batgrbproduct analysis for trigger=865179

batgrbproduct Analysis for Trigger=865179

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Oct 19 17:58:03 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger865179
======================================================================

  Trigger: 00865179      Segment: 000

  BAT Trigger Time: 560236284.928   [s; MET]
      Trigger Stop: 560236289.024   [s; MET]
               UTC: 2018-10-03T05:11:03.236400    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 52.5688373282527   Dec: -34.0233528334788  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.68
     Image Trigger?:     NO
     Rate S/N Ratio:     8.24621125123532  [ if not an image trigger ]
     Image S/N Ratio:    7.68

  Flight Position:   [ source = BAT ]
    RA: 52.5688373282527   Dec: -34.0233528334788  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 52.4817343038973   Dec: -33.9907483281737  [deg; J2000]  
        { 03h 29m 55.6s , -33d 59' 26.7" }
         +/- 1.74807077043468 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.883354005220151 [arcmin] (formal 1-sigma fit error)
    SNR: 13.6963708637414
 
  Angular difference between Flight and Ground position is 4.753543 arcmin
 
  Partial Coding Fraction: 0.96875    [ including projection effects ]

  Duration
     T90: 25.4919999837875 +/- 4.76236281484229
        Measured from: -8.60000002384186
                   to: 16.8919999599457     [s; relative to TRIGTIME]
     T50: 10.5999999046326 +/- 3.67706407972848
        Measured from: -2.3199999332428
                   to: 8.27999997138977     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.86400008201599     
                   to: 2.86400008201599     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -11.1959999799728     
                   to: 18.0080000162125     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.230145   0.372503   0.206360  -0.004176
           0.032856   0.035212   0.031999   0.029946 [error]
 Peak      0.022280   0.030664   0.024810  -0.003140
           0.006019   0.006549   0.006072   0.005533 [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 7.04e-08 1.25e-07 1.71e-07 4.82e-07 4.93e-07 8.50e-07   erg/cm2
              Error 1.22e-08 1.48e-08 2.92e-08 1.65e-07 7.06e-08 1.94e-07   erg/cm2
Peak flux Power-law 2.18e-01 1.97e-01 1.23e-01 1.17e-01 5.87e-01 6.55e-01   ph/cm2/s
              Error 7.52e-02 4.80e-02 4.61e-02 8.49e-02 1.43e-01 1.70e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.75e-08 1.52e-07 1.69e-07 5.93e-08 4.26e-07 4.38e-07   erg/cm2
              Error 1.46e-08 2.12e-08 3.68e-08 7.22e-08 7.18e-08 9.96e-08   erg/cm2
Peak flux Cutoff-PL 1.92e-01 2.24e-01 1.27e-01 3.49e-02 5.70e-01 5.78e-01   ph/cm2/s
              Error 8.65e-02 6.40e-02 -------- 7.45e-02 1.44e-01 1.69e-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    1.550    0.194    -      -           1.80e-03 2.33e-04   58.610 57
CPL  -0.184    1.105      56.2   14.2      1.60e-02 3.75e-02   47.700 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.681    0.432    -      -           4.45e-03 1.29e-03   44.950 57
CPL   0.578    1.887      57.3    0.0      1.82e-02 1.57e-01   43.620 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: 16.832000 sec.
T50 in the 50-300 keV band: 5.696000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   29.204  -11.196   18.008
T90    25.492   -8.600   16.892
T50    10.600   -2.320    8.280
Peak    1.000    1.864    2.864
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
       52.4817   -33.9907   0.0141    12.1987    48.4752         0.9111584     13.696 TRIG_00865179                 
     
    Foreground time interval of the image:
    -11.196  18.008 (delta_t =  29.204 [sec])
    Background time interval of the image:
    -239.928 -11.196 (delta_t = 228.732 [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 4.096000
    

    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 4.096000
    

    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 4.096000
    

    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)

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from  -11.196 sec. to   18.008 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.55037     ( -0.191828   0.197043 )
    Norm@50keV  : 1.79729E-03    ( -0.000234263   0.000231611 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.61 using 59 PHA bins.
    # Reduced chi-squared =          1.028 for     57 degrees of freedom 
    # Null hypothesis probability =   4.161632e-01
     
