TDRSS lightcurve for Trigger=1434591

Notes:

GCN BAT Position Notice



GCN BAT Lightcurve Notice


TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 09 Jan 26 13:07:07 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     1434591,   Seg_Num: 0
POINT_RA:        123.730d {+08h 14m 55s} (J2000)
POINT_DEC:       -35.263d {-35d 15' 45"} (J2000)
POINT_ROLL:      165.983d
IMG_START_DATE:  21049 TJD;     9 DOY;   26/01/09
IMG_START_TIME:  46911.63 SOD {13:01:51.63} UT,   26688.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.838
N_STARS:         190
X_OFFSET:        206 [pixels]
Y_OFFSET:        333 [pixels]
X_MAX:           1645 [pixels]
Y_MAX:           1772 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    7
SL_URL:          sw01434591000msufc458688.fits
SUN_POSTN:       290.87d {+19h 23m 28s}  -22.05d {-22d 02' 57"}
SUN_DIST:        121.28 [deg]   Sun_angle= 11.1 [hr] (West of Sun)




 GCN template for BAT paragraph 


  •  Click here! 

    At :: UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB  ***A*** (trigger=1434591).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec ,  which is 
   RA(J2000) = h m s
   Dec(J2000) = d ' "
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 ~5187 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: 168.576 s +/- 5.14894 s
  Estimated T50 duration: 102.4 s +/- 2.98545 s
  Estimated Peak Interval: MET   789655769.85599995 +/- 0.500000 s
  Estimated background rate 1:     4890.000 near MET 789655650.400000 s
  Estimated background rate 2:     4690.918 near MET 789655853.824000 s
  Estimated total duration: 196.928 s (for data selection)
       (from MET 789655652.800000 to MET 789655849.728000)
  Estimated total fluence: 68532.850045 count
  Created GTI with 107 entries
------------------------------------------
 

    

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

    bat_grb_pos_cat.sh   0.083

Usage: bat_grb_pos_cat.sh   []

   Searches through the BAT GRB position (all numbers in degrees)


    

    Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)
    

    python compare_catalog.py  
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
    

    Usage elevation_grd_obs.sh (ra) (dec) (UT year) (UT month) (UT day) (UT hour)
 
 
The data/results are in /local/data/bat1/prebascript/trigger1434591/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:
Fri Jan  9 08:08:03 EST 2026