batgrbproduct Analysis for Trigger=629578

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Feb  5 09:29:46 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger629578/batgroup_hand_proc
======================================================================

  Trigger: 00629578      Segment: 000

  BAT Trigger Time: 444629360.64   [s; MET]
      Trigger Stop: 444629361.664   [s; MET]
               UTC: 2015-02-03T04:09:07.504140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 98.4145772413157   Dec: 6.96780251737358  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     NO
     Rate S/N Ratio:     13.856406460551  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 98.4145772413157   Dec: 6.96780251737358  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 98.3938930276037   Dec: 6.95196356106658  [deg; J2000]  
        { 06h 33m 34.5s , +06d 57' 07.1" }
         +/- 1.1174202120452 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.381368221336769 [arcmin] (formal 1-sigma fit error)
    SNR: 25.9559921005288
 
  Angular difference between Flight and Ground position is 1.555872 arcmin
 
  Partial Coding Fraction: 0.84375    [ including projection effects ]

  Duration
     T90: 25.8479999303818 +/- 4.97665145161563
        Measured from: 0.38400000333786
                   to: 26.2319999337196     [s; relative to TRIGTIME]
     T50: 12.0799999237061 +/- 1.60969192281866
        Measured from: 6.66000002622604
                   to: 18.7399999499321     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 16.7919999957085     
                   to: 17.7919999957085     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.828000009059906     
                   to: 32.2840000391006     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.616138   0.646656   0.347799   0.070421
           0.034203   0.033291   0.027822   0.022399 [error]
 Peak      0.035927   0.047408   0.023673   0.005135
           0.006152   0.006194   0.005134   0.003939 [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 1.84e-07 2.65e-07 2.83e-07 5.63e-07 9.07e-07 1.30e-06   erg/cm2
              Error 1.77e-08 1.62e-08 2.75e-08 1.12e-07 6.32e-08 1.38e-07   erg/cm2
Peak flux Power-law 3.70e-01 3.00e-01 1.64e-01 1.31e-01 8.92e-01 9.65e-01   ph/cm2/s
              Error 8.43e-02 4.85e-02 4.07e-02 6.12e-02 1.45e-01 1.59e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.76e-07 2.75e-07 2.84e-07 3.21e-07 8.78e-07 1.06e-06   erg/cm2
              Error 2.04e-08 2.06e-08 2.91e-08 2.30e-07 7.26e-08 1.81e-07   erg/cm2
Peak flux Cutoff-PL 3.21e-01 3.47e-01 1.69e-01 3.52e-02 8.65e-01 8.72e-01   ph/cm2/s
              Error 9.73e-02 6.62e-02 4.88e-02 5.72e-02 1.46e-01 1.53e-01   ph/cm2/s
 
Fluence        Band 1.74e-07 2.76e-07 2.78e-07 4.48e-07 8.82e-07 1.18e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 3.30e-01 3.36e-01 1.74e-01 5.21e-02 8.79e-01 8.94e-01   ph/cm2/s
              Error -------- 6.78e-02 -------- -------- 1.49e-01 1.60e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.902    0.116    -      -           2.98e-03 2.09e-04   46.900 57
CPL   1.561    0.446      58.2  -20.5      4.57e-03 2.71e-03   45.110 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    1.871    0.277    -      -           6.29e-03 1.21e-03   57.900 57
CPL   0.595    1.329      48.5   27.9      3.25e-02 1.17e-01   54.080 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: 20.544000 sec.
T50 in the 50-300 keV band: 14.784000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   33.112   -0.828   32.284
T90    25.848    0.384   26.232
T50    12.080    6.660   18.740
Peak    1.000   16.792   17.792

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   98.3939     6.9520   0.0074    20.7320   148.5975         1.3776716     25.956 TRIG_00629578                 
 
Foreground time interval of the image:
 -0.828  20.061 (delta_t =  20.889 [sec])
Background time interval of the image:
-119.640  -0.828 (delta_t = 118.812 [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   -0.828 sec. to   32.284 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.90244     ( -0.115019   0.1177 )
Norm@50keV  : 2.97897E-03    ( -0.000210698   0.000208224 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.90 using 59 PHA bins.
# Reduced chi-squared =         0.8228 for     57 degrees of freedom 
# Null hypothesis probability =   8.276603e-01
 
Photon flux (15-150 keV)    in 33.11 sec: 0.427956 ( -0.0267678  0.0268048 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.06827e-07 ( -6.29474e-08  6.35076e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.828 sec. to   32.284 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56057     ( -0.484778   0.408046 )
Epeak [keV] : 58.2292      ( -17.2012 -58.2292 )
Norm@50keV  : 4.56556E-03    ( -0.00170417   0.0037156 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.11 using 59 PHA bins.
# Reduced chi-squared =         0.8055 for     56 degrees of freedom 
# Null hypothesis probability =   8.509877e-01
 
