batgrbproduct Analysis for Trigger=582374

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Jun  9 12:28:51 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger582374
======================================================================

  Trigger: 00582374      Segment: 000

  BAT Trigger Time: 409991975.616   [s; MET]
      Trigger Stop: 409991976.064   [s; MET]
               UTC: 2013-12-29T06:39:24.163760    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) Expanded to TRIGTIME - 64 ms to TRIGTIME + 320 ms

  BAT 
    RA: 85.2356212466857   Dec: -4.43148525974796  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.86
     Image Trigger?:     NO
     Rate S/N Ratio:     20.174241001832  [ if not an image trigger ]
     Image S/N Ratio:    7.86

  Flight Position:   [ source = BAT ]
    RA: 85.2356212466857   Dec: -4.43148525974796  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 85.2363671642732   Dec: -4.40212651138017  [deg; J2000]  
        { 05h 40m 56.7s , -04d 24' 07.7" }
         +/- 0.574528098862354 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.146624207548326 [arcmin] (formal 1-sigma fit error)
    SNR: 67.1366114067294
 
  Angular difference between Flight and Ground position is 1.762090 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 48 +/- 16
        Measured from: 0.38400000333786
                   to: 48.3840000033379     [s; relative to TRIGTIME]
     T50: 16 +/- 16
        Measured from: 0.38400000333786
                   to: 16.3840000033379     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.88400000333786     
                   to: 8.88400000333786     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.38400000333786     
                   to: 96.3840000033379     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.898441   3.285647   3.330946   1.120465
           0.058869   0.062483   0.056425   0.045733 [error]
 Peak      0.014585   0.032644   0.014037   0.004237
           0.006153   0.006339   0.005373   0.004189 [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 5.60e-07 1.34e-06 2.54e-06 1.18e-05 6.89e-06 1.62e-05   erg/cm2
              Error 2.83e-08 3.92e-08 5.87e-08 6.67e-07 1.54e-07 6.82e-07   erg/cm2
Peak flux Power-law 1.72e-01 1.76e-01 1.26e-01 1.45e-01 5.31e-01 6.19e-01   ph/cm2/s
              Error 7.81e-02 5.04e-02 4.39e-02 1.06e-01 1.45e-01 1.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.59e-07 1.34e-06 2.55e-06 1.09e-05 6.89e-06 1.53e-05   erg/cm2
              Error 3.32e-08 3.38e-08 6.60e-08 1.32e-06 1.50e-07 1.52e-06   erg/cm2
Peak flux Cutoff-PL 1.74e-01 1.76e-01 1.25e-01 1.41e-01 5.31e-01 6.18e-01   ph/cm2/s
              Error 7.79e-02 6.69e-02 8.52e-02 1.13e-01 1.44e-01 2.19e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    1.073    0.042    -      -           6.80e-03 1.54e-04   49.510 57
CPL   1.067    0.042    9988.1    0.0      6.84e-03 6.23e-04   49.500 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.475    0.481    -      -           4.28e-03 1.19e-03   67.670 57
CPL   1.484    0.685    9999.4    0.0      4.27e-03 8.72e-03   67.670 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: 13.056000 sec.
T50 in the 50-300 keV band: 7.424000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   96.000    0.384   96.384
T90    48.000    0.384   48.384
T50    16.000    0.384   16.384
Peak    1.000    7.884    8.884
  • 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
       85.2364    -4.4021   0.0029    18.1276   178.4870         3.2945669     67.137 TRIG_00582374                 
     
    Foreground time interval of the image:
      0.384   9.485 (delta_t =   9.101 [sec])
    Background time interval of the image:
    -103.315   0.384 (delta_t = 103.699 [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    0.384 sec. to   96.384 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.07302     ( -0.0416669   0.0413998 )
    Norm@50keV  : 6.80265E-03    ( -0.000153809   0.000153249 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.51 using 59 PHA bins.
    # Reduced chi-squared =         0.8685 for     57 degrees of freedom 
    # Null hypothesis probability =   7.492452e-01
     
    Photon flux (15-150 keV)    in 96 sec: 0.787131 ( -0.0188001  0.0188676 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.88777e-06 ( -1.53683e-07  1.53843e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.384 sec. to   96.384 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.06726     ( -0.0419691   0.0417332 )
    Epeak [keV] : 9988.07      ( -9987.54 -9987.54 )
    Norm@50keV  : 6.83998E-03    ( -0.000146557   0.00109987 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.50 using 59 PHA bins.
    # Reduced chi-squared =         0.8839 for     56 degrees of freedom 
    # Null hypothesis probability =   7.176646e-01
     
