batgrbproduct Analysis for Trigger=651882

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Aug 12 00:57:02 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger651882/GCN5_download_cron
======================================================================

  Trigger: 00651882      Segment: 000

  BAT Trigger Time: 460958784   [s; MET]
      Trigger Stop: 460958848   [s; MET]
               UTC: 2015-08-11T04:06:09.022920    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 291.370844486993   Dec: -15.4381283909325  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.67
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    10.67

  Flight Position:   [ source = BAT ]
    RA: 291.370844486993   Dec: -15.4381283909325  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 291.346018350367   Dec: -15.4341597330967  [deg; J2000]  
        { 19h 25m 23.0s , -15d 26' 03.0" }
         +/- 1.94730594571653 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.91704308024037 [arcmin] (formal 1-sigma fit error)
    SNR: 11.7392666069645
 
  Angular difference between Flight and Ground position is 1.455447 arcmin
 
  Partial Coding Fraction: 0.6796875    [ including projection effects ]

  Duration
     T90: 34.0160000324249 +/- 6.2692442926943
        Measured from: 2.72800010442734
                   to: 36.7440001368523     [s; relative to TRIGTIME]
     T50: 16.960000038147 +/- 4.3112504356342
        Measured from: 6.90400010347366
                   to: 23.8640001416206     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.58799999952316     
                   to: 7.58799999952316     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 1.5120000243187     
                   to: 40.3600000143051     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.406667   0.353753   0.175320   0.043353
           0.044412   0.043499   0.035997   0.030230 [error]
 Peak      0.027429   0.022248   0.016818  -0.000057
           0.007463   0.007319   0.005762   0.004865 [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 1.21e-07 1.51e-07 1.38e-07 2.18e-07 4.84e-07 6.28e-07   erg/cm2
              Error 2.20e-08 2.06e-08 3.46e-08 1.07e-07 7.89e-08 1.48e-07   erg/cm2
Peak flux Power-law 2.46e-01 1.81e-01 8.85e-02 6.14e-02 5.45e-01 5.77e-01   ph/cm2/s
              Error 1.07e-01 5.78e-02 4.57e-02 7.06e-02 1.74e-01 1.85e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.20e-07 1.55e-07 1.36e-07 1.51e-07 4.75e-07 5.62e-07   erg/cm2
              Error 2.34e-08 2.56e-08 3.75e-08 1.69e-07 8.79e-08 1.90e-07   erg/cm2
Peak flux Cutoff-PL 2.38e-01 1.95e-01 8.69e-02 2.80e-02 5.38e-01 5.47e-01   ph/cm2/s
              Error 1.13e-01 7.53e-02 6.90e-02 6.80e-02 1.74e-01 1.91e-01   ph/cm2/s
 
Fluence        Band 1.19e-07 1.54e-07 1.34e-07 2.01e-07 4.79e-07 6.10e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.43e-01 1.86e-01 8.88e-02 4.65e-02 5.43e-01 5.64e-01   ph/cm2/s
              Error -------- -------- -------- -------- 1.74e-01 1.94e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.137    0.267    -      -           1.34e-03 2.44e-04   57.020 57
CPL   1.950    0.589      11.0   -0.5      1.72e-03 0.00e+00   56.910 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.033    0.595    -      -           3.58e-03 1.44e-03   53.750 57
CPL   1.489    2.155      37.7    0.0      7.59e-03 0.00e+00   53.520 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   38.848    1.512   40.360
T90    34.016    2.728   36.744
T50    16.960    6.904   23.864
Peak    1.000    6.588    7.588

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  291.3460 -15.4342 0.0163   26.5  148.3       1.0326    11.7  TRIG_00651882       
------------------------------------------
 
Foreground time interval of the image:
  1.512  40.360 (delta_t =  38.848 [sec])
Background time interval of the image:
-239.000   1.512 (delta_t = 240.512 [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    1.512 sec. to   40.360 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.13661     ( -0.255518   0.277959 )
Norm@50keV  : 1.33707E-03    ( -0.000247697   0.000239637 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.02 using 59 PHA bins.
# Reduced chi-squared =          1.000 for     57 degrees of freedom 
# Null hypothesis probability =   4.742756e-01
 
Photon flux (15-150 keV)    in 38.85 sec: 0.214238 ( -0.0283078  0.0283132 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.84479e-07 ( -7.77245e-08  8.00193e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.512 sec. to   40.360 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94958     ( -1.09359   0.0850657 )
Epeak [keV] : 10.9655      ( -9.73533 -10.7274 )
Norm@50keV  : 1.72436E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.91 using 59 PHA bins.
# Reduced chi-squared =          1.016 for     56 degrees of freedom 
# Null hypothesis probability =   4.410860e-01
 
Photon flux (15-150 keV)    in 38.85 sec: 0.212812 ( -0.0291  0.029069 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.75287e-07 ( -8.84113e-08  8.73426e-08 ) ergs/cm2
 
