batgrbproduct analysis for trigger=1219563

batgrbproduct Analysis for Trigger=1219563

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Tue Mar 12 07:51:16 EDT 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1219563/GCN5_download_cron
======================================================================

  Trigger: 01219563      Segment: 000

  BAT Trigger Time: 731861760   [s; MET]
      Trigger Stop: 731861824   [s; MET]
               UTC: 2024-03-11T14:55:26.932660    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 135.798721173261   Dec: -40.4498409726078  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.83
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.83

  Flight Position:   [ source = BAT ]
    RA: 135.798721173261   Dec: -40.4498409726078  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 135.765008443685   Dec: -40.3071548227675  [deg; J2000]  
        { 09h 03m 03.6s , -40d 18' 25.8" }
         +/- 4.22511213801749 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.87359775509224 [arcmin] (formal 1-sigma fit error)
    SNR: 3.88207347979945
 
  Angular difference between Flight and Ground position is 8.698735 arcmin
 
  Partial Coding Fraction: 0.6171875    [ including projection effects ]

  Duration
     T90: 144 +/- 35.7770876399966
        Measured from: -14.9999998807907
                   to: 129.000000119209     [s; relative to TRIGTIME]
     T50: 48 +/- 22.6274169979695
        Measured from: 17.0000001192093
                   to: 65.0000001192093     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 40.5     
                   to: 41.5     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15     
                   to: 145     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.459288   1.121997   0.310845   0.019542
           0.097433   0.098455   0.081279   0.068758 [error]
 Peak      0.014228   0.002376   0.013721   0.007884
           0.008119   0.008662   0.006414   0.006104 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 4.72e-07 4.47e-07 2.94e-07 3.01e-07 1.34e-06 1.51e-06   erg/cm2
              Error 5.44e-08 4.91e-08 6.52e-08 1.22e-07 1.56e-07 2.23e-07   erg/cm2
Peak flux Power-law 9.11e-02 9.44e-02 6.91e-02 8.14e-02 2.86e-01 3.36e-01   ph/cm2/s
              Error 1.04e-01 7.96e-02 5.98e-02 1.53e-01 1.86e-01 2.10e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.52e-07 5.20e-07 1.37e-07 4.42e-09 1.11e-06 1.11e-06   erg/cm2
              Error 5.95e-08 6.71e-08 1.29e-07 2.93e-08 1.58e-07 1.61e-07   erg/cm2
Peak flux Cutoff-PL 8.75e-02 9.53e-02 7.06e-02 7.07e-02 2.84e-01 3.26e-01   ph/cm2/s
              Error 1.03e-01 8.60e-02 6.49e-02 1.52e-01 1.90e-01 2.72e-01   ph/cm2/s
 
Fluence        Band 4.43e-07 5.13e-07 1.78e-07 7.24e-08 1.18e-06 1.21e-06   erg/cm2
              Error 6.05e-08 6.68e-08 -------- 1.00e-07 1.65e-07 --------   erg/cm2
Peak flux      Band 8.06e-02 9.55e-02 7.32e-02 6.05e-02 2.79e-01 3.10e-01   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.603    0.209    -      -           8.11e-04 1.32e-04   61.970 57
CPL   0.220    2.057      23.4    9.3      3.32e-02 1.08e+00   53.470 56
 
The chi2 of BB fit is 55.11 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.450    1.457    -      -           2.32e-03 1.89e-03   47.090 57
CPL   1.295    0.000     259.8    0.0      2.73e-03 0.00e+00   47.080 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  160.000  -15.000  145.000
T90   144.000  -15.000  129.000
T50    48.000   17.000   65.000
Peak    1.000   40.500   41.500
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte

    Image

    Pre-slew 15-350 keV image (Event data; bkg subtracted)

    #   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
      135.7650 -40.3072 0.0497   24.3 -111.2       2.4116     3.9  TRIG_01219563       
    ------------------------------------------
     
    Foreground time interval of the image:
    -15.000  72.101 (delta_t =  87.101 [sec])
    Background time interval of the image:
    -19.799 -15.000 (delta_t =   4.799 [sec])
    

    Lightcurves

    Notes:

    1 s binning

    From T0-310 s to T0+310 s
    From T100_start - 20 s to T100_end + 30 s
    Full time interval

    64 ms binning

    Full time interval
    From T100_start to T100_end
    From T0-5 sec to T0+5 sec

    16 ms binning

    From T100_start-5 s to T100_start+5 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    8 ms binning

    From T100_start-3 s to T100_start+3 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    2 ms binning

    From T100_start-1 s to T100_start+1 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    SN=5 or 10 sec. binning (whichever binning is satisfied first)

    SN=5 or 10 sec. binning (T < 200 sec)

    Spectra

    Notes:

