TDRSS lightcurve for Trigger=1090853
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 25 Dec 21 13:13:07 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1090853, Seg_Num: 0
GRB_RA: 258.568d {+17h 14m 16s} (J2000),
258.813d {+17h 15m 15s} (current),
258.013d {+17h 12m 03s} (1950)
GRB_DEC: +17.262d {+17d 15' 45"} (J2000),
+17.238d {+17d 14' 19"} (current),
+17.319d {+17d 19' 08"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 9849 [cnts] Image_Peak=347 [image_cnts]
TRIGGER_DUR: 4.096 [sec]
TRIGGER_INDEX: 307 E_range: 50-350 keV
BKG_INTEN: 73926 [cnts]
BKG_TIME: 47483.68 SOD {13:11:23.68} UT
BKG_DUR: 40 [sec]
GRB_DATE: 19573 TJD; 359 DOY; 21/12/25
GRB_TIME: 47539.10 SOD {13:12:19.10} UT
GRB_PHI: -113.51 [deg]
GRB_THETA: 4.09 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 13.78 [sigma]
IMAGE_SIGNIF: 9.17 [sigma]
MERIT_PARAMS: +1 +0 +0 +2 +3 +0 -100 +0 -72 +0
SUN_POSTN: 274.32d {+18h 17m 17s} -23.38d {-23d 22' 34"}
SUN_DIST: 43.35 [deg] Sun_angle= 1.0 [hr] (West of Sun)
MOON_POSTN: 168.40d {+11h 13m 35s} +10.49d {+10d 29' 35"}
MOON_DIST: 87.30 [deg]
MOON_ILLUM: 66 [%]
GAL_COORDS: 38.51, 29.01 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 255.67, 40.13 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is a rate trigger.
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 351.01,-5.10 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 25 Dec 21 13:29:09 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1090853, Seg_Num: 0
GRB_RA: 258.568d {+17h 14m 16s} (J2000),
258.813d {+17h 15m 15s} (current),
258.013d {+17h 12m 03s} (1950)
GRB_DEC: +17.262d {+17d 15' 45"} (J2000),
+17.238d {+17d 14' 19"} (current),
+17.319d {+17d 19' 08"} (1950)
GRB_DATE: 19573 TJD; 359 DOY; 21/12/25
GRB_TIME: 47539.10 SOD {13:12:19.10} UT
TRIGGER_INDEX: 307
GRB_PHI: -113.51 [deg]
GRB_THETA: 4.09 [deg]
DELTA_TIME: 58.00 [sec]
TRIGGER_DUR: 4.096 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 13.78 [sigma]
IMAGE_SIGNIF: 9.17 [sigma]
LC_URL: sw01090853000msb.lc
GCN template for BAT paragraph
Click here!
At 13:12:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 211225 ***A*** (trigger=1090853). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 258.568, +17.262 which is
RA(J2000) = 17h 14m 16s
Dec(J2000) = +17d 15' 45"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec. The peak count rate
was ~1445 counts/sec (15-350 keV), at ~3 sec after the trigger.
Test version of draft template
Initial TDRSS lightcurve and spacecraft attitude plot
TDRSS lightcurve from T0-30 to T0+50 (zoom in)
TDRSS light curve from T0-1 to T0+2 (More zoom in)
1.6s binned TDRSS light curve
Tilan's background subtracted TDRSS light curves
Extended TDRSS light curve and spacecraft attitude plot(s)
Extended TDRSS lc No.1
Extended TDRSS lc No.2
Extended TDRSS lc No.3
TDRSS extended lightcurve from T0-1 to T0+2
T50 and T90 calculation
******************************************
battblocks v1.18
------------------------------------------
Input Data: bat_raw_lc.fits
Output GTI: bb.gti
Events to Skip: 128 Changepoint log(prob) Prior: 6.000000
Internal Tick: 1.000000e-04 s
Lookback time: 0 s
Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
Estimated T90 duration: 135.68 s +/- 2.89772 s
Estimated T50 duration: 117.76 s +/- 2.89772 s
Estimated Peak Interval: MET 662130886.33599997 +/- 0.500000 s
Estimated background rate 1: 4667.629 near MET 662130755.776000 s
Estimated background rate 2: 4586.581 near MET 662130931.392000 s
Estimated total duration: 141.312 s (for data selection)
(from MET 662130767.552000 to MET 662130908.864000)
Estimated total fluence: 19297.321064 count
Created GTI with 6 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 258.568 17.262 0.083
No match
Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)
python compare_catalog.py 258.568 17.262
No match
Link to SIMBAD
Click here for the SIMBAD search!
Frank's UVOT result
Click here!
Frank's UVOT Blinking images
Click here!
Elevation angle of GRB/Sun at the ground telescope locations
GSFC, Greenbelt, Maryland
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 305.288165 4.570527
Obj: 2021 12 25 13 284.485479 43.873786
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 287.282409 -17.249508
Obj: 2021 12 25 13 259.603513 16.455245
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 283.974998 -22.555164
Obj: 2021 12 25 13 257.055197 11.849976
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 282.809439 -53.708267
Obj: 2021 12 25 13 239.008737 -24.947339
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 18.106624 -33.125531
Obj: 2021 12 25 13 3.829704 -75.932746
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 102.046906 -59.190002
Obj: 2021 12 25 13 159.175700 -35.743273
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 356.017946 37.727546
Obj: 2021 12 25 13 46.522605 74.007384
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2021 12 25 13 276.476012 39.567769
Obj: 2021 12 25 13 225.331293 28.145480
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1090853/tdrss_ql/
bat_raw_lc.fits : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif : GIF TDRSS light curve
sc_att.qdp : QDP file of the spacecraft attitude
sc_att.gif : GIF spacecraft attitude
bb.gti : Bayesian block GTI file (battblocks)
dur.gti : Duration GTI file (battblocks)
battblocks.log : Output log of battblocks
Plot creation:
Sat Dec 25 08:29:23 EST 2021