Band function
Time interval is from    1.512 sec. to   40.360 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.95138   ( -4.1554   0.116495 )
beta        : -10.00000    ( 10   20 )
Epeak [keV] : 10.6685      ( -6.46679 -10.6685 )
Norm@50keV   : 1.71978E-03    ( -0.000226761   0.00184343 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.91 using 59 PHA bins.
# Reduced chi-squared =          1.035 for     55 degrees of freedom 
# Null hypothesis probability =   4.039205e-01
 
Photon flux (15-150 keV)    in 38.85 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.78683e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.78411  (-1.44197  1.72673)
R^2/D10^2   : 0.158730  (-0.0800676   0.164748)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.37 using 59 PHA bins.
# Reduced chi-squared =          1.270 for     57 degrees of freedom 
# Null hypothesis probability =   8.243727e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.144e-08   2.181e-08
25- 50  1.870e-07   3.854e-08
50-150  6.620e-08   2.553e-08
15-150  3.447e-07   6.603e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 53.7600       (-17.4397      31.963)
Norm        : 1.16277       (-0.248892     0.349954)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.94 using 59 PHA bins.
# Reduced chi-squared =          1.016 for     57 degrees of freedom 
# Null hypothesis probability =   4.404335e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.122e-07   1.933e-08
25- 50  1.652e-07   2.787e-08
50-150  1.715e-07   6.346e-08
15-150  4.489e-07   8.199e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.90649        (-1.56445      1.90049)
R1^2/D10^2  : 1.20115        (-0.854866      5.08968)
kT2 [keV]   : 18.0275        (-5.81705      13.5242)
R2^2/D10^2  : 6.96805E-03    (-0.00612198   0.0278772)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.80 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     55 degrees of freedom 
# Null hypothesis probability =   4.076473e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.228e-07   6.667e-08
25- 50  1.471e-07   7.554e-08
50-150  1.948e-07   1.121e-07
15-150  4.646e-07   2.440e-07

Peak spectrum fit

Power-law model
Time interval is from    6.588 sec. to    7.588 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.03277     ( -0.550894   0.639168 )
Norm@50keV  : 3.57624E-03    ( -0.00147893   0.00140351 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.75 using 59 PHA bins.
# Reduced chi-squared =         0.9430 for     57 degrees of freedom 
# Null hypothesis probability =   5.976747e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.544682 ( -0.173646  0.173723 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.30444e-08 ( -1.21586e-08  1.28209e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.588 sec. to    7.588 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48890     ( -3.6747   0.635547 )
Epeak [keV] : 37.6591      (   )
Norm@50keV  : 7.58834E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.52 using 59 PHA bins.
# Reduced chi-squared =         0.9557 for     56 degrees of freedom 
# Null hypothesis probability =   5.693352e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.538358 ( -0.174228  0.174028 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13364e-08 ( -1.2817e-08  1.39593e-08 ) ergs/cm2
 
Band function
Time interval is from    6.588 sec. to    7.588 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.91081   ( -7.10743   -4.91081 )
beta        : -2.39197    ( -1.75224   0.742278 )
Epeak [keV] : 23.9267      ( -23.9267 8.53942 )
Norm@50keV   : 756.531    ( -234.634   7.19965e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.33 using 59 PHA bins.
# Reduced chi-squared =         0.9515 for     55 degrees of freedom 
# Null hypothesis probability =   5.771695e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.543433 0.537728 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.15149e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.37296  (-2.9035  5.12886)
R^2/D10^2   : 0.506970  (-0.502184   2.25743)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.91 using 59 PHA bins.
# Reduced chi-squared =         0.9808 for     57 degrees of freedom 
# Null hypothesis probability =   5.160858e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.634e-09   4.109e-09
25- 50  1.255e-08   8.245e-09
50-150  3.819e-09   2.956e-09
15-150  2.300e-08   1.438e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 60.4263       (-35.3279      -60.4263)
Norm        : 2.87449       (-1.22059     2.35428)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.53 using 59 PHA bins.
# Reduced chi-squared =         0.9391 for     57 degrees of freedom 
# Null hypothesis probability =   6.061995e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.233e-09   3.704e-09
25- 50  1.103e-08   6.695e-09
50-150  1.263e-08   9.970e-09
15-150  3.089e-08   2.073e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.60119        (-2.50388      3.81025)
R1^2/D10^2  : 1.94810        (-1.67501      17.6289)
kT2 [keV]   : 21.8992        (-11.7953      -21.8924)
R2^2/D10^2  : 8.47518E-03    (-0.00836911   0.276096)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.43 using 59 PHA bins.
# Reduced chi-squared =         0.9532 for     55 degrees of freedom 
# Null hypothesis probability =   5.735973e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.061e-09   4.988e-09
25- 50  1.023e-08   5.805e-09
50-150  1.467e-08   1.007e-08
15-150  3.295e-08   1.737e-08
Plot creation:
Wed Aug 12 01:01:47 EDT 2015