batgrbproduct Analysis for Trigger=657750

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Oct  7 09:09:22 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger657750
======================================================================

  Trigger: 00657750      Segment: 000

  BAT Trigger Time: 465818117.12   [s; MET]
      Trigger Stop: 465818118.144   [s; MET]
               UTC: 2015-10-06T09:55:01.886520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 147.451471925599   Dec: 70.5086429872937  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    16.58
     Image Trigger?:     NO
     Rate S/N Ratio:     47.1911008559877  [ if not an image trigger ]
     Image S/N Ratio:    16.58

  Flight Position:   [ source = BAT ]
    RA: 147.451471925599   Dec: 70.5086429872937  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 147.42611563476   Dec: 70.5083980175362  [deg; J2000]  
        { 09h 49m 42.3s , +70d 30' 30.2" }
         +/- 0.604059197257891 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.111979009988196 [arcmin] (formal 1-sigma fit error)
    SNR: 62.4973999163192
 
  Angular difference between Flight and Ground position is 0.507846 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 203.888000011444 +/- 41.6406355071822
        Measured from: -1.68000000715256
                   to: 202.208000004292     [s; relative to TRIGTIME]
     T50: 55.4240000247955 +/- 3.1984396233763
        Measured from: 5.95200002193451
                   to: 61.37600004673     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.49199998378754     
                   to: 2.49199998378754     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.87999999523163     
                   to: 311.167999982834     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.615501   4.329044   3.212612   0.812372
           0.106930   0.108084   0.096733   0.087830 [error]
 Peak      0.090219   0.128110   0.102991   0.021787
           0.007150   0.008104   0.007381   0.006044 [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 9.97e-07 1.76e-06 2.38e-06 6.64e-06 6.91e-06 1.18e-05   erg/cm2
              Error 6.02e-08 6.02e-08 9.84e-08 6.26e-07 2.33e-07 6.84e-07   erg/cm2
Peak flux Power-law 8.16e-01 8.67e-01 6.53e-01 7.98e-01 2.64e+00 3.13e+00   ph/cm2/s
              Error 9.53e-02 6.35e-02 5.88e-02 1.45e-01 1.84e-01 2.29e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.81e-07 1.77e-06 2.40e-06 5.88e-06 6.86e-06 1.10e-05   erg/cm2
              Error 5.80e-08 6.64e-08 1.04e-07 1.49e-06 2.04e-07 1.24e-06   erg/cm2
Peak flux Cutoff-PL 7.60e-01 9.10e-01 6.74e-01 4.61e-01 2.59e+00 2.81e+00   ph/cm2/s
              Error 1.11e-01 7.81e-02 6.51e-02 -------- 1.90e-01 3.23e-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    1.564    0.061    -      -           2.33e-03 7.28e-05   44.950 57
CPL   1.485    0.182     338.0    0.0      2.54e-03 5.25e-04   44.630 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.409    0.118    -      -           2.16e-02 1.55e-03   57.680 57
CPL   0.954    0.487     111.6 1136.1      3.74e-02 2.32e-02   54.800 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: 112.384000 sec.
T50 in the 50-300 keV band: 36.736000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  316.048   -4.880  311.168
T90   203.888   -1.680  202.208
T50    55.424    5.952   61.376
Peak    1.000    1.492    2.492

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  147.4261 +70.5084 0.0031    1.6  118.8       4.6411    62.5  TRIG_00657750       
------------------------------------------
 
Foreground time interval of the image:
 -4.880  13.381 (delta_t =  18.261 [sec])
Background time interval of the image:
-239.120  -4.880 (delta_t = 234.240 [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   -4.880 sec. to  311.168 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56430     ( -0.0609053   0.06111 )
Norm@50keV  : 2.32712E-03    ( -7.28256e-05   7.27134e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.95 using 59 PHA bins.
# Reduced chi-squared =         0.7886 for     57 degrees of freedom 
# Null hypothesis probability =   8.761578e-01
 
Photon flux (15-150 keV)    in 316 sec: 0.295834 ( -0.00984169  0.0098846 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.90906e-06 ( -2.32404e-07  2.3351e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -4.880 sec. to  311.168 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48467     ( -0.248391   0.116382 )
Epeak [keV] : 337.988      ( -337.993 -337.993 )
Norm@50keV  : 2.54019E-03    ( -0.000275313   0.000774881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.63 using 59 PHA bins.
# Reduced chi-squared =         0.7969 for     56 degrees of freedom 
# Null hypothesis probability =   8.628326e-01
 
Photon flux (15-150 keV)    in 316 sec: 0.293968 ( -0.01116  0.011022 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.86425e-06 ( -2.73087e-07  1.35438e-07 ) ergs/cm2
 
