batgrbproduct Analysis for Trigger=628458

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jan 28 13:43:13 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger628458/batgroup_hand_proc
======================================================================

  Trigger: 00628458      Segment: 000

  BAT Trigger Time: 444050768   [s; MET]
      Trigger Stop: 444051224   [s; MET]
               UTC: 2015-01-27T11:25:54.893320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 189.211116194227   Dec: 7.32963189728959  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.06
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.06

  Flight Position:   [ source = BAT ]
    RA: 189.211116194227   Dec: 7.32963189728959  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 189.261768164425   Dec: 7.26375258178447  [deg; J2000]  
        { 12h 37m 02.8s , +07d 15' 49.5" }
         +/- 4.81000511942368 [arcmin] (estimated 90% radius based on SNR)
         +/- 4.05462121753384 [arcmin] (formal 1-sigma fit error)
    SNR: 3.22570578743943
 
  Angular difference between Flight and Ground position is 4.971072 arcmin
 
  Partial Coding Fraction: 0.984375    [ including projection effects ]

  Duration
     T90: 456 +/- 
        Measured from: 0
                   to: 456     [s; relative to TRIGTIME]
     T50: 456 +/- 
        Measured from: 0
                   to: 456     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 456 second)
        Measured from: 0     
                   to: 456     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 456     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.405003   0.442272   0.073180   0.107883
           0.102492   0.102909   0.091859   0.082408 [error]
 Peak      0.405003   0.442272   0.073180   0.107883
           0.102492   0.102909   0.091859   0.082408 [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 1.02e-07 1.41e-07 1.45e-07 2.73e-07 4.75e-07 6.61e-07   erg/cm2
              Error 3.82e-08 4.40e-08 7.88e-08 3.23e-07 1.81e-07 3.75e-07   erg/cm2
Peak flux Power-law 7.27e-03 5.58e-03 2.86e-03 2.12e-03 1.67e-02 1.78e-02   ph/cm2/s
              Error 2.78e-03 1.71e-03 1.44e-03 2.37e-03 5.02e-03 5.57e-03   ph/cm2/s
 
Fluence   Cutoff-PL 9.32e-08 2.02e-07 4.84e-08 3.30e-10 3.44e-07 3.44e-07   erg/cm2
              Error 4.58e-08 6.83e-08 7.77e-08 2.61e-08 1.24e-07 1.14e-07   erg/cm2
Peak flux Cutoff-PL 6.38e-03 8.08e-03 1.11e-03 4.18e-06 1.56e-02 1.56e-02   ph/cm2/s
              Error 3.28e-03 2.65e-03 1.60e-03 2.74e-04 4.62e-03 4.62e-03   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    1.960    0.532    -      -           1.13e-04 4.44e-05   70.940 57
CPL  -2.310    4.840      33.3    8.1      7.39e-02 4.81e+02   66.320 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.960    0.532    -      -           1.13e-04 4.44e-05   70.940 57
CPL  -2.310    4.840      33.3    8.1      7.39e-02 4.81e+02   66.320 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  456.000    0.000  456.000
T90   456.000    0.000  456.000
T50   456.000    0.000  456.000
Peak  456.000    0.000  456.000

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  189.2618     7.2638   0.0597     9.0364    42.6363         0.9288048      3.226 TRIG_00628458                 
 
Foreground time interval of the image:
  0.000 456.000 (delta_t = 456.000 [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

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    0.000 sec. to  456.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96038     ( -0.497722   0.566688 )
Norm@50keV  : 1.13274E-04    ( -4.46864e-05   4.41181e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.94 using 59 PHA bins.
# Reduced chi-squared =          1.244 for     57 degrees of freedom 
# Null hypothesis probability =   1.014806e-01
 
Photon flux (15-150 keV)    in 456 sec: 1.66882E-02 ( -0.00501848  0.00502771 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.75293e-07 ( -1.72447e-07  1.89536e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  456.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.30993     ( -6.24182   3.43751 )
Epeak [keV] : 33.2992      ( -7.13435 8.99624 )
Norm@50keV  : 7.38586E-02    ( -0.0904776   961.118 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.32 using 59 PHA bins.
# Reduced chi-squared =          1.184 for     56 degrees of freedom 
# Null hypothesis probability =   1.628559e-01
 
Photon flux (15-150 keV)    in 456 sec: 1.55813E-02 ( -0.0045755  0.00467 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.44092e-07 ( -1.07834e-07  1.40276e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  456.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.44262   ( -4.94757   -3.85836 )
beta        : -6.02831    ( 5.54423   14.119 )
Epeak [keV] : 32.9736      ( -12.7235 7.37047 )
Norm@50keV   : 0.404808    ( -0.406888   3.4289 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.23 using 59 PHA bins.
# Reduced chi-squared =          1.204 for     55 degrees of freedom 
# Null hypothesis probability =   1.427917e-01
 
