image overlap message for exposure 1 of trigger 1034325
uvot_overlap.pl vrs. 2010-12-20b fem started at 210223d19h23m51s330599usUT
The observation of trigger 1034325 started 2021-02-22T22:39:33.5
Examining file ./1034325_g126_uvot_sky_image.fits
The exposure ID is 635726373
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (154.6197,-14.9009) with a roll angle of 184.2
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 (154.6210,-14.8980) with a radius of 3.000 arc min
This is 0.190 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 (154.6058,-14.9317) with a radius of 0.023 arc min
This is 2.016 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1034325
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210223d19h23m56s221571usUT
Observation start time is 2021-02-22T22:39:33.5
Examining file ./1034325_g126_uvot_catalog_image.fits
The exposure ID is 635726373
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 11 detected source(s) for 1034325_g126
Aspect correction adds -0.00095 degrees (-0.228 sec of time = -3.31 arc sec) to RA
Aspect correction adds -0.00104 degrees (-3.75 arcsec) to Dec
Total aspect correction is 5.00 arcsec
Star catalogs centered at 154.6244 , -14.9007 with radius 2.46 arc min.
n_usno: 67 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.94266
RA DEC Mag Color
bright star 0: 154.63921 (10:18:33.41) -14.92453 (-14:55:28.3) 10.94 USNO-V
Mean distance difference (CAT_DELTA) for 7 matched entries is 0.531" for 1034325_g126
Mean and std. dev of mag. difference (MAG_DELTA) are 0.900 and 0.952 for 1034325_g126
Found 4 entries without IDs and 3 entries that are acceptable afterglow candidates for 1034325_g126.
Acceptable entries have no ID, XRT distances < 5", 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=154.6210 (10:18:29.04) DEC=-14.8980 (-14:53:52.8)
XRT distances are from RA=154.6058 (10:18:25.38) DEC=-14.9317 (-14:55:54.1)
*** WARNING 36 per cent of entries have no IDs.
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1034325_g126 with genie
ra=154.62748 (10:18:30.59) dec=-14.91205 (-14:54:43.4) +/- 0.7" mag=17.19+/-0.14
dist=103.5 REFID=6 major=6.3 minor=2.1 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 55.4 arc sec from the BAT position.
Found 3 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
154.6262 -14.9102 7.9 -1 USNO-B1 21.68 19.91 20.69
154.6281 -14.9150 10.9 -1 USNO-B1 99.99 18.46 99.99
154.6275 -14.9164 15.8 -1 USNO-B1 13.02 12.26 12.60
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 6.3
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1034325_g126 with genie
ra=154.62329 (10:18:29.59) dec=-14.91384 (-14:54:49.8) +/- 0.7" mag=17.44+/-0.14
dist=88.6 REFID=8 major=4.8 minor=3.0 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 57.6 arc sec from the BAT position.
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
154.6262 -14.9102 16.4 -1 USNO-B1 21.68 19.91 20.69
154.6281 -14.9150 17.2 -1 USNO-B1 99.99 18.46 99.99
154.6275 -14.9164 17.3 -1 USNO-B1 13.02 12.26 12.60
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 4.8
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1034325_g126 with genie
ra=154.62295 (10:18:29.51) dec=-14.91809 (-14:55:05.1) +/- 0.8" mag=18.11+/-0.14
dist=77.3 REFID=1 major=6.1 minor=2.8 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 72.7 arc sec from the BAT position.
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
154.6275 -14.9164 16.8 -1 USNO-B1 13.02 12.26 12.60
154.6248 -14.9197 8.6 -1 USNO-B1 20.84 19.42 20.05
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 6.1
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 50354.305 counts in the bkg source region of 6037.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.341 counts/pixel (5-sig UL in 4" is 20.20 mag) for 1034325_g126
Do not compute counts in XRT region because position is too far from center.
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 20.75, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1034325_635726373_210223d19h23m56s221571usUT_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(154.6197,-14.9009,45")
fk5;-circle(154.625057972823,-14.8896967244687,6")
fk5;-circle(154.630953548864,-14.9004468278962,6")
fk5;-circle(154.613200884966,-14.8902586538696,6")
fk5;-circle(154.627478275445,-14.9120459160366,6")
fk5;-circle(154.623293062767,-14.9138389878297,6")
image paragraph message for exposure 1 of trigger 1034325
------ Start for Possible Stand-alone Circular ----
In response to GRB210222 (Swift/BAT trigger 1034325) at 22:37:26 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 100 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 10:18:25.45 = 154.60606
DEC(J2000) = -14:55:55.7 = -14.93215
with a 90%-confidence error radius of about 1.10 arc sec. This position is 2.0
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.65. No correction has been made for the expected extinction corresponding to
E(B-V) of 0.102.
------- notes for trigger 1034325 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210223d19h23m58s738050usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1034325
-expid=635726373 -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/1034325/
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 635726373.4654 or about 2021:053:22:39:28 UT
Found 313 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 142 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 11 source(s) in Genie image catalog. Found 4 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.75 mag. Found 63 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
7% of the Genie image region. The closest Genie source has ra= 154.6078 dec=
-14.9189 mag=19.15 sep=46.48".
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?
635726373 100 WHITE 154.60606 -14.93215 17.65/19.2 2.0 srclist Yes
635726373 100 WHITE image found no candidates.
List afterglow candidates for other finding charts.
635726531 258 U 154.60617 -14.93171 17.64/18.1 0.5 srclist Yes
635726531 258 U image found no candidates.
635727134 861 WHITE 154.60590 -14.93200 18.40/19.2 2.1 srclist Yes
635727134 861 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -14.93215
GRB_ERROR: 1.10
GRB_RA: 154.60606
IMAGE_START_TIME: 22:39:28
MAGNITUDE: 17.65
MAG_ERROR: 0.4
MESSAGE_TYPE: ACK
SOURCE: XRT