Band function
Time interval is from   -4.880 sec. to  311.168 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.41756   ( 1.30043   1.30043 )
beta        : -1.63777    ( 1.63662   0.126517 )
Epeak [keV] : 192.012      ( -204.077 -204.077 )
Norm@50keV   : 2.75592E-03    ( -0.000449101   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.39 using 59 PHA bins.
# Reduced chi-squared =         0.8070 for     55 degrees of freedom 
# Null hypothesis probability =   8.463612e-01
 
Photon flux (15-150 keV)    in 316 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]    : 15.3747  (  )
R^2/D10^2   : 2.89220E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         258.77 using 59 PHA bins.
# Reduced chi-squared =         4.5398 for     57 degrees of freedom 
# Null hypothesis probability =   1.697198e-27
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.504e-07   2.876e-08
25- 50  1.830e-06   6.968e-08
50-150  2.976e-06   1.932e-07
15-150  5.256e-06   1.959e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-26.0961      -200)
Norm        : 1.19125       (-0.0367151     0.0367151)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.23 using 59 PHA bins.
# Reduced chi-squared =         0.8285 for     57 degrees of freedom 
# Null hypothesis probability =   8.186523e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.377e-07   3.318e-08
25- 50  1.804e-06   5.641e-08
50-150  3.956e-06   1.296e-07
15-150  6.697e-06   2.338e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.62074        (-0.928414      1.09273)
R1^2/D10^2  : 0.363827        (-0.146196      0.275323)
kT2 [keV]   : 25.0022        (-2.81189      4.23852)
R2^2/D10^2  : 4.28695E-03    (-0.0018467   0.00240204)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.42 using 59 PHA bins.
# Reduced chi-squared =          1.099 for     55 degrees of freedom 
# Null hypothesis probability =   2.863152e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.084e-07   1.141e-07
25- 50  1.768e-06   1.386e-07
50-150  3.995e-06   3.539e-07
15-150  6.671e-06   4.392e-07

Peak spectrum fit

Power-law model
Time interval is from    1.492 sec. to    2.492 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40945     ( -0.117903   0.1187 )
Norm@50keV  : 2.16367E-02    ( -0.00155429   0.00154768 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.68 using 59 PHA bins.
# Reduced chi-squared =          1.012 for     57 degrees of freedom 
# Null hypothesis probability =   4.498050e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.64066 ( -0.183962  0.184014 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.08668e-07 ( -1.68546e-08  1.70037e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.492 sec. to    2.492 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.953678     ( -0.51514   0.45842 )
Epeak [keV] : 111.561      ( -36.3383 2235.93 )
Norm@50keV  : 3.73615E-02    ( -0.0153741   0.0309418 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.80 using 59 PHA bins.
# Reduced chi-squared =         0.9786 for     56 degrees of freedom 
# Null hypothesis probability =   5.202353e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.59449 ( -0.19  0.18976 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.00562e-07 ( -1.8916e-08  1.894e-08 ) ergs/cm2
 
Band function
Time interval is from    1.492 sec. to    2.492 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.65864   ( -3.10591   -1.67692 )
beta        : -1.55818    ( 1.55796   0.172169 )
Epeak [keV] : 33.7360      ( -8.80511 128.145 )
Norm@50keV   : 2.99364    ( -3.38504   456 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.70 using 59 PHA bins.
# Reduced chi-squared =         0.9581 for     55 degrees of freedom 
# Null hypothesis probability =   5.630917e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.03525e-07 ( -2.03518e-07  -1.7466e-08 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.9008  (-1.29671  1.44721)
R^2/D10^2   : 0.313714  (-0.0858383   0.11603)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          93.91 using 59 PHA bins.
# Reduced chi-squared =          1.647 for     57 degrees of freedom 
# Null hypothesis probability =   1.506801e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.460e-08   1.795e-09
25- 50  5.765e-08   5.175e-09
50-150  8.686e-08   1.273e-08
15-150  1.591e-07   1.485e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-31.4006      -200)
Norm        : 10.7933       (-0.749864     0.749864)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.60 using 59 PHA bins.
# Reduced chi-squared =          1.028 for     57 degrees of freedom 
# Null hypothesis probability =   4.166053e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.697e-08   2.045e-09
25- 50  5.189e-08   4.855e-09
50-150  1.138e-07   3.333e-08
15-150  1.927e-07   3.320e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.30378        (-1.55288      1.90209)
R1^2/D10^2  : 2.19830        (-1.09228      2.5648)
kT2 [keV]   : 26.3235        (-5.32083      10.9742)
R2^2/D10^2  : 3.44087E-02    (-0.0239578   0.0250665)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.93 using 59 PHA bins.
# Reduced chi-squared =         0.9624 for     55 degrees of freedom 
# Null hypothesis probability =   5.540890e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.367e-08   7.260e-09
25- 50  5.261e-08   1.152e-08
50-150  1.250e-07   5.180e-08
15-150  2.013e-07   6.023e-08
Plot creation:
Wed Oct  7 11:17:12 EDT 2015