    Photon flux (15-150 keV)    in 29.2 sec: 0.227557 ( -0.026891  0.026892 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.94108e-07 ( -6.98079e-08  7.13925e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -11.196 sec. to   18.008 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -0.184135     ( -1.2386   0.970846 )
    Epeak [keV] : 56.1921      ( -9.20013 19.1067 )
    Norm@50keV  : 1.60119E-02    ( -0.0160121   0.0590128 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.70 using 59 PHA bins.
    # Reduced chi-squared =         0.8518 for     56 degrees of freedom 
    # Null hypothesis probability =   7.772946e-01
     
    Photon flux (15-150 keV)    in 29.2 sec: 0.214686 ( -0.027334  0.027481 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.24866e-07 ( -6.8281e-08  7.52986e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from  -11.196 sec. to   18.008 sec.
     
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       :    (     )
    beta        :     (     )
    Epeak [keV] :       (   )
    Norm@50keV   :     (     )
    ------------------------------------------------------------
     
    Photon flux (15-150 keV)    in  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]    : 13.1021  (-1.56673  1.80952)
    R^2/D10^2   : 4.36666E-02  (-0.0161212   0.0249301)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.70 using 59 PHA bins.
    # Reduced chi-squared =         0.8894 for     57 degrees of freedom 
    # Null hypothesis probability =   7.090294e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.642e-08   1.002e-08
    25- 50  1.612e-07   2.495e-08
    50-150  1.758e-07   4.709e-08
    15-150  3.834e-07   5.665e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 164.041       (-68.8917      -162.561)
    Norm        : 0.945725       (-0.114163     0.135266)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.44 using 59 PHA bins.
    # Reduced chi-squared =         0.9551 for     57 degrees of freedom 
    # Null hypothesis probability =   5.717523e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.034e-08   3.854e-08
    25- 50  1.320e-07   7.122e-08
    50-150  2.701e-07   1.555e-07
    15-150  4.725e-07   2.577e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.62027        (-2.75678      40.8835)
    R1^2/D10^2  : 0.267497        (-0.248925      20.8167)
    kT2 [keV]   : 15.6851        (-3.09517      30.5438)
    R2^2/D10^2  : 1.98903E-02    (-0.0197733   0.0288745)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.32 using 59 PHA bins.
    # Reduced chi-squared =         0.8603 for     55 degrees of freedom 
    # Null hypothesis probability =   7.596442e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.933e-08   3.307e-08
    25- 50  1.483e-07   7.804e-08
    50-150  2.112e-07   1.203e-07
    15-150  4.188e-07   2.193e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    1.864 sec. to    2.864 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.68100     ( -0.408398   0.454853 )
    Norm@50keV  : 4.44692E-03    ( -0.00131783   0.00126382 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.95 using 59 PHA bins.
    # Reduced chi-squared =         0.7886 for     57 degrees of freedom 
    # Null hypothesis probability =   8.761726e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.586758 ( -0.143111  0.143155 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.12449e-08 ( -1.23966e-08  1.30901e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    1.864 sec. to    2.864 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.578199     ( -2.21404   1.55919 )
    Epeak [keV] : 57.3271      ( -57.3387 -57.3387 )
    Norm@50keV  : 1.82387E-02    ( -0.0182256   0.295304 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.62 using 59 PHA bins.
    # Reduced chi-squared =         0.7789 for     56 degrees of freedom 
    # Null hypothesis probability =   8.859190e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.569669 ( -0.142647  0.144377 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.76929e-08 ( -1.20085e-08  1.38406e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    1.864 sec. to    2.864 sec.
     
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       :    (     )
    beta        :     (     )
    Epeak [keV] :       (   )
    Norm@50keV   :     (     )
    ------------------------------------------------------------
     
