batgrbproduct analysis for trigger=835200

batgrbproduct Analysis for Trigger=835200

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jul  6 12:19:21 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger835200
======================================================================

  Trigger: 00835200      Segment: 000

  BAT Trigger Time: 549620112   [s; MET]
      Trigger Stop: 549620176   [s; MET]
               UTC: 2018-06-02T08:14:50.959800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 142.33930428647   Dec: 32.0927735904  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.3
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.3

  Flight Position:   [ source = BAT ]
    RA: 142.33930428647   Dec: 32.0927735904  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 142.3379578901   Dec: 32.0834759326783  [deg; J2000]  
        { 09h 29m 21.1s , +32d 05' 00.5" }
         +/- 1.48586983770063 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.59414834067352 [arcmin] (formal 1-sigma fit error)
    SNR: 17.2755375622003
 
  Angular difference between Flight and Ground position is 0.562042 arcmin
 
  Partial Coding Fraction: 0.7890625    [ including projection effects ]

  Duration
     T90: 53.203999876976 +/- 10.1974963735852
        Measured from: -32.3999999761581
                   to: 20.8039999008179     [s; relative to TRIGTIME]
     T50: 17.6000000238419 +/- 3.31492139140463
        Measured from: -22.37600004673
                   to: -4.77600002288818     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -19.5720000267029     
                   to: -18.5720000267029     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -39.3719999790192     
                   to: 30.2480000257492     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.928571   1.221477   0.693962   0.140133
           0.058479   0.061097   0.053935   0.047623 [error]
 Peak      0.023619   0.048572   0.039095   0.009362
           0.007248   0.007989   0.006664   0.005669 [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 2.92e-07 4.71e-07 5.75e-07 1.38e-06 1.73e-06 2.72e-06   erg/cm2
              Error 2.88e-08 2.90e-08 5.32e-08 2.66e-07 1.24e-07 3.13e-07   erg/cm2
Peak flux Power-law 2.64e-01 3.08e-01 2.59e-01 3.67e-01 9.62e-01 1.20e+00   ph/cm2/s
              Error 8.59e-02 6.25e-02 5.28e-02 1.56e-01 1.74e-01 2.20e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.76e-07 4.93e-07 5.77e-07 7.03e-07 1.66e-06 2.05e-06   erg/cm2
              Error 3.31e-08 3.73e-08 5.67e-08 5.33e-07 1.45e-07 5.57e-07   erg/cm2
Peak flux Cutoff-PL 2.45e-01 3.20e-01 2.69e-01 2.35e-01 9.50e-01 1.07e+00   ph/cm2/s
              Error 9.95e-02 7.40e-02 6.16e-02 2.07e-01 1.78e-01 2.69e-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    1.713    0.114    -      -           2.69e-03 1.82e-04   45.030 57
CPL   1.299    0.468      77.6  -28.1      4.49e-03 2.80e-03   42.470 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.252    0.299    -      -           8.13e-03 1.43e-03   49.940 57
CPL   0.855    1.333     149.1    0.0      1.28e-02 3.05e-02   49.600 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: 23.104000 sec.
T50 in the 50-300 keV band: 12.480000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   69.620  -39.372   30.248
T90    53.204  -32.400   20.804
T50    17.600  -22.376   -4.776
Peak    1.000  -19.572  -18.572
  • Click here for the BAT GCN circular template
  • Special notes of this burst
  • 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
      142.3380    32.0835   0.0111    19.7070   128.2339         1.7815435     17.276 TRIG_00835200                 
     
    Foreground time interval of the image:
    -16.899  30.248 (delta_t =  47.147 [sec])
    Background time interval of the image:
    

    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)

    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  -39.372 sec. to   30.248 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.71289     ( -0.11251   0.114494 )
    Norm@50keV  : 2.68875E-03    ( -0.000182443   0.000180759 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          45.03 using 59 PHA bins.
    # Reduced chi-squared =         0.7900 for     57 degrees of freedom 
    # Null hypothesis probability =   8.742984e-01
     
    Photon flux (15-150 keV)    in 69.62 sec: 0.358734 ( -0.022183  0.022202 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.73171e-06 ( -1.23048e-07  1.24404e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -39.372 sec. to   30.248 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.29883     ( -0.495599   0.440629 )
    Epeak [keV] : 77.6052      ( -21.3341 -77.6052 )
    Norm@50keV  : 4.49068E-03    ( -0.00184179   0.00374889 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          42.47 using 59 PHA bins.
    # Reduced chi-squared =         0.7585 for     56 degrees of freedom 
    # Null hypothesis probability =   9.089224e-01
     
