TDRSS lightcurve for Trigger=1159434

Notes:

GCN BAT Position Notice



GCN BAT Lightcurve Notice


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Mar 23 19:28:49 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1159434,   Seg_Num: 0
GRB_RA:          245.067d {+16h 20m 16s} (J2000),
                 245.397d {+16h 21m 35s} (current),
                 244.355d {+16h 17m 25s} (1950)
GRB_DEC:         -15.891d {-15d 53' 25"} (J2000),
                 -15.945d {-15d 56' 40"} (current),
                 -15.772d {-15d 46' 17"} (1950)
GRB_DATE:        20014 TJD;    70 DOY;   23/03/11
GRB_TIME:        69889.09 SOD {19:24:49.09} UT
TRIGGER_INDEX:   20000
GRB_PHI:           1.29 [deg]
GRB_THETA:        42.08 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     


 GCN template for BAT paragraph 


  •  Click here! 

    At 19:24:49 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 230311 ***A*** (trigger=1159434).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 245.067, -15.891 which is 
   RA(J2000) = 16h 20m 16s
   Dec(J2000) = -15d 53' 25"
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 ~1082 counts/sec (15-350 keV), at ~179 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
    




    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: 49.152 s +/- 28.9631 s
  Estimated T50 duration: 49.152 s +/- 37.7633 s
  Estimated Peak Interval: MET   700255658.81599998 +/- 0.500000 s
  Estimated background rate 1:     3028.759 near MET 700255551.808000 s
  Estimated background rate 2:     3636.149 near MET 700255681.344000 s
  Estimated total duration: 49.152 s (for data selection)
       (from MET 700255607.616000 to MET 700255656.768000)
  Estimated total fluence: -5098.833900 count
  Created GTI with 5 entries
------------------------------------------
 

    

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

    bat_grb_pos_cat.sh 245.067 -15.891 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 245.067 -15.891
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: 2023 3 11 19 34.460841  41.490320
 Obj: 2023 3 11 19 104.519203  -41.871281

    

  •  the object visibility at GSFC, Greenbelt, Maryland

     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 19 344.904802  53.706418
 Obj: 2023 3 11 19 79.969367  -14.499922

    

  •  the object visibility at MMT, Mt. Hopkins, Arizona 

     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 19 336.278185  50.452930
 Obj: 2023 3 11 19 77.316316  -9.881584

    

  •  the object visibility at Hale Telescope, Palomar Mt., California

     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 19 287.994892  32.494860
 Obj: 2023 3 11 19 59.262567  26.925078

    

  •  the object visibility at Mauna Kea, Hawaii 

     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 19 283.211353  -14.170178
 Obj: 2023 3 11 19 189.531950  74.460876

    

  •  the object visibility at Siding Spring Obs., Australia 

     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 19 251.214824  -30.968496
 Obj: 2023 3 11 19 336.787361  36.392067

    

  •  the object visibility at Tokyo, Japan 

     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 19 84.016953  3.377165
 Obj: 2023 3 11 19 219.054992  -74.007950

    

  •  the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain

     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2023 3 11 19 126.313096  50.313198
 Obj: 2023 3 11 19 47.662013  -28.144530

    

  •  the object visibility at Gemini South, Cerro Pachon, Chile 

     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1159434/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 Mar 11 14:32:02 EST 2023