    Photon flux (15-150 keV)    in  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]    : 12.5999  (-3.54215  4.4693)
    R^2/D10^2   : 0.125985  (-0.0829927   0.276651)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          46.11 using 59 PHA bins.
    # Reduced chi-squared =         0.8089 for     57 degrees of freedom 
    # Null hypothesis probability =   8.484796e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.241e-09   2.265e-09
    25- 50  1.411e-08   7.153e-09
    50-150  1.390e-08   7.861e-09
    15-150  3.226e-08   1.484e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 121.465       (-69.9266      -119.492)
    Norm        : 2.50615       (-0.660233     0.95754)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.10 using 59 PHA bins.
    # Reduced chi-squared =         0.7738 for     57 degrees of freedom 
    # Null hypothesis probability =   8.942511e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.524e-09   3.770e-09
    25- 50  1.170e-08   6.605e-09
    50-150  2.100e-08   1.450e-08
    15-150  3.922e-08   2.475e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.45452        (-5.29128      23.2717)
    R1^2/D10^2  : 1.32012        (-1.24761      -1.32193)
    kT2 [keV]   : 17.8156        (-11.8564      23.6669)
    R2^2/D10^2  : 2.89745E-02    (-0.0282259   0.0788248)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          42.90 using 59 PHA bins.
    # Reduced chi-squared =         0.7801 for     55 degrees of freedom 
    # Null hypothesis probability =   8.821630e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.338e-09   3.570e-09
    25- 50  1.209e-08   6.485e-09
    50-150  1.970e-08   1.204e-08
    15-150  3.813e-08   2.076e-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: 1.55037     ( -0.191828   0.197043 )
    Norm@50keV  : 1.79729E-03    ( -0.000234263   0.000231611 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.61 using 59 PHA bins.
    # Reduced chi-squared =          1.028 for     57 degrees of freedom 
    # Null hypothesis probability =   4.161632e-01
     
    Photon flux (15-150 keV)    in 29.2 sec: 0.227550 ( -0.02689  0.0268912 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.94046e-07 ( -6.97626e-08  7.14273e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -0.184143     ( -1.2386   0.970846 )
    Epeak [keV] : 56.1920      ( -9.20014 19.1067 )
    Norm@50keV  : 1.60121E-02    ( -0.0160121   0.0590128 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.70 using 59 PHA bins.
    # Reduced chi-squared =         0.8518 for     56 degrees of freedom 
    # Null hypothesis probability =   7.772946e-01
     
    Photon flux (15-150 keV)    in 29.2 sec: 0.214669 ( -0.027331  0.027474 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.24997e-07 ( -6.83806e-08  7.53652e-08 ) ergs/cm2
     
    
    Band function
     
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       :    (     )
    beta        :     (     )
    Epeak [keV] :       (   )
    Norm@50keV   :     (     )
    ------------------------------------------------------------
     
    Photon flux (15-150 keV)    in  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)  = 1.25e-07
    S(50-100 keV) = 1.71e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 25.4919999837875 sec.
    Hardness ratio (energy fluence ratio) = 1.368
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.61856
    Count Ratio (50-100 keV) / (15-25 keV) = 0.896652
    

    Mask shadow pattern

    IMX = 1.433178867959028E-01, IMY = -1.618503740141366E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    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:
    -239.928000 -11.196000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6361  22.0138    1.5  55.2  177.8   7.9667   7.8    0.2	Crab                          
     36.2195 -69.5128    2.6  42.5   -6.7   1.6379   4.4 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -11.196000 18.008000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.5997  21.9781    9.9  55.1  177.8  -0.3800  -1.2    2.9	Crab                          
     34.7568 -52.4455    2.0  31.7   15.6   0.4896   5.7 ------	UNKNOWN                       
     52.4817 -33.9908    0.8  12.2   48.5   0.9104  13.7 ------	UNKNOWN                       
    123.8360 -68.3125    2.0  49.9  -45.8   1.9973   5.8 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    178.372590 815.372590
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    112.1549  51.9046    4.4  35.2  105.4   2.6563   2.6 ------	UNKNOWN                       
    134.3593   1.4515    2.6  28.8  -11.5   2.1007   4.5 ------	UNKNOWN                       
    166.0013  21.1182    3.0  18.9 -111.2   2.0985   3.9 ------	UNKNOWN                       
    213.2945  45.6734    2.5  54.8 -165.6   6.4146   4.5 ------	UNKNOWN                       
    134.4419 -24.7700    2.2  53.8  -23.8   7.3882   5.3 ------	UNKNOWN                       
    158.6271 -17.7796    3.0  47.0  -53.3   9.4987   3.9 ------	UNKNOWN                       
    178.9031   1.2914    4.4  40.8  -92.5   5.7664   2.6 ------	UNKNOWN                       
    
    Plot creation:
    Fri Oct 26 12:19:00 EDT 2018