    Time averaged spectrum fit using the pre-slew DRM

    Power-law model
    Time interval is from  -15.000 sec. to  145.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.60315     ( -0.201384   0.217183 )
    Norm@50keV  : 8.10972E-04    ( -0.000132066   0.000132644 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.97 using 59 PHA bins.
    # Reduced chi-squared =          1.087 for     57 degrees of freedom 
    # Null hypothesis probability =   3.034319e-01
     
    Photon flux (15-150 keV)    in 160 sec: 0.169937 ( -0.0159834  0.0159835 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.33689e-06 ( -1.53419e-07  1.58317e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -15.000 sec. to  145.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.219872     ( -2.54937   1.56558 )
    Epeak [keV] : 23.3589      ( -14.5336 4.13534 )
    Norm@50keV  : 3.31588E-02    ( -0.036122   2.12409 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.47 using 59 PHA bins.
    # Reduced chi-squared =         0.9549 for     56 degrees of freedom 
    # Null hypothesis probability =   5.710572e-01
     
    Photon flux (15-150 keV)    in 160 sec: 0.160717 ( -0.016558  0.016599 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.11298e-06 ( -1.43133e-07  1.73189e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -15.000 sec. to  145.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 1.23811   ( -1.65214   -0.520862 )
    beta        : -3.67204    ( -1.912   0.670274 )
    Epeak [keV] : 24.6680      ( -5.74356 3.51437 )
    Norm@50keV   : 0.380976    ( -0.366696   100.241 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.32 using 59 PHA bins.
    # Reduced chi-squared =         0.9149 for     55 degrees of freedom 
    # Null hypothesis probability =   6.537981e-01
     
    Photon flux (15-150 keV)    in 160 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.17974e-06 ( -1.17862e-06  -1.58955e-07 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 6.60342  (-0.583885  0.641972)
    R^2/D10^2   : 0.414245  (-0.13655   0.205011)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.11 using 59 PHA bins.
    # Reduced chi-squared =         0.9669 for     57 degrees of freedom 
    # Null hypothesis probability =   5.461251e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.352e-07   6.208e-08
    25- 50  5.309e-07   7.816e-08
    50-150  7.091e-08   2.555e-08
    15-150  1.037e-06   1.300e-07
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 26.6135       (-5.07601      6.72113)
    Norm        : 1.52331       (-0.300522     0.391796)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.641e-07   5.728e-08
    25- 50  4.947e-07   6.528e-08
    50-150  2.302e-07   8.517e-08
    15-150  1.189e-06   1.494e-07
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.93180        (-0.973159      0.82046)
    R1^2/D10^2  : 0.595884        (-0.22474      0.462889)
    kT2 [keV]   : 20.7743        (-8.73772      -22.4238)
    R2^2/D10^2  : 1.03854E-03    (-0.000829922   0.0235663)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.520e-07   1.212e-07
    25- 50  4.959e-07   1.719e-07
    50-150  2.606e-07   1.595e-07
    15-150  1.208e-06   3.782e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   40.500 sec. to   41.500 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.44964     ( -1.39828   1.5148 )
    Norm@50keV  : 2.32209E-03    ( -0.00232209   0.00145043 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.09 using 59 PHA bins.
    # Reduced chi-squared =         0.8261 for     57 degrees of freedom 
    # Null hypothesis probability =   8.225304e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.286138 ( -0.18468  0.187956 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.2222e-08 ( -1.48019e-08  1.51423e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   40.500 sec. to   41.500 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.29524     ( -1.29685   -1.29685 )
    Epeak [keV] : 259.808      ( -260.662 -260.662 )
    Norm@50keV  : 2.72917E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.08 using 59 PHA bins.
    # Reduced chi-squared =         0.8408 for     56 degrees of freedom 
    # Null hypothesis probability =   7.962062e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.284007 ( -0.284007  0.095055 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.22311e-08 ( -1.48136e-08  1.50935e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   40.500 sec. to   41.500 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.44646   ( -0.979928   1.0201 )
    beta        : -9.37167    ( 9.37167   9.37167 )
    Epeak [keV] : 9985.17      ( -447.413 -457.238 )
    Norm@50keV   : 2.32959E-03    ( -0.00156934   0.305467 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.09 using 59 PHA bins.
    # Reduced chi-squared =         0.8561 for     55 degrees of freedom 
    # Null hypothesis probability =   7.671998e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.279294 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     XSPEC: quit
     
