TDRSS lightcurve for Trigger=1217733

Notes:

GCN BAT Position Notice



GCN BAT Lightcurve Notice


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 27 Feb 24 05:44:48 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1217733,   Seg_Num: 0
GRB_RA:           84.243d {+05h 36m 58s} (J2000),
                  84.606d {+05h 38m 26s} (current),
                  83.492d {+05h 33m 58s} (1950)
GRB_DEC:         +21.777d {+21d 46' 38"} (J2000),
                 +21.790d {+21d 47' 25"} (current),
                 +21.747d {+21d 44' 50"} (1950)
GRB_DATE:        20367 TJD;    58 DOY;   24/02/27
GRB_TIME:        20431.01 SOD {05:40:31.01} UT
TRIGGER_INDEX:   20000
GRB_PHI:           0.02 [deg]
GRB_THETA:        43.38 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x413
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    10.09 [sigma]
LC_URL:          sw01217733000msb.lc




 GCN template for BAT paragraph 


  •  Click here! 

    At 05:40:31 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 240227 ***A*** (trigger=1217733).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 84.243, +21.777 which is 
   RA(J2000) = 05h 36m 58s
   Dec(J2000) = +21d 46' 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 ~1179 counts/sec (15-350 keV), at ~2 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 background rate 1:     4195.037 near MET 730705299.904000 s
  Estimated background rate 2:     4327.703 near MET 730705404.864000 s
  Estimated total fluence: 0.000000 count
  Created GTI with 2 entries
------------------------------------------
 

    

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

    bat_grb_pos_cat.sh 84.243 21.777 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 84.243 21.777
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: 2024 2 27 5 169.181770  -59.139567
 Obj: 2024 2 27 5 95.537687  29.023349

    

  •  the object visibility at GSFC, Greenbelt, Maryland

     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2024 2 27 5 113.498898  -46.614229
 Obj: 2024 2 27 5 81.477196  56.887219

    

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

     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2024 2 27 5 109.969901  -41.313846
 Obj: 2024 2 27 5 73.708678  61.463378

    

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

     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2024 2 27 5 83.877195  -8.361584
 Obj: 2024 2 27 5 255.376419  81.335585

    

  •  the object visibility at Mauna Kea, Hawaii 

     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2024 2 27 5 112.441580  46.115329
 Obj: 2024 2 27 5 237.940506  8.529332

    

  •  the object visibility at Siding Spring Obs., Australia 

     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2024 2 27 5 32.134438  41.504143
 Obj: 2024 2 27 5 256.208238  19.121472

    

  •  the object visibility at Tokyo, Japan 

     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2024 2 27 5 259.062022  -36.058205
 Obj: 2024 2 27 5 129.747217  -19.232892

    

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

     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2024 2 27 5 359.511499  -51.150935
 Obj: 2024 2 27 5 115.988100  0.751255

    

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

     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1217733/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:
Tue Feb 27 00:45:22 EST 2024