batgrbproduct Analysis for Trigger=642018

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun May 31 11:26:27 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger642018/GCN5_download_cron
======================================================================

  Trigger: 00642018      Segment: 000

  BAT Trigger Time: 454678951.872   [s; MET]
      Trigger Stop: 454678952.896   [s; MET]
               UTC: 2015-05-30T11:42:18.222320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 327.523415997874   Dec: 57.4904208320749  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.11
     Image Trigger?:     NO
     Rate S/N Ratio:     23.7697286480094  [ if not an image trigger ]
     Image S/N Ratio:    9.11

  Flight Position:   [ source = BAT ]
    RA: 327.523415997874   Dec: 57.4904208320749  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 327.509980956358   Dec: 57.519807597897  [deg; J2000]  
        { 21h 50m 02.4s , +57d 31' 11.3" }
         +/- 1.20127949845542 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.425485207209449 [arcmin] (formal 1-sigma fit error)
    SNR: 23.4067514696423
 
  Angular difference between Flight and Ground position is 1.815609 arcmin
 
  Partial Coding Fraction: 0.1757812    [ including projection effects ]

  Duration
     T90: 6.61999994516373 +/- 0.839437926650678
        Measured from: -3.56399983167648
                   to: 3.05600011348724     [s; relative to TRIGTIME]
     T50: 2.87199997901917 +/- 0.533441642597653
        Measured from: -1.31999987363815
                   to: 1.55200010538101     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.480000019073486     
                   to: 1.48000001907349     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.21999996900558     
                   to: 3.49200004339218     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.592223   0.932287   0.820764   0.231867
           0.052108   0.058231   0.051489   0.038988 [error]
 Peak      0.095579   0.156913   0.160275   0.076579
           0.018648   0.022917   0.020897   0.016197 [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 2.38e-07 4.38e-07 6.21e-07 1.85e-06 1.77e-06 3.15e-06   erg/cm2
              Error 2.79e-08 3.16e-08 4.96e-08 3.17e-07 1.23e-07 3.52e-07   erg/cm2
Peak flux Power-law 1.12e+00 1.31e+00 1.11e+00 1.60e+00 4.12e+00 5.14e+00   ph/cm2/s
              Error 2.97e-01 2.14e-01 1.65e-01 5.03e-01 5.84e-01 7.01e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.17e-07 4.55e-07 6.49e-07 1.08e-06 1.74e-06 2.40e-06   erg/cm2
              Error 3.39e-08 3.68e-08 5.81e-08 5.90e-07 1.29e-07 5.94e-07   erg/cm2
Peak flux Cutoff-PL 1.13e+00 1.32e+00 1.11e+00 1.57e+00 4.13e+00 5.14e+00   ph/cm2/s
              Error 3.04e-01 2.17e-01 1.75e-01 6.75e-01 7.30e-01 8.43e-01   ph/cm2/s
 
Fluence        Band 2.15e-07 4.53e-07 6.48e-07 1.10e-06 1.74e-06 2.43e-06   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    1.496    0.110    -      -           2.42e-02 1.59e-03   67.960 57
CPL   1.062    0.453     116.9  459.0      3.90e-02 2.00e-02   64.990 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.240    0.231    -      -           3.49e-02 4.67e-03   41.810 57
CPL   1.236    1.627    10000.0    0.0      3.50e-02 0.00e+00   41.820 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: 7.296000 sec.
T50 in the 50-300 keV band: 2.752000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    7.712   -4.220    3.492
T90     6.620   -3.564    3.056
T50     2.872   -1.320    1.552
Peak    1.000    0.480    1.480

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  327.5100 +57.5198 0.0083   48.4  166.0       2.8370    23.4  TRIG_00642018       
------------------------------------------
 
Foreground time interval of the image:
 -4.220   3.492 (delta_t =   7.712 [sec])
Background time interval of the image:
-239.872  -4.220 (delta_t = 235.652 [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)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from   -4.220 sec. to    3.492 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49604     ( -0.110261   0.110541 )
Norm@50keV  : 2.42193E-02    ( -0.00159016   0.00158891 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.96 using 59 PHA bins.
# Reduced chi-squared =          1.192 for     57 degrees of freedom 
# Null hypothesis probability =   1.517565e-01
 
Photon flux (15-150 keV)    in 7.712 sec: 3.02031 ( -0.210076  0.210611 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.77303e-06 ( -1.23142e-07  1.23413e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.220 sec. to    3.492 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06228     ( -0.47614   0.429601 )
Epeak [keV] : 116.907      ( -35.7464 882.264 )
Norm@50keV  : 3.89557E-02    ( -0.014314   0.0256349 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.99 using 59 PHA bins.
# Reduced chi-squared =          1.160 for     56 degrees of freedom 
# Null hypothesis probability =   1.922238e-01
 
Photon flux (15-150 keV)    in 7.712 sec: 2.96438 ( -0.21711  0.21756 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74232e-06 ( -1.2906e-07  1.28436e-07 ) ergs/cm2
 
Band function
Time interval is from   -4.220 sec. to    3.492 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06327   ( -0.330483   0.409018 )
beta        : -9.37165    ( 9.37167   19.3717 )
Epeak [keV] : 118.378      ( -27.6044 1392.4 )
Norm@50keV   : 3.87386E-02    ( -0.0098658   0.0121646 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.99 using 59 PHA bins.
# Reduced chi-squared =          1.182 for     55 degrees of freedom 
# Null hypothesis probability =   1.677661e-01
 
Photon flux (15-150 keV)    in 7.712 sec: 2.98089 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74115e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 16.4666  (-1.32023  1.45738)
R^2/D10^2   : 0.250177  (-0.0652545   0.0867284)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         113.04 using 59 PHA bins.
# Reduced chi-squared =         1.9832 for     57 degrees of freedom 
# Null hypothesis probability =   1.435791e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.074e-07   1.427e-08
25- 50  4.632e-07   4.388e-08
50-150  8.871e-07   1.021e-07
15-150  1.458e-06   1.037e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 12.4426       (-0.817923     0.817932)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.77 using 59 PHA bins.
# Reduced chi-squared =          1.171 for     57 degrees of freedom 
# Null hypothesis probability =   1.763567e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.400e-07   1.886e-08
25- 50  4.616e-07   3.760e-08
50-150  1.012e-06   1.917e-07
15-150  1.714e-06   2.236e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.21110        (-1.79785      2.14308)
R1^2/D10^2  : 2.61064        (-1.4564      4.57415)
kT2 [keV]   : 25.9054        (-4.4565      8.19754)
R2^2/D10^2  : 4.07696E-02    (-0.026153   0.0438852)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.17 using 59 PHA bins.
# Reduced chi-squared =          1.203 for     55 degrees of freedom 
# Null hypothesis probability =   1.439335e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.092e-07   7.207e-08
25- 50  4.588e-07   1.138e-07
50-150  1.074e-06   3.085e-07
15-150  1.742e-06   4.346e-07

Peak spectrum fit

Power-law model
Time interval is from    0.480 sec. to    1.480 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23995     ( -0.23394   0.228528 )
Norm@50keV  : 3.48718E-02    ( -0.00467323   0.00466692 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.81 using 59 PHA bins.
# Reduced chi-squared =         0.7336 for     57 degrees of freedom 
# Null hypothesis probability =   9.343167e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.11775 ( -0.583066  0.585311 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.49927e-07 ( -4.96435e-08  4.98283e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.480 sec. to    1.480 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23581     ( -0.410528   2.84448 )
Epeak [keV] : 1.00000E+04      (   )
Norm@50keV  : 3.50330E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.82 using 59 PHA bins.
# Reduced chi-squared =         0.7468 for     56 degrees of freedom 
# Null hypothesis probability =   9.205257e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.12724 ( -0.88558  0.57467 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.49279e-07 ( -4.8977e-08  5.0331e-08 ) ergs/cm2
 
Band function
Time interval is from    0.480 sec. to    1.480 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.75516   ( -4.75516   -4.75516 )
beta        : -1.36161    ( -0.163243   0.275424 )
Epeak [keV] : 30.0463      ( -30.0463 6.95377 )
Norm@50keV   : 686.148    ( -91.2244   1.15236e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.90 using 59 PHA bins.
# Reduced chi-squared =         0.7436 for     55 degrees of freedom 
# Null hypothesis probability =   9.214836e-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]    : 18.7034  (-3.654  5.16173)
R^2/D10^2   : 0.229873  (-0.22709   0.251175)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.90 using 59 PHA bins.
# Reduced chi-squared =          1.068 for     57 degrees of freedom 
# Null hypothesis probability =   3.375110e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.590e-08   4.636e-09
25- 50  7.560e-08   1.899e-08
50-150  1.937e-07   5.050e-08
15-150  2.852e-07   5.750e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 17.3507       (-2.36361     2.36316)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.98 using 59 PHA bins.
# Reduced chi-squared =         0.8417 for     57 degrees of freedom 
# Null hypothesis probability =   7.970253e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.323e-08   2.452e-08
25- 50  8.316e-08   4.678e-08
50-150  1.824e-07   1.014e-07
15-150  3.088e-07   1.718e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.37693        (-2.70995      3.33237)
R1^2/D10^2  : 1.72816        (-1.07595      3.48614)
kT2 [keV]   : 52.9706        (-22.7194      -52.971)
R2^2/D10^2  : 7.59816E-03    (-0.00667125   0.0318585)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.81 using 59 PHA bins.
# Reduced chi-squared =         0.7238 for     55 degrees of freedom 
# Null hypothesis probability =   9.385779e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.240e-08   1.794e-08
25- 50  8.458e-08   4.175e-08
50-150  2.397e-07   1.271e-07
15-150  3.566e-07   1.689e-07
Plot creation:
Sun May 31 11:30:24 EDT 2015