batgrbproduct Analysis for Trigger=579571

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jun 10 01:28:11 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger579571
======================================================================

  Trigger: 00579571      Segment: 000

  BAT Trigger Time: 407239906.88   [s; MET]
      Trigger Stop: 407239908.928   [s; MET]
               UTC: 2013-11-27T10:11:35.555860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 332.750849413723   Dec: 36.5900862487713  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.02
     Image Trigger?:     NO
     Rate S/N Ratio:     11.2694276695846  [ if not an image trigger ]
     Image S/N Ratio:    9.02

  Flight Position:   [ source = BAT ]
    RA: 332.750849413723   Dec: 36.5900862487713  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 332.716412098834   Dec: 36.5965840056045  [deg; J2000]  
        { 22h 10m 51.9s , +36d 35' 47.7" }
         +/- 1.78975417456721 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.732460923111162 [arcmin] (formal 1-sigma fit error)
    SNR: 13.2429571607217
 
  Angular difference between Flight and Ground position is 1.704151 arcmin
 
  Partial Coding Fraction: 0.390625    [ including projection effects ]

  Duration
     T90: 94.9719999432564 +/- 15.1360080483202
        Measured from: -57.4079999923706
                   to: 37.5639999508858     [s; relative to TRIGTIME]
     T50: 26.1879999637604 +/- 4.04602718706892
        Measured from: -1.87999999523163
                   to: 24.3079999685287     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.53600001335144     
                   to: 0.46399998664856     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -60.3199999928474     
                   to: 51.2879999876022     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.737237   1.471202   0.606652  -0.005574
           0.092209   0.095312   0.083714   0.074677 [error]
 Peak      0.040499   0.047742   0.056930   0.014709
           0.009383   0.009647   0.009215   0.007342 [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 5.87e-07 6.46e-07 5.07e-07 6.56e-07 1.99e-06 2.40e-06   erg/cm2
              Error 5.90e-08 4.99e-08 7.66e-08 1.90e-07 1.74e-07 2.87e-07   erg/cm2
Peak flux Power-law 3.78e-01 4.20e-01 3.33e-01 4.37e-01 1.29e+00 1.57e+00   ph/cm2/s
              Error 1.31e-01 8.71e-02 7.37e-02 2.10e-01 2.41e-01 2.94e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.68e-07 6.83e-07 4.75e-07 2.46e-07 1.88e-06 1.97e-06   erg/cm2
              Error 6.42e-08 6.48e-08 9.33e-08 3.59e-07 2.04e-07 4.00e-07   erg/cm2
Peak flux Cutoff-PL 3.85e-01 4.22e-01 3.30e-01 4.23e-01 1.30e+00 1.56e+00   ph/cm2/s
              Error 1.32e-01 8.74e-02 7.54e-02 2.57e-01 2.41e-01 3.36e-01   ph/cm2/s
 
Fluence        Band 5.63e-07 6.78e-07 4.76e-07 2.48e-07 1.88e-06 1.99e-06   erg/cm2
              Error 6.16e-08 -------- -------- -------- 2.03e-07 --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   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    2.350    0.157    -      -           1.84e-03 2.01e-04   58.860 57
CPL   1.825    0.538      12.7   14.2      3.84e-03 3.79e-03   56.510 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.334    0.337    -      -           1.08e-02 1.95e-03   53.580 57
CPL   1.327    0.339    9999.4    0.0      1.08e-02 1.01e-02   53.580 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: 32.896000 sec.
T50 in the 50-300 keV band: 18.752000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  111.608  -60.320   51.288
T90    94.972  -57.408   37.564
T50    26.188   -1.880   24.308
Peak    1.000   -0.536    0.464
  • Click here for the BAT GCN circular template
  • Special notes of this burst

    Image

    Pre-slew 15.0-350.0 keV image (Event data)

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      332.7164    36.5966   0.0145    33.6428   -65.5397         2.9195887     13.243 TRIG_00579571                 
     
    Foreground time interval of the image:
    -60.320  29.821 (delta_t =  90.141 [sec])
    Background time interval of the image:
    -188.179 -60.320 (delta_t = 127.859 [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

    8 ms binning

    From T100_start-3 s to T100_start+3 s

    2 ms binning

    From T100_start-1 s to T100_start+1 s

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

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

    Quad-rate summed light curves (from T0-300s to T0+1000s)

    The mask-weighted light curves based on cleaned DPHs

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from  -60.320 sec. to   51.288 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.34995     ( -0.152573   0.160449 )
    Norm@50keV  : 1.84352E-03    ( -0.000201947   0.000199364 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.86 using 59 PHA bins.
    # Reduced chi-squared =          1.033 for     57 degrees of freedom 
    # Null hypothesis probability =   4.073353e-01
     