Photon flux (15-150 keV)    in 456 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]    : 8.58776  (-1.97024  2.60776)
R^2/D10^2   : 1.54119E-02  (-0.0154119   0.0266241)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.53 using 59 PHA bins.
# Reduced chi-squared =          1.167 for     57 degrees of freedom 
# Null hypothesis probability =   1.817453e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.830e-08   5.610e-08
25- 50  1.939e-07   1.150e-07
50-150  6.394e-08   4.741e-08
15-150  3.561e-07   2.062e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 52.9459       (-27.4299      120.562)
Norm        : 9.38633E-02       (-0.03617     0.0615114)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.40 using 59 PHA bins.
# Reduced chi-squared =          1.218 for     57 degrees of freedom 
# Null hypothesis probability =   1.254555e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.060e-07   6.215e-08
25- 50  1.552e-07   9.188e-08
50-150  1.589e-07   1.274e-07
15-150  4.201e-07   2.695e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 200.000        (      )
R1^2/D10^2  : 7.65109E-07        (-7.65109e-07      -7.65109e-07)
kT2 [keV]   : 8.28826        (-1.87233      2.66846)
R2^2/D10^2  : 1.71610E-02    (-0.0113087   0.0216645)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.53 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.13 using 59 PHA bins.
# Reduced chi-squared =          1.210 for     55 degrees of freedom 
# Reduced chi-squared =          1.202 for     55 degrees of freedom 
# Null hypothesis probability =   1.370948e-01
# Null hypothesis probability =   1.446274e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.742e-08   4.644e-02
25- 50  1.944e-07   4.004e-01
50-150  6.562e-08   9.977e+00
15-150  3.574e-07   9.435e+00

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to  456.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96038     ( -0.497722   0.566688 )
Norm@50keV  : 1.13274E-04    ( -4.46864e-05   4.41181e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.94 using 59 PHA bins.
# Reduced chi-squared =          1.244 for     57 degrees of freedom 
# Null hypothesis probability =   1.014806e-01
 
Photon flux (15-150 keV)    in 456 sec: 1.66882E-02 ( -0.00501848  0.00502771 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.75293e-07 ( -1.72447e-07  1.89536e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to  456.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.30993     ( -6.24182   3.43751 )
Epeak [keV] : 33.2992      ( -7.13435 8.99624 )
Norm@50keV  : 7.38586E-02    ( -0.0904776   961.118 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.32 using 59 PHA bins.
# Reduced chi-squared =          1.184 for     56 degrees of freedom 
# Null hypothesis probability =   1.628559e-01
 
Photon flux (15-150 keV)    in 456 sec: 1.55813E-02 ( -0.0045755  0.00467 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.44092e-07 ( -1.07834e-07  1.40276e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to  456.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.44262   ( -4.94757   -3.85836 )
beta        : -6.02831    ( 5.54423   14.119 )
Epeak [keV] : 32.9736      ( -12.7235 7.37047 )
Norm@50keV   : 0.404808    ( -0.406888   3.81875 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.23 using 59 PHA bins.
# Reduced chi-squared =          1.204 for     55 degrees of freedom 
# Null hypothesis probability =   1.427917e-01
 
Photon flux (15-150 keV)    in 456 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]    : 8.58776  (-1.97024  2.60776)
R^2/D10^2   : 1.54119E-02  (-0.0154119   0.0266241)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.53 using 59 PHA bins.
# Reduced chi-squared =          1.167 for     57 degrees of freedom 
# Null hypothesis probability =   1.817453e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.830e-08   5.880e-08
25- 50  1.939e-07   1.178e-07
50-150  6.394e-08   4.877e-08
15-150  3.561e-07   1.958e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 52.9459       (-27.4299      120.562)
Norm        : 9.38633E-02       (-0.03617     0.0615114)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.40 using 59 PHA bins.
# Reduced chi-squared =          1.218 for     57 degrees of freedom 
# Null hypothesis probability =   1.254555e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.060e-07   6.319e-08
25- 50  1.552e-07   8.918e-08
50-150  1.589e-07   1.258e-07
15-150  4.201e-07   2.554e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 200.000        (      )
R1^2/D10^2  : 7.65109E-07        (-7.65109e-07      -7.65109e-07)
kT2 [keV]   : 8.28826        (-1.87233      2.66846)
R2^2/D10^2  : 1.71610E-02    (-0.0113087   0.0216645)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.53 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.13 using 59 PHA bins.
# Reduced chi-squared =          1.210 for     55 degrees of freedom 
# Reduced chi-squared =          1.202 for     55 degrees of freedom 
# Null hypothesis probability =   1.370948e-01
# Null hypothesis probability =   1.446274e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.742e-08   4.747e-02
25- 50  1.944e-07   4.068e-01
50-150  6.562e-08   9.485e+00
15-150  3.574e-07   1.020e+01
Plot creation:
Wed Jan 28 14:04:10 EST 2015