    Photon flux (15-150 keV)    in 96 sec: 0.786754 ( -0.018453  0.018723 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.88975e-06 ( -1.4735e-07  1.53389e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.384 sec. to   96.384 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.891081   ( 0.891081   0.891081 )
    beta        : -1.07302    ( -0.041377   0.0416979 )
    Epeak [keV] : 40.9337      ( -40.9337 -40.9337 )
    Norm@50keV   : 1.17577E-02    ( -0.00413424   313711 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.51 using 59 PHA bins.
    # Reduced chi-squared =         0.9001 for     55 degrees of freedom 
    # Null hypothesis probability =   6.837769e-01
     
    Photon flux (15-150 keV)    in 96 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]    : 23.2364  (  )
    R^2/D10^2   : 2.26572E-02  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         422.91 using 59 PHA bins.
    # Reduced chi-squared =         7.4195 for     57 degrees of freedom 
    # Null hypothesis probability =   2.576337e-57
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.118e-07   9.984e-09
    25- 50  1.156e-06   3.840e-08
    50-150  4.659e-06   1.469e-07
    15-150  6.026e-06   1.550e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (      )
    Norm        : 3.41950       (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         473.64 using 59 PHA bins.
    # Reduced chi-squared =         8.3095 for     57 degrees of freedom 
    # Null hypothesis probability =   5.509208e-67
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.174e-07   1.992e-08
    25- 50  1.572e-06   3.696e-08
    50-150  3.449e-06   8.736e-08
    15-150  5.839e-06   1.517e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 8.88356        (-0.84889      0.92639)
    R1^2/D10^2  : 0.283702        (-0.0742064      0.107777)
    kT2 [keV]   : 38.4631        (-3.49882      4.74872)
    R2^2/D10^2  : 4.08944E-03    (-0.001206   0.00142002)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.20 using 59 PHA bins.
    # Reduced chi-squared =         0.9855 for     55 degrees of freedom 
    # Null hypothesis probability =   5.051235e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.927e-07   4.061e-08
    25- 50  1.385e-06   7.104e-08
    50-150  5.044e-06   2.674e-07
    15-150  6.922e-06   3.120e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    7.884 sec. to    8.884 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.47519     ( -0.484478   0.477425 )
    Norm@50keV  : 4.27814E-03    ( -0.00120308   0.0011806 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.67 using 59 PHA bins.
    # Reduced chi-squared =          1.187 for     57 degrees of freedom 
    # Null hypothesis probability =   1.576194e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.530597 ( -0.14437  0.144683 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.07543e-08 ( -1.2332e-08  1.271e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    7.884 sec. to    8.884 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.48422     ( -0.898549   0.471783 )
    Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
    Norm@50keV  : 4.26806E-03    ( -0.00120795   0.0162364 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.67 using 59 PHA bins.
    # Reduced chi-squared =          1.208 for     56 degrees of freedom 
    # Null hypothesis probability =   1.364705e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.531297 ( -0.145242  0.143471 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.04982e-08 ( -1.359e-08  1.28051e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    7.884 sec. to    8.884 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.90967   ( -4.90967   -4.90967 )
    beta        : -2.09582    ( -2.94786   0.80872 )
    Epeak [keV] : 33.8877      ( -33.8877 9.93743 )
    Norm@50keV   : 71.7039    ( -18.7914   2.55947e+06 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.90 using 59 PHA bins.
    # Reduced chi-squared =          1.198 for     55 degrees of freedom 
    # Null hypothesis probability =   1.491817e-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]    : 10.6717  (-2.50387  4.12154)
    R^2/D10^2   : 0.205365  (-0.144913   0.348254)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          69.53 using 59 PHA bins.
    # Reduced chi-squared =          1.220 for     57 degrees of freedom 
    # Null hypothesis probability =   1.233799e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.854e-09   2.809e-09
    25- 50  1.319e-08   7.220e-09
    50-150  8.287e-09   5.421e-09
    15-150  2.633e-08   1.271e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-199.363      -199.363)
    Norm        : 2.17382       (-0.58465     0.585052)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          67.88 using 59 PHA bins.
    # Reduced chi-squared =          1.191 for     57 degrees of freedom 
    # Null hypothesis probability =   1.533705e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.413e-09   3.304e-09
    25- 50  1.041e-08   6.305e-09
    50-150  2.284e-08   1.386e-08
    15-150  3.866e-08   2.352e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 199.363        (-199.363      -199.363)
    R1^2/D10^2  : 8.11927E-05        (-4.56645e-05      0.00191148)
    kT2 [keV]   : 8.95545        (-2.07472      2.37511)
    R2^2/D10^2  : 0.344401    (-0.224854   0.55101)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.18 using 59 PHA bins.
    # Reduced chi-squared =          1.131 for     55 degrees of freedom 
    # Null hypothesis probability =   2.357554e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.468e-09   3.268e-09
    25- 50  1.219e-08   7.400e-09
    50-150  2.575e-08   5.745e-09
    15-150  4.341e-08   1.759e-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: 1.30451     ( -0.0460613   0.0459512 )
    Norm@50keV  : 2.34778E-02    ( -0.000592542   0.000592443 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          81.96 using 59 PHA bins.
    # Reduced chi-squared =          1.438 for     57 degrees of freedom 
    # Null hypothesis probability =   1.682273e-02
     
