TDRSS lightcurve for Trigger=1013852
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 21 Dec 20 07:09:54 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1013852, Seg_Num: 0
GRB_RA: 214.477d {+14h 17m 55s} (J2000),
214.814d {+14h 19m 15s} (current),
213.679d {+14h 14m 43s} (1950)
GRB_DEC: -45.411d {-45d 24' 38"} (J2000),
-45.507d {-45d 30' 24"} (current),
-45.180d {-45d 10' 48"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 20531 [cnts] Image_Peak=390 [image_cnts]
TRIGGER_DUR: 8.192 [sec]
TRIGGER_INDEX: 336 E_range: 25-100 keV
BKG_INTEN: 147714 [cnts]
BKG_TIME: 25653.80 SOD {07:07:33.80} UT
BKG_DUR: 64 [sec]
GRB_DATE: 19204 TJD; 356 DOY; 20/12/21
GRB_TIME: 25741.42 SOD {07:09:01.42} UT
GRB_PHI: -33.92 [deg]
GRB_THETA: 40.36 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 8.60 [sigma]
IMAGE_SIGNIF: 7.86 [sigma]
MERIT_PARAMS: +1 +0 +0 +3 +2 -2 +0 +0 -64 +0
SUN_POSTN: 269.87d {+17h 59m 29s} -23.44d {-23d 26' 08"}
SUN_DIST: 49.31 [deg] Sun_angle= 3.7 [hr] (West of Sun)
MOON_POSTN: 355.03d {+23h 40m 08s} -7.92d {-07d 55' 24"}
MOON_DIST: 115.79 [deg]
MOON_ILLUM: 43 [%]
GAL_COORDS: 318.45, 14.84 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 228.23,-29.69 [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 = 17.91,17.91 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Mon 21 Dec 20 07:45:36 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1013852, Seg_Num: 0
GRB_RA: 214.477d {+14h 17m 55s} (J2000),
214.814d {+14h 19m 15s} (current),
213.679d {+14h 14m 43s} (1950)
GRB_DEC: -45.411d {-45d 24' 38"} (J2000),
-45.507d {-45d 30' 24"} (current),
-45.180d {-45d 10' 48"} (1950)
GRB_DATE: 19204 TJD; 356 DOY; 20/12/21
GRB_TIME: 25741.42 SOD {07:09:01.42} UT
TRIGGER_INDEX: 336
GRB_PHI: -33.92 [deg]
GRB_THETA: 40.36 [deg]
DELTA_TIME: 39.00 [sec]
TRIGGER_DUR: 8.192 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 8.60 [sigma]
IMAGE_SIGNIF: 7.86 [sigma]
LC_URL: sw01013852000msb.lc
GCN template for BAT paragraph
Click here!
At 07:09:01 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 201221 ***A*** (trigger=1013852). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 214.477, -45.411 which is
RA(J2000) = 14h 17m 55s
Dec(J2000) = -45d 24' 38"
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 ~1164 counts/sec (15-350 keV), at ~10 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
Extended TDRSS lc No.4
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: 19.392 s +/- 1.14576 s
Estimated T50 duration: 10.624 s +/- 0.512 s
Estimated Peak Interval: MET 630227371.58399987 +/- 0.500000 s
Estimated background rate 1: 4744.444 near MET 630227351.200000 s
Estimated background rate 2: 4839.539 near MET 630227504.768000 s
Estimated total duration: 97.216 s (for data selection)
(from MET 630227358.400000 to MET 630227455.616000)
Estimated total fluence: 5224.214676 count
Created GTI with 4 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 214.477 -45.411 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 214.477 -45.411
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: 2020 12 21 7 245.108605 -61.600569
Obj: 2020 12 21 7 305.785102 -30.971759
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2020 12 21 7 146.035639 -80.235426
Obj: 2020 12 21 7 304.639302 -49.926853
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2020 12 21 7 130.397152 -75.607378
Obj: 2020 12 21 7 303.292551 -55.039433
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2020 12 21 7 76.016800 -43.165785
Obj: 2020 12 21 7 352.713711 -64.072020
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2020 12 21 7 76.678417 24.958851
Obj: 2020 12 21 7 32.961878 -0.441275
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2020 12 21 7 51.830760 10.508987
Obj: 2020 12 21 7 55.973316 -38.632264
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2020 12 21 7 289.599553 -13.481589
Obj: 2020 12 21 7 334.236108 8.118517
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2020 12 21 7 324.838438 -27.144753
Obj: 2020 12 21 7 311.580004 20.452400
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger1013852/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:
Mon Dec 21 02:46:03 EST 2020