TDRSS lightcurve for Trigger=1014037

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 21 Dec 20 23:06:55 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1014037,   Seg_Num: 0
GRB_RA:          171.049d {+11h 24m 12s} (J2000),
                 171.334d {+11h 25m 20s} (current),
                 170.368d {+11h 21m 28s} (1950)
GRB_DEC:         +42.144d {+42d 08' 39"} (J2000),
                 +42.029d {+42d 01' 44"} (current),
                 +42.419d {+42d 25' 09"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1329 [cnts]    Image_Peak=188 [image_cnts]
TRIGGER_DUR:     0.128 [sec] 
TRIGGER_INDEX:   32     E_range: 25-100 keV
BKG_INTEN:       17016 [cnts]
BKG_TIME:        83181.80 SOD {23:06:21.80} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19204 TJD;   356 DOY;   20/12/21
GRB_TIME:        83194.28 SOD {23:06:34.28} UT
GRB_PHI:          70.36 [deg]
GRB_THETA:        35.65 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     78.12 [sigma]
IMAGE_SIGNIF:    13.97 [sigma]
MERIT_PARAMS:     +1  +0  +0  -3  +2  +3  +0  +0 +37  +0 
SUN_POSTN:       270.61d {+18h 02m 26s}  -23.43d {-23d 26' 04"}
SUN_DIST:        112.09 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:        2.44d {+00h 09m 45s}   -4.64d {-04d 38' 11"}
MOON_DIST:       141.32 [deg]
MOON_ILLUM:      50 [%]
GAL_COORDS:      167.13, 66.73 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      153.03, 34.73 [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 = 142.30,19.25 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=630284799).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 21 Dec 20 23:23:21 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1014037,   Seg_Num: 0
GRB_RA:          171.049d {+11h 24m 12s} (J2000),
                 171.334d {+11h 25m 20s} (current),
                 170.368d {+11h 21m 28s} (1950)
GRB_DEC:         +42.144d {+42d 08' 39"} (J2000),
                 +42.029d {+42d 01' 44"} (current),
                 +42.419d {+42d 25' 09"} (1950)
GRB_DATE:        19204 TJD;   356 DOY;   20/12/21
GRB_TIME:        83194.28 SOD {23:06:34.28} UT
TRIGGER_INDEX:   32
GRB_PHI:          70.36 [deg]
GRB_THETA:        35.65 [deg]
DELTA_TIME:      32.00 [sec]
TRIGGER_DUR:     0.128 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     78.12 [sigma]
IMAGE_SIGNIF:    13.97 [sigma]
LC_URL:          sw01014037000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 23:06:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 201221 ***A*** (trigger=1014037).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 171.049, +42.144 which is 
   RA(J2000) = 11h 24m 12s
   Dec(J2000) = +42d 08' 39"
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 ~8968 counts/sec (15-350 keV), at ~0 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: 0.128 s +/- 0.128 s
  Estimated T50 duration: 0.128 s +/- 0.128 s
  Estimated Peak Interval: MET   630284820.67199993 +/- 0.500000 s
  Estimated background rate 1:     4278.547 near MET 630284808.640000 s
  Estimated background rate 2:     4288.595 near MET 630284913.728000 s
  Estimated total duration: 0.256 s (for data selection)
       (from MET 630284820.480000 to MET 630284820.736000)
  Estimated total fluence: 2021.596098 count
  Created GTI with 3 entries
------------------------------------------

    Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)

    bat_grb_pos_cat.sh 171.049 42.144 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 171.049 42.144
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 23 70.234115  -13.058116
 Obj: 2020 12 21 23 185.449776  -8.735776
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 21 23 50.035259  14.445438
 Obj: 2020 12 21 23 159.998225  -12.323530
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 21 23 45.507850  17.063942
 Obj: 2020 12 21 23 156.022049  -8.889563
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 21 23 12.404938  45.734191
 Obj: 2020 12 21 23 135.275718  0.158931
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 21 23 270.817445  48.619390
 Obj: 2020 12 21 23 143.473864  1.824727
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 21 23 304.783032  7.006299
 Obj: 2020 12 21 23 115.942511  60.480789
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 21 23 92.434935  -59.996695
 Obj: 2020 12 21 23 222.936064  3.396791
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2020 12 21 23 67.733528  8.434098
 Obj: 2020 12 21 23 218.514375  -74.250640
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1014037/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 18:23:43 EST 2020