25+/-0.35
dist=81.9 REFID=16
*** The position of this source is inconsistent with the XRT position.
The position is 85.3 arc sec from the BAT position.
src: 10 distr. of nearby unmatched sources: 0 0 0 0 0
Found 4 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
10.3395 8.4979 11.0 -1 USNO-B1 99.99 19.24 99.99
10.3386 8.4968 8.2 -1 USNO-B1 16.04 14.73 15.31
10.3398 8.4982 12.3 -1 GSC2.3 20.23 99.99 99.99
10.3387 8.4967 7.5 -1 GSC2.3 14.52 15.78 15.09
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 2 candidate(s) outside XRT error circle with mag < 18.66
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5.5",
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 1205708
------ Start for Possible Stand-alone Circular ----
In response to GRB240101 (Swift/BAT trigger 1205708) at 14:19:43 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 168 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
0.059.
------- notes for trigger 1205708 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240102d04h26m28s286999usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1205708
-expid=725811784 -meonly -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/1205708/
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 725811784.25076 or about 2024:001:14:22:59 UT
Found 205 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 34 sources in
srclist catalog. Found 19 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 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.49 mag. Found 45 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 84621.2 counts in the large background region of 6276.0 pixels or a rate
of 13.483 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 19.76 mag. for a
4-arcsec aperture.
Found 2797.7 counts in the XRT position region of 208.0 pixels or a rate of
13.450 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.043 +/- 0.381 (1-sigma) cps or
23.03 mag and a range from 20.54 to 99.99 mag. The 3-sigma UL at the XRT
position is 1.185 cps or 19.42 mag. The closest srclist source has ra= 10.3498
dec= 8.5023 mag=17.30 sep=48.90". The closest Genie source has ra= 10.3501
dec= 8.5023 mag=15.47 sep=48.91".
This paragraph is only useful if the XRT position is grossly wrong. There are 2
candidate(s) in the srclist data with mag < 18.66 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=10.35096
(00:41:24.23), DEC=8.50005 (+08:30:00.2) (J2000). It has a mag of 17.96. It is
61.9" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 168 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 00:41:24.23 = 10.35096
DEC(J2000) = +08:30:00.2 = 8.50005
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 17.96 with a 1-sigma error of about 0.35. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.059.
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?
725811784 168 WHITE srclist found no candidates.
725811784 168 WHITE image found no candidates.
List afterglow candidates for other finding charts.
725811942 326 ? srclist data are not available.
725811942 326 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 8.51583
GRB_ERROR: 5.5
GRB_RA: 10.34842
IMAGE_START_TIME: 14:22:59
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT