srclist overlap message for exposure 2 of trigger 1093592
uvot_overlap.pl vrs. 2010-12-20b fem started at 220117d23h37m38s473049usUT
The observation of trigger 1093592 started 2022-01-17T16:24:40.5
Examining file ./1093592_g348_uvot_sky_srclist.fits
The exposure ID is 664129480
The exposure time is undefined.
The filter is U.
The uvot region is centered at (91.5696,-28.4398) with a roll angle of 212.0
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 (91.5780,-28.4100) with a radius of 3.000 arc min
This is 1.844 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 27.31 sq. arc min or 0.97 of the BAT error circle
The XRT error circle is centered at (91.5722,-28.4376) with a radius of 0.038 arc min
This is 0.188 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
srclist afterglow message for exposure 2 of trigger 1093592
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220117d23h37m59s520155usUT
Observation start time is 2022-01-17T16:24:40.5
Examining file ./1093592_g348_uvot_catalog_srclist.fits
The exposure ID is 664129480
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1093592_g348
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 0.836
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1093592_g348 has mag 18.83
Aspect correction adds -0.00107 degrees (-0.257 sec of time = -3.39 arc sec) to RA
Aspect correction adds -0.00032 degrees (-1.16 arcsec) to Dec
Total aspect correction is 3.58 arcsec
Star catalogs centered at 91.5695 , -28.4359 with radius 5.64 arc min.
n_usno: 440 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 8.16328
RA DEC Mag Color
bright star 0: 91.51358 (06:06:03.26) -28.46600 (-28:27:57.6) 11.13 USNO-V
bright star 1: 91.63366 (06:06:32.08) -28.45769 (-28:27:27.7) 8.16 USNO-V
bright star 2: 91.51795 (06:06:04.31) -28.49411 (-28:29:38.8) 11.51 USNO-V
bright star 3: 91.66909 (06:06:40.58) -28.42703 (-28:25:37.3) 10.92 USNO-V
bright star 4: 91.47240 (06:05:53.38) -28.46399 (-28:27:50.4) 11.73 USNO-V
bright star 5: 91.63503 (06:06:32.41) -28.36311 (-28:21:47.2) 11.77 USNO-V
Mean distance difference (CAT_DELTA) for 49 matched entries is 0.920" for 1093592_g348
Mean and std. dev of mag. difference (MAG_DELTA) are 1.395 and 1.007 for 1093592_g348
Found 142 entries without IDs and 2 entries that are acceptable afterglow candidates for 1093592_g348.
Acceptable entries have no ID, XRT distances < 5.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
136 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=91.5780 (06:06:18.72) DEC=-28.4100 (-28:24:36.0)
XRT distances are from RA=91.5722 (06:06:17.32) DEC=-28.4376 (-28:26:15.5)
*** WARNING 74 per cent of entries have no IDs.
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1093592_g348 with 1x1 stamp
ra=91.60500 (06:06:25.20) dec=-28.41260 (-28:24:45.4) +/- 1.1" mag=18.52+/-0.35
dist=137.6 REFID=146
*** The position of this source is inconsistent with the XRT position.
The position is 86.0 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 0 0 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
91.6020 -28.4131 9.7 -1 USNO-B1 15.56 14.70 15.08
91.6041 -28.4131 3.3 -1 USNO-B1 18.10 16.86 17.41 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 63 in the list of sources is a candidate afterglow for 1093592_g348 with 1x1 stamp
ra=91.59001 (06:06:21.60) dec=-28.37965 (-28:22:46.7) +/- 1.1" mag=18.65+/-0.35
dist=216.3 REFID=151
*** The position of this source is inconsistent with the XRT position.
The position is 115.7 arc sec from the BAT position.
src: 63 distr. of nearby unmatched sources: 0 0 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
91.5908 -28.3805 4.0 -1 USNO-B1 14.87 14.25 14.52
91.5902 -28.3785 4.1 -1 USNO-B1 19.58 19.07 19.30
*** 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:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.12, XRT distances < 5.75",
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 2 of trigger 1093592
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB220117 (Swift/BAT trigger 1093592) at 16:18:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
320 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 19.2 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.028.
------- notes for trigger 1093592 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220117d23h38m03s060414usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1093592
-expid=664129480 -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/1093592/
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 664129480.50222 or about 2022:017:16:24:35 UT
Found 436 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 142 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Found 2 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 20.77 mag. Found 72 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region.
Genie image analysis:
Found 9918.3 counts in the large background region of 6308.0 pixels or a rate
of 1.572 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 20.06 mag. for a
4-arcsec aperture.
Found 333.6 counts in the XRT position region of 199.0 pixels or a rate of
1.676 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.097 +/- 0.078 (1-sigma) cps or
20.71 mag and a range from 20.07 to 22.50 mag. The 3-sigma UL at the XRT
position is 0.332 cps or 19.38 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.83 mag. The closest
srclist source has ra= 91.5523 dec= -28.4241 mag=18.21 sep=79.50". The closest
Genie source has ra= 91.5525 dec= -28.4240 mag=17.38 sep=79.22".
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?
664129480 320 U srclist found no candidates.
664129480 320 U image found no candidates.
List afterglow candidates for other finding charts.
664129321 161 WHITE srclist found no candidates.
664129321 161 WHITE image found no candidates.
664130036 876 WHITE srclist found no candidates.
664130036 876 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -28.43764
GRB_ERROR: 5.75
GRB_RA: 91.57217
IMAGE_START_TIME: 16:24:35
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT