batgrbproduct Analysis for Trigger=637044

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Apr  4 20:48:41 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger637044/GCN5_download_cron
======================================================================

  Trigger: 00637044      Segment: 000

  BAT Trigger Time: 449790870.208   [s; MET]
      Trigger Stop: 449790871.232   [s; MET]
               UTC: 2015-04-03T21:54:16.809780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 311.504549158767   Dec: -62.7015671965277  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    21.08
     Image Trigger?:     NO
     Rate S/N Ratio:     77.9037868142493  [ if not an image trigger ]
     Image S/N Ratio:    21.08

  Flight Position:   [ source = BAT ]
    RA: 311.504549158767   Dec: -62.7015671965277  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 311.504263843077   Dec: -62.7059769894068  [deg; J2000]  
        { 20h 46m 01.0s , -62d 42' 21.5" }
         +/- 0.71716017797945 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.193138139120979 [arcmin] (formal 1-sigma fit error)
    SNR: 48.9081234241698
 
  Angular difference between Flight and Ground position is 0.264704 arcmin
 
  Partial Coding Fraction: 0.4023438    [ including projection effects ]

  Duration
     T90: 38.7719999551773 +/- 12.0135891154935
        Measured from: -5.47599989175797
                   to: 33.2960000634193     [s; relative to TRIGTIME]
     T50: 8.91999989748001 +/- 0.51482032591538
        Measured from: 2.27600014209747
                   to: 11.1960000395775     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.80400002002716     
                   to: 6.80400002002716     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -83.6520000100136     
                   to: 145.371999979019     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.158168   8.336276   8.147355   2.643905
           0.133468   0.137045   0.123314   0.102737 [error]
 Peak      0.348014   0.707447   0.844866   0.317534
           0.017466   0.022496   0.024436   0.019396 [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 1.68e-06 3.65e-06 6.24e-06 2.46e-05 1.71e-05 3.62e-05   erg/cm2
              Error 7.65e-08 9.67e-08 1.34e-07 1.28e-06 3.46e-07 1.31e-06   erg/cm2
Peak flux Power-law 3.62e+00 5.16e+00 5.46e+00 1.07e+01 1.76e+01 2.49e+01   ph/cm2/s
              Error 2.60e-01 2.23e-01 1.97e-01 8.53e-01 6.02e-01 9.58e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.62e-06 3.66e-06 6.32e-06 2.14e-05 1.70e-05 3.30e-05   erg/cm2
              Error 7.86e-08 9.87e-08 1.65e-07 3.56e-06 3.65e-07 4.35e-06   erg/cm2
Peak flux Cutoff-PL 3.44e+00 5.20e+00 5.59e+00 8.96e+00 1.75e+01 2.32e+01   ph/cm2/s
              Error 3.35e-01 2.33e-01 2.50e-01 1.97e+00 6.19e-01 2.46e+00   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    1.227    0.038    -      -           7.42e-03 1.52e-04   39.570 57
CPL   1.109    0.142     463.6    0.0      8.29e-03 9.50e-04   37.780 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.917    0.060    -      -           1.53e-01 5.21e-03   51.260 57
CPL   0.741    0.189     424.7    0.0      1.83e-01 3.91e-02   49.500 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: 27.264000 sec.
T50 in the 50-300 keV band: 6.976000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  229.024  -83.652  145.372
T90    38.772   -5.476   33.296
T50     8.920    2.276   11.196
Peak    1.000    5.804    6.804

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  311.5043 -62.7060 0.0039   33.0  -65.4      16.6681    48.9  TRIG_00637044       
------------------------------------------
 
Foreground time interval of the image:
-83.652   9.593 (delta_t =  93.245 [sec])
Background time interval of the image:
-239.208 -83.652 (delta_t = 155.556 [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  -83.652 sec. to  145.372 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.22677     ( -0.0380186   0.0378506 )
Norm@50keV  : 7.42098E-03    ( -0.000152451   0.000152071 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.57 using 59 PHA bins.
# Reduced chi-squared =         0.6942 for     57 degrees of freedom 
# Null hypothesis probability =   9.618674e-01
 
Photon flux (15-150 keV)    in 229 sec: 0.874496 ( -0.0199136  0.0199762 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.71137e-05 ( -3.4598e-07  3.46133e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -83.652 sec. to  145.372 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10944     ( -0.154153   0.13027 )
Epeak [keV] : 463.558      ( -463.559 -463.559 )
Norm@50keV  : 8.29452E-03    ( -0.000632486   0.00126791 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.78 using 59 PHA bins.
# Reduced chi-squared =         0.6747 for     56 degrees of freedom 
# Null hypothesis probability =   9.705529e-01
 
Photon flux (15-150 keV)    in 229 sec: 0.866708 ( -0.021984  0.022053 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7034e-05 ( -3.65438e-07  3.64087e-07 ) ergs/cm2
 
Band function
Time interval is from  -83.652 sec. to  145.372 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.770483   ( 0.771183   0.771183 )
beta        : -1.25586    ( 1.2559   0.0537336 )
Epeak [keV] : 101.889      ( -102.312 8974.98 )
Norm@50keV   : 1.35792E-02    ( -0.00587715   375.531 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.74 using 59 PHA bins.
# Reduced chi-squared =         0.6861 for     55 degrees of freedom 
# Null hypothesis probability =   9.635477e-01
 
Photon flux (15-150 keV)    in 229 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]    : 21.4319  (  )
R^2/D10^2   : 3.10119E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         477.03 using 59 PHA bins.
# Reduced chi-squared =         8.3689 for     57 degrees of freedom 
# Null hypothesis probability =   1.230974e-67
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.108e-07   2.565e-08
25- 50  3.180e-06   9.732e-08
50-150  1.090e-05   3.481e-07
15-150  1.469e-05   3.206e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 3.81158       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         302.11 using 59 PHA bins.
# Reduced chi-squared =         5.3003 for     57 degrees of freedom 
# Null hypothesis probability =   4.476755e-35
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.173e-06   4.775e-08
25- 50  4.181e-06   9.275e-08
50-150  9.170e-06   2.290e-07
15-150  1.552e-05   3.538e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.40649        (-0.729303      0.789188)
R1^2/D10^2  : 0.398115        (-0.0993936      0.141488)
kT2 [keV]   : 33.7760        (-2.48662      3.1747)
R2^2/D10^2  : 5.97486E-03    (-0.00152871   0.00175958)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.08 using 59 PHA bins.
# Reduced chi-squared =         0.8015 for     55 degrees of freedom 
# Null hypothesis probability =   8.541140e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.432e-06   1.107e-07
25- 50  3.757e-06   1.706e-07
50-150  1.185e-05   4.878e-07
15-150  1.704e-05   6.801e-07

Peak spectrum fit

Power-law model
Time interval is from    5.804 sec. to    6.804 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.917268     ( -0.0600785   0.0596147 )
Norm@50keV  : 0.153183    ( -0.00521834   0.00520529 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.26 using 59 PHA bins.
# Reduced chi-squared =         0.8993 for     57 degrees of freedom 
# Null hypothesis probability =   6.892159e-01
 
Photon flux (15-150 keV)    in 1 sec: 17.5857 ( -0.601548  0.601889 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.70773e-06 ( -6.27885e-08  6.29095e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    5.804 sec. to    6.804 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.741451     ( -0.237779   0.140361 )
Epeak [keV] : 424.691      ( -424.691 -424.691 )
Norm@50keV  : 0.182527    ( -0.0310818   0.0470949 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.50 using 59 PHA bins.
# Reduced chi-squared =         0.8840 for     56 degrees of freedom 
# Null hypothesis probability =   7.175916e-01
 
Photon flux (15-150 keV)    in 1 sec: 17.4672 ( -0.6193  0.6194 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.69707e-06 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    5.804 sec. to    6.804 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99996   ( -0.000122492   -4.99996 )
beta        : -0.962194    ( -0.0657477   0.0654902 )
Epeak [keV] : 28.6208      ( -6.2177 3.6651 )
Norm@50keV   : 4391.03    ( -145.907   13645.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.34 using 59 PHA bins.
# Reduced chi-squared =         0.8606 for     55 degrees of freedom 
# Null hypothesis probability =   7.591065e-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]    : 23.6864  (  )
R^2/D10^2   : 0.511640  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         186.22 using 59 PHA bins.
# Reduced chi-squared =         3.2669 for     57 degrees of freedom 
# Null hypothesis probability =   1.263576e-15
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.127e-08   3.685e-09
25- 50  2.827e-07   1.470e-08
50-150  1.183e-06   6.150e-08
15-150  1.517e-06   6.350e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 69.9872       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         346.60 using 59 PHA bins.
# Reduced chi-squared =         6.0806 for     57 degrees of freedom 
# Null hypothesis probability =   4.172875e-43
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.743e-07   6.250e-09
25- 50  3.352e-07   1.310e-08
50-150  7.352e-07   2.890e-08
15-150  1.245e-06   4.200e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.81854        (-1.26229      1.4879)
R1^2/D10^2  : 5.57283        (-1.98651      3.33834)
kT2 [keV]   : 38.1400        (-4.63224      7.18094)
R2^2/D10^2  : 0.105641    (-0.0421832   0.0519517)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.67 using 59 PHA bins.
# Reduced chi-squared =         0.8486 for     55 degrees of freedom 
# Null hypothesis probability =   7.804745e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.040e-07   1.562e-08
25- 50  3.097e-07   2.940e-08
50-150  1.303e-06   1.325e-07
15-150  1.717e-06   1.625e-07
Plot creation:
Sat Apr  4 20:52:37 EDT 2015