Photon flux (15-150 keV)    in 33.11 sec: 0.420284 ( -0.028414  0.028411 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.78316e-07 ( -7.22791e-08  7.28718e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.828 sec. to   32.284 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.56056   ( 1.56525   0.504867 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 58.2186      ( -17.1933 -58.2186 )
Norm@50keV   : 4.56480E-03    ( -0.00164009   0.00371764 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.11 using 59 PHA bins.
# Reduced chi-squared =         0.8201 for     55 degrees of freedom 
# Null hypothesis probability =   8.268998e-01
 
Photon flux (15-150 keV)    in 33.11 sec: 0.423107 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.81762e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.2646  (-0.854205  0.93018)
R^2/D10^2   : 0.124167  (-0.0322883   0.0434199)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         104.88 using 59 PHA bins.
# Reduced chi-squared =         1.8399 for     57 degrees of freedom 
# Null hypothesis probability =   1.159988e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.095e-07   1.301e-08
25- 50  3.190e-07   2.374e-08
50-150  2.328e-07   3.660e-08
15-150  6.613e-07   4.818e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 84.3143       (-16.3479      23.2985)
Norm        : 1.95586       (-0.183871     0.210385)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.92 using 59 PHA bins.
# Reduced chi-squared =         0.8056 for     57 degrees of freedom 
# Null hypothesis probability =   8.531802e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.685e-07   1.753e-08
25- 50  2.809e-07   1.750e-08
50-150  4.105e-07   1.276e-07
15-150  8.599e-07   1.030e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.75408        (-1.213      1.39451)
R1^2/D10^2  : 1.07240        (-0.566131      1.60097)
kT2 [keV]   : 20.0910        (-3.7523      6.29759)
R2^2/D10^2  : 1.05684E-02    (-0.00685808   0.0139169)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.29 using 59 PHA bins.
# Reduced chi-squared =         0.8599 for     55 degrees of freedom 
# Null hypothesis probability =   7.605124e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.739e-07   4.473e-08
25- 50  2.692e-07   5.917e-08
50-150  4.169e-07   1.211e-07
15-150  8.599e-07   2.147e-07

Peak spectrum fit

Power-law model
Time interval is from   16.792 sec. to   17.792 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87116     ( -0.266567   0.287546 )
Norm@50keV  : 6.29462E-03    ( -0.00123085   0.00119902 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.90 using 59 PHA bins.
# Reduced chi-squared =          1.016 for     57 degrees of freedom 
# Null hypothesis probability =   4.419064e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.892485 ( -0.144802  0.144835 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.78695e-08 ( -1.10213e-08  1.13158e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   16.792 sec. to   17.792 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.594664     ( -1.52354   1.13516 )
Epeak [keV] : 48.4944      ( -13.3455 42.3917 )
Norm@50keV  : 3.25192E-02    ( -0.0325134   0.201636 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.08 using 59 PHA bins.
# Reduced chi-squared =         0.9657 for     56 degrees of freedom 
# Null hypothesis probability =   5.478317e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.865385 ( -0.146048  0.146345 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.33226e-08 ( -1.08539e-08  1.17233e-08 ) ergs/cm2
 
Band function
Time interval is from   16.792 sec. to   17.792 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.592478   ( -0.681343   2.18698 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 48.4663      ( -13.3099 42.4449 )
Norm@50keV   : 3.26179E-02    ( -0.0326179   0.202453 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.08 using 59 PHA bins.
# Reduced chi-squared =         0.9833 for     55 degrees of freedom 
# Null hypothesis probability =   5.097198e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.878903 ( 6.1211  -0.158378 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.32644e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.3992  (-1.93828  2.31014)
R^2/D10^2   : 0.271209  (-0.135551   0.269525)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.82 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     57 degrees of freedom 
# Null hypothesis probability =   4.086899e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.409e-09   2.155e-09
25- 50  2.192e-08   5.495e-09
50-150  1.652e-08   6.693e-09
15-150  4.584e-08   1.130e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 81.3666       (-30.8428      69.7679)
Norm        : 4.24596       (-0.843456     1.14251)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.07 using 59 PHA bins.
# Reduced chi-squared =         0.9661 for     57 degrees of freedom 
# Null hypothesis probability =   5.480075e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.103e-08   2.503e-09
25- 50  1.823e-08   4.080e-09
50-150  2.603e-08   1.582e-08
15-150  5.529e-08   1.876e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.33393        (-3.60529      23.506)
R1^2/D10^2  : 2.23931        (-1.87951      5.19771)
kT2 [keV]   : 15.8487        (-4.58275      12.9445)
R2^2/D10^2  : 6.15793E-02    (-0.0575529   0.202998)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.70 using 59 PHA bins.
# Reduced chi-squared =         0.9764 for     55 degrees of freedom 
# Null hypothesis probability =   5.242825e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.021e-08   5.890e-09
25- 50  1.872e-08   9.410e-09
50-150  2.369e-08   1.420e-08
15-150  5.263e-08   2.726e-08
Plot creation:
Thu Feb  5 09:42:04 EST 2015