    Photon flux (15-150 keV)    in 9.101 sec: 2.80330 ( -0.0764402  0.0765849 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.10916e-06 ( -5.63995e-08  5.64408e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.03804     ( -0.191699   0.183788 )
    Epeak [keV] : 203.500      ( -61.7322 297.375 )
    Norm@50keV  : 3.09451E-02    ( -0.00524398   0.00660183 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          75.74 using 59 PHA bins.
    # Reduced chi-squared =          1.353 for     56 degrees of freedom 
    # Null hypothesis probability =   4.057154e-02
     
    Photon flux (15-150 keV)    in 9.101 sec: 2.75807 ( -0.08181  0.08201 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.07893e-06 ( -6.08857e-08  6.06491e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.119972   ( -0.801711   1.45382 )
    beta        : -1.41374    ( -0.112949   0.0757557 )
    Epeak [keV] : 60.1980      ( -20.5431 77.081 )
    Norm@50keV   : 0.114015    ( -0.118176   1.08393 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          69.89 using 59 PHA bins.
    # Reduced chi-squared =          1.271 for     55 degrees of freedom 
    # Null hypothesis probability =   8.521078e-02
     
    Photon flux (15-150 keV)    in 9.101 sec:  (    ) 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)  = 1.34e-06
    S(50-100 keV) = 2.54e-06
    

    T90 vs. Hardness ratio plot

    T90                                   = 48 sec.
    Hardness ratio (energy fluence ratio) = 1.89552
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.73071
    Count Ratio (50-100 keV) / (15-25 keV) = 1.75457
    

    Mask shadow pattern

    IMX = -3.272700866210436E-01, IMY = -8.643914241720100E-03
    

    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:
    -103.315400 0.384000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6304  22.0158    0.3   8.5   12.6   4.3327  38.0    0.2	Crab                          
     68.6547 -44.6062    3.3  59.5 -161.8   3.2238   3.5 ------	UNKNOWN                       
     51.3359 -21.9913    3.3  47.0 -132.0   1.5475   3.5 ------	UNKNOWN                       
     45.1920  -7.1970    2.8  42.6 -110.2   2.3842   4.1 ------	UNKNOWN                       
    

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

    Time interval of the image:
    0.384000 9.484590
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.7768  22.1579   10.9   8.7   13.4   0.0526   1.1   11.7	Crab                          
    122.9643  49.2071    2.3  48.6   41.0   1.2334   5.0 ------	UNKNOWN                       
     85.2364  -4.4021    0.2  18.1  178.5   3.2946  67.2 ------	UNKNOWN                       
     44.7185  -4.6296    3.9  41.8 -106.5   0.6448   3.0 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    80.084610 482.514000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6331  22.0206    0.4  26.5   62.6   4.9960  26.4    0.4	Crab                          
    135.5324 -40.4585   14.8  57.7 -158.0   0.6627   0.8    5.8	Vela X-1                      
     59.0670  26.1047    2.6  39.7   27.5   1.0956   4.5 ------	UNKNOWN                       
     85.2232  -4.4356    2.2   0.0  152.3   0.7006   5.2 ------	UNKNOWN                       
     86.1908 -33.9631    2.7  29.5 -115.8   0.7861   4.3 ------	UNKNOWN                       
    136.5798 -42.4884    3.3  59.3 -156.3   3.6787   3.5 ------	UNKNOWN                       
     47.5324 -30.0658    3.3  43.8  -64.3   2.5834   3.5 ------	UNKNOWN                       
    
    Plot creation:
    Tue Jun  9 23:53:54 EDT 2015