    Photon flux (15-150 keV)    in 69.62 sec: 0.351080 ( -0.0236  0.023588 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.65872e-06 ( -1.44661e-07  1.45722e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -39.372 sec. to   30.248 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]    : 11.9825  (-0.918288  1.01563)
    R^2/D10^2   : 8.58948E-02  (-0.0222155   0.0293974)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          93.42 using 59 PHA bins.
    # Reduced chi-squared =          1.639 for     57 degrees of freedom 
    # Null hypothesis probability =   1.677259e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.816e-07   2.022e-08
    25- 50  5.705e-07   3.902e-08
    50-150  4.920e-07   7.049e-08
    15-150  1.244e-06   8.389e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 126.052       (-31.316      44.3646)
    Norm        : 1.49999       (-0.113026     0.141467)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          42.47 using 59 PHA bins.
    # Reduced chi-squared =         0.7451 for     57 degrees of freedom 
    # Null hypothesis probability =   9.241403e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.714e-07   2.618e-08
    25- 50  4.896e-07   4.428e-08
    50-150  8.948e-07   3.090e-07
    15-150  1.656e-06   3.411e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.29052        (-1.20065      1.24437)
    R1^2/D10^2  : 0.374859        (-0.149318      0.30276)
    kT2 [keV]   : 26.1638        (-5.75824      10.664)
    R2^2/D10^2  : 3.56464E-03    (-0.00245168   0.00559183)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          39.97 using 59 PHA bins.
    # Reduced chi-squared =         0.7267 for     55 degrees of freedom 
    # Null hypothesis probability =   9.363121e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.608e-07   5.326e-08
    25- 50  5.104e-07   1.124e-07
    50-150  9.072e-07   4.324e-07
    15-150  1.678e-06   4.908e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from  -19.572 sec. to  -18.572 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.25175     ( -0.302843   0.294277 )
    Norm@50keV  : 8.12887E-03    ( -0.00143247   0.00143195 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.94 using 59 PHA bins.
    # Reduced chi-squared =         0.8761 for     57 degrees of freedom 
    # Null hypothesis probability =   7.348818e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.961707 ( -0.174208  0.174663 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 8.13242e-08 ( -1.5684e-08  1.58453e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -19.572 sec. to  -18.572 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.854801     ( -1.47672   1.18983 )
    Epeak [keV] : 149.098      ( -149.167 -149.167 )
    Norm@50keV  : 1.28105E-02    ( -0.00596966   0.0549788 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.60 using 59 PHA bins.
    # Reduced chi-squared =         0.8856 for     56 degrees of freedom 
    # Null hypothesis probability =   7.143947e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.949796 ( -0.178585  0.178094 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.92228e-08 ( -1.74368e-08  1.69406e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from  -19.572 sec. to  -18.572 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]    : 16.6818  (-3.45584  4.96152)
    R^2/D10^2   : 8.04902E-02  (-0.0472156   0.0987587)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.10 using 59 PHA bins.
    # Reduced chi-squared =         0.9667 for     57 degrees of freedom 
    # Null hypothesis probability =   5.467097e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.585e-09   1.780e-09
    25- 50  1.998e-08   6.460e-09
    50-150  3.945e-08   1.423e-08
    15-150  6.401e-08   1.890e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-67.2248      -200)
    Norm        : 3.99717       (-0.714121     0.714121)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.35 using 59 PHA bins.
    # Reduced chi-squared =         0.9184 for     57 degrees of freedom 
    # Null hypothesis probability =   6.500079e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.957e-09   5.660e-09
    25- 50  1.915e-08   1.094e-08
    50-150  4.201e-08   2.398e-08
    15-150  7.112e-08   4.019e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 11.2055        (-5.40622      4.45832)
    R1^2/D10^2  : 0.239544        (-0.157052      1.17619)
    kT2 [keV]   : 64.0792        (-58.2801      -64.0795)
    R2^2/D10^2  : 9.41190E-04    (-0.000773042   0.00985519)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.55 using 59 PHA bins.
    # Reduced chi-squared =         0.8827 for     55 degrees of freedom 
    # Null hypothesis probability =   7.179079e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.652e-09   3.965e-09
    25- 50  2.088e-08   1.169e-08
    50-150  5.278e-08   2.595e-08
    15-150  8.031e-08   3.918e-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: 1.82413     ( -0.160704   0.166445 )
    Norm@50keV  : 2.17254E-03    ( -0.000224271   0.000220126 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          45.82 using 59 PHA bins.
    # Reduced chi-squared =         0.8039 for     57 degrees of freedom 
    # Null hypothesis probability =   8.555525e-01
     
    Photon flux (15-150 keV)    in 47.15 sec: 0.302217 ( -0.0259805  0.025989 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.4234e-07 ( -9.75236e-08  9.9263e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.56580     ( -0.70793   0.618556 )
    Epeak [keV] : 73.3099      ( -65.5426 -73.3106 )
    Norm@50keV  : 3.03284E-03    ( -0.00105969   0.0044904 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          45.32 using 59 PHA bins.
    # Reduced chi-squared =         0.8093 for     56 degrees of freedom 
    # Null hypothesis probability =   8.454698e-01
     
    Photon flux (15-150 keV)    in 47.15 sec: 0.298555 ( -0.027389  0.02676 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.15365e-07 ( -1.16135e-07  1.16503e-07 ) 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)  = 4.71e-07
    S(50-100 keV) = 5.75e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 53.203999876976 sec.
    Hardness ratio (energy fluence ratio) = 1.22081
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.31544
    Count Ratio (50-100 keV) / (15-25 keV) = 0.747344
    

    Mask shadow pattern

    IMX = -2.216738482059665E-01, IMY = -2.813543010671655E-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:
     
    

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

    Time interval of the image:
    -16.899400 30.248000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6337  22.0170    1.6  40.2 -110.9   2.2950   7.1    0.2	Crab                          
    142.3380  32.0835    0.7  19.7  128.2   1.7816  17.3 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    113.500600 963.180000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    181.7411  12.8400    4.2  40.9   98.2   8.1291   2.7 ------	UNKNOWN                       
    191.1488  35.6529    2.9  40.3   60.4   8.1755   4.1 ------	UNKNOWN                       
    146.8506 -19.1950    3.0  51.5  163.8  11.2313   3.9 ------	UNKNOWN                       
    109.6449  81.4456    3.4  50.8  -16.6   4.8257   3.4 ------	UNKNOWN                       
    
    Plot creation:
    Fri Jul  6 14:42:56 EDT 2018