    Photon flux (15-150 keV)    in 111.6 sec: 0.331369 ( -0.024461  0.024472 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.98527e-06 ( -1.72727e-07  1.75978e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -60.320 sec. to   51.288 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.82498     ( -0.694485   0.381324 )
    Epeak [keV] : 12.7141      ( -12.026 16.282 )
    Norm@50keV  : 3.84058E-03    ( -0.00122818   0.00634704 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.51 using 59 PHA bins.
    # Reduced chi-squared =          1.009 for     56 degrees of freedom 
    # Null hypothesis probability =   4.558589e-01
     
    Photon flux (15-150 keV)    in 111.6 sec: 0.324073 ( -0.025638  0.025665 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.87677e-06 ( -1.98615e-07  2.09853e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -60.320 sec. to   51.288 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.91681   ( -14.1419   -4.91681 )
    beta        : -2.50176    ( -0.243729   0.190212 )
    Epeak [keV] : 20.6221      ( -3.02391 2.47134 )
    Norm@50keV   : 1272.03    ( -92.8653   4950.87 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.41 using 59 PHA bins.
    # Reduced chi-squared =         0.9893 for     55 degrees of freedom 
    # Null hypothesis probability =   4.971652e-01
     
    Photon flux (15-150 keV)    in 111.6 sec: 0.324062 ( 6.67594  -0.025367 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.87965e-06 ( -1.87886e-06  -2.04686e-07 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 8.03502  (-0.744434  0.812202)
    R^2/D10^2   : 0.340146  (-0.110511   0.168166)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          93.13 using 59 PHA bins.
    # Reduced chi-squared =          1.634 for     57 degrees of freedom 
    # Null hypothesis probability =   1.784623e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.446e-07   5.781e-08
    25- 50  7.841e-07   7.561e-08
    50-150  2.088e-07   5.485e-08
    15-150  1.438e-06   1.356e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 39.4973       (-7.11189      9.32668)
    Norm        : 2.13013       (-0.313243     0.382354)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.93 using 59 PHA bins.
    # Reduced chi-squared =          1.016 for     57 degrees of freedom 
    # Null hypothesis probability =   4.406638e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.435e-07   5.329e-08
    25- 50  7.112e-07   5.619e-08
    50-150  5.426e-07   1.248e-07
    15-150  1.797e-06   1.869e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.49189        (-0.794774      0.929167)
    R1^2/D10^2  : 2.75835        (-1.46562      3.66151)
    kT2 [keV]   : 14.4706        (-2.69379      4.22913)
    R2^2/D10^2  : 2.21131E-02    (-0.0147813   0.0327518)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.94 using 59 PHA bins.
    # Reduced chi-squared =         0.9807 for     55 degrees of freedom 
    # Null hypothesis probability =   5.153020e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.866e-07   2.321e-07
    25- 50  6.551e-07   2.165e-07
    50-150  5.912e-07   3.150e-07
    15-150  1.833e-06   6.243e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   -0.536 sec. to    0.464 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.33374     ( -0.337271   0.336645 )
    Norm@50keV  : 1.07599E-02    ( -0.00195449   0.00194979 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.58 using 59 PHA bins.
    # Reduced chi-squared =         0.9399 for     57 degrees of freedom 
    # Null hypothesis probability =   6.043442e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.29201 ( -0.240953  0.241583 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.05479e-07 ( -2.13181e-08  2.15571e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.536 sec. to    0.464 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.32700     ( -0.336773   0.341445 )
    Epeak [keV] : 9999.35      ( -9999.36 -9999.36 )
    Norm@50keV  : 1.08045E-02    ( -0.00196996   0.0183143 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.58 using 59 PHA bins.
    # Reduced chi-squared =         0.9568 for     56 degrees of freedom 
    # Null hypothesis probability =   5.669440e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.29514 ( -0.24442  0.2383 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.05663e-07 ( -2.1491e-08  2.1121e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.536 sec. to    0.464 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.07672   ( 1.07786   1.07786 )
    beta        : -1.33364    ( 1.33371   0.337634 )
    Epeak [keV] : 42.9172      ( -42.0025 -42.0025 )
    Norm@50keV   : 2.00981E-02    ( -0.0113082   1.70779 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.58 using 59 PHA bins.
    # Reduced chi-squared =         0.9741 for     55 degrees of freedom 
    # Null hypothesis probability =   5.292077e-01
     
    Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 18.8324  (-4.38008  6.00069)
    R^2/D10^2   : 6.86548E-02  (-0.0409517   0.0974201)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          63.80 using 59 PHA bins.
    # Reduced chi-squared =          1.119 for     57 degrees of freedom 
    # Null hypothesis probability =   2.498992e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.801e-09   1.721e-09
    25- 50  2.295e-08   7.255e-09
    50-150  5.971e-08   2.390e-08
    15-150  8.746e-08   2.600e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 5.33527       (-0.97486     0.974786)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.53 using 59 PHA bins.
    # Reduced chi-squared =         0.9741 for     57 degrees of freedom 
    # Null hypothesis probability =   5.305408e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.329e-08   7.675e-09
    25- 50  2.556e-08   1.465e-08
    50-150  5.605e-08   3.156e-08
    15-150  9.490e-08   5.475e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.11616        (-2.18141      4.31984)
    R1^2/D10^2  : 4.23611        (-3.72368      52.4296)
    kT2 [keV]   : 27.3483        (-8.17697      31.6266)
    R2^2/D10^2  : 1.78713E-02    (-0.0159713   0.0225819)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.31 using 59 PHA bins.
    # Reduced chi-squared =         0.9693 for     55 degrees of freedom 
    # Null hypothesis probability =   5.392970e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.349e-08   7.580e-09
    25- 50  2.089e-08   1.124e-08
    50-150  7.165e-08   4.240e-08
    15-150  1.060e-07   5.835e-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: 2.27514     ( -0.160976   0.169343 )
    Norm@50keV  : 1.98615E-03    ( -0.000228014   0.000224371 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          63.26 using 59 PHA bins.
    # Reduced chi-squared =          1.110 for     57 degrees of freedom 
    # Null hypothesis probability =   2.649836e-01
     
    Photon flux (15-150 keV)    in 90.14 sec: 0.342362 ( -0.0270269  0.0270352 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.70316e-06 ( -1.60539e-07  1.6392e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.95121     ( -0.666346   0.0437177 )
    Epeak [keV] : 5.84427      ( -4.32018 25.6791 )
    Norm@50keV  : 3.11526E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.46 using 59 PHA bins.
    # Reduced chi-squared =          1.115 for     56 degrees of freedom 
    # Null hypothesis probability =   2.574445e-01
     
    Photon flux (15-150 keV)    in 90.14 sec: 0.337965 ( -0.028152  0.028183 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.6444e-06 ( -1.8933e-07  1.96983e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.97562   ( 1.97996   1.97996 )
    beta        : -10.0000    ( 10   20 )
    Epeak [keV] : 3.16154      ( -1.75559 27.7214 )
    Norm@50keV   : 3.00983E-03    ( -0.000494995   0.00483105 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.46 using 59 PHA bins.
    # Reduced chi-squared =          1.136 for     55 degrees of freedom 
    # Null hypothesis probability =   2.282178e-01
     
    Photon flux (15-150 keV)    in 90.14 sec: 0.337963 ( 6.66204  -0.028053 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 6.46e-07
    S(50-100 keV) = 5.07e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 94.9719999432564 sec.
    Hardness ratio (energy fluence ratio) = 0.78483
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.846863
    Count Ratio (50-100 keV) / (15-25 keV) = 0.349205
    

    Mask shadow pattern

    IMX = 2.755486943051441E-01, IMY = 6.057471466918921E-01
    

    TIME vs. PHA plot around the trigger time

    TIME vs. DetID plot around the trigger time

    100 us light curve (15-350 keV)

    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:
    -188.179410 -60.320000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    326.0298  38.1837    7.5  39.1  -63.9   0.4791   1.5   10.6	Cyg X-2                       
     31.2384   4.5902    2.1  29.2  129.2   0.9456   5.4 ------	UNKNOWN                       
    315.2128  75.6318    2.2  56.7  -17.7   2.5639   5.2 ------	UNKNOWN                       
    331.0991   0.4482    2.4  45.4 -121.2   2.8858   4.9 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -60.320000 29.820620
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    326.2695  38.2217    6.1  38.9  -63.8  -0.5678  -1.9    7.6	Cyg X-2                       
     53.5213  72.5656    2.2  52.4   11.4   2.5211   5.2 ------	UNKNOWN                       
      1.1026  -6.0704    2.3  33.0 -166.8   0.7100   4.9  370.2	UNKNOWN                       
    332.7164  36.5966    0.9  33.6  -65.5   2.9197  13.2 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    83.220600 962.184700
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    299.6194  35.1797    1.6  26.8  -65.2   5.1722   7.2    1.9	Cyg X-1                       
    308.0922  40.9579    0.8  19.7  -51.8   7.4261  14.7    0.9	Cyg X-3                       
    326.2211  38.3822    2.6   5.5  -51.3   2.0257   4.4    4.3	Cyg X-2                       
    357.4361 -12.8308    3.4  54.6  167.9  10.2813   3.4 ------	UNKNOWN                       
    327.6241   8.0744    3.9  28.9 -151.6   1.5029   2.9 ------	UNKNOWN                       
    297.4079  30.2092    0.9  30.0  -74.0   9.2029  13.0 ------	UNKNOWN                       
    295.5564  12.6546    4.9  41.0  -98.1   5.8989   2.3 ------	UNKNOWN                       
    
    Plot creation:
    Wed Jun 10 01:45:46 EDT 2015