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 19.8517  (-11.755  50.0258)
    R^2/D10^2   : 1.26136E-02  (-0.0126004   0.250696)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.611e-10   6.960e-10
    25- 50  4.764e-09   3.253e-09
    50-150  1.390e-08   1.107e-08
    15-150  1.963e-08   1.501e-08
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-199.363      -199.363)
    Norm        : 1.18575       (-0.741153     1.30247)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.953e-09   2.139e-09
    25- 50  5.680e-09   4.082e-09
    50-150  1.246e-08   8.435e-09
    15-150  2.109e-08   1.481e-08
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 2.97405        (-2.93734      36.843)
    R1^2/D10^2  : 14.4977        (-21.2664      -21.2664)
    kT2 [keV]   : 23.4215        (-12.864      -23.0291)
    R2^2/D10^2  : 6.72933E-03    (-0.00707075   0.0409499)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.230e-09   2.022e-09
    25- 50  3.997e-09   2.459e-09
    50-150  1.488e-08   1.107e-08
    15-150  2.211e-08   1.365e-08
    

    Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

    Power-law model
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.55703     ( -0.20928   0.226557 )
    Norm@50keV  : 1.10572E-03    ( -0.00018978   0.00019052 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.29 using 59 PHA bins.
    # Reduced chi-squared =          1.163 for     57 degrees of freedom 
    # Null hypothesis probability =   1.870346e-01
     
    Photon flux (15-150 keV)    in 87.1 sec: 0.225030 ( -0.022807  0.0228088 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.7856e-07 ( -1.21787e-07  1.25975e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.119733     ( -2.45148   1.55157 )
    Epeak [keV] : 24.3196      ( -12.2114 4.0847 )
    Norm@50keV  : 4.84760E-02    ( -0.0519156   2.64063 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.14 using 59 PHA bins.
    # Reduced chi-squared =          1.020 for     56 degrees of freedom 
    # Null hypothesis probability =   4.324863e-01
     
    Photon flux (15-150 keV)    in 87.1 sec: 0.214334 ( -0.023034  0.023124 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 8.16877e-07 ( -1.09844e-07  1.29778e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 1.57111   ( -1.74853   -0.833068 )
    beta        : -3.54791    ( 3.53725   0.684931 )
    Epeak [keV] : 24.8717      ( -4.96172 3.35064 )
    Norm@50keV   : 0.880424    ( -0.88504   136.942 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.48 using 59 PHA bins.
    # Reduced chi-squared =         0.9905 for     55 degrees of freedom 
    # Null hypothesis probability =   4.944896e-01
     
    Photon flux (15-150 keV)    in 87.1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 8.69409e-07 ( -8.68799e-07  -1.23888e-07 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 4.47e-07
    S(50-100 keV) = 2.94e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 144 sec.
    Hardness ratio (energy fluence ratio) = 0.657718
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.768866
    Count Ratio (50-100 keV) / (15-25 keV) = 0.213011
    

    Mask shadow pattern

    IMX = -1.637113721994272E-01, IMY = 4.217453020222796E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    Spacecraft aspect plot

    Bright source in the pre-burst/pre-slew/post-slew images

    Pre-burst image of 15-350 keV band

    Time interval of the image:
    -19.799400 -15.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5702 -40.5834    2.6  24.6 -111.3   0.1510   4.4    2.6	Vela X-1                      
    170.5181 -60.6413    5.1  44.8 -150.6   0.1149   2.3    6.1	Cen X-3                       
    186.5377 -62.8231   61.5  51.3 -156.6  -0.0139  -0.2    4.6	GX 301-2                      
    111.2867   4.8345    2.3  43.6  -16.6   0.2102   5.0 ------	UNKNOWN                       
    

    Pre-slew background subtracted image of 15-350 keV band

    Time interval of the image:
    -15.000000 72.100600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.3907 -40.6584    7.0  24.8 -111.1  -1.0503  -1.7    8.8	Vela X-1                      
    170.4918 -60.7409 1809.1  44.9 -150.4   0.0054   0.0    8.8	Cen X-3                       
    186.7738 -62.6714    9.5  51.3 -156.8   1.6285   1.2    6.7	GX 301-2                      
    207.3558 -43.1915    3.1  54.8  174.8   7.5081   3.7 ------	UNKNOWN                       
    182.4327 -70.6218    2.3  55.8 -148.4  14.6067   5.1 ------	UNKNOWN                       
    100.4417 -21.8501    2.5  45.1  -58.1  10.2656   4.6 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    132.900610 364.110000
    365.000000 455.880000
    457.000000 963.094100
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.4989 -40.5874    1.2   0.1  -84.9  10.3408   9.3    2.4	Vela X-1                      
    170.4512 -60.5061   10.0  29.2 -171.2   1.3830   1.1    8.1	Cen X-3                       
    186.6762 -62.8183    4.5  37.2 -172.0   3.9158   2.6    2.9	GX 301-2                      
    141.0142 -20.5358    2.5  20.5   58.4   5.4941   4.6 ------	UNKNOWN                       
    
    Plot creation:
    Tue Mar 12 07:54:37 EDT 2024