batgrbproduct Analysis for Trigger=602278

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jun 23 02:29:29 EDT 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger602278/GCN5_download_cron
======================================================================

  Trigger: 00602278      Segment: 000

  BAT Trigger Time: 425122576.888   [s; MET]
      Trigger Stop: 425122576.952   [s; MET]
               UTC: 2014-06-22T09:36:04.716920    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 317.1522269814   Dec: -14.4303092061331  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.79
     Image Trigger?:     NO
     Rate S/N Ratio:     12.4498995979887  [ if not an image trigger ]
     Image S/N Ratio:    6.79

  Flight Position:   [ source = BAT ]
    RA: 317.1522269814   Dec: -14.4303092061331  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 317.154608727158   Dec: -14.4118482434694  [deg; J2000]  
        { 21h 08m 37.1s , -14d 24' 42.7" }
         +/- 2.52845373643029 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.33320174893117 [arcmin] (formal 1-sigma fit error)
    SNR: 8.08371922245328
 
  Angular difference between Flight and Ground position is 1.116271 arcmin
 
  Partial Coding Fraction: 0.5703125    [ including projection effects ]

  Duration
     T90: 0.131999969482422 +/- 0.035777106832332
        Measured from: -0.0119999051094055
                   to: 0.120000064373016     [s; relative to TRIGTIME]
     T50: 0.0519999861717224 +/- 0.0341760075028058
        Measured from: 0.0120000839233398
                   to: 0.0640000700950623     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.446000039577484     
                   to: 0.553999960422516     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0239999890327454     
                   to: 0.12799996137619     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.011595   0.029216   0.016356   0.002189
           0.004143   0.004487   0.003801   0.002701 [error]
 Peak      0.016738   0.039152   0.009991   0.007833
           0.008956   0.008993   0.007793   0.006138 [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 6.13e-09 4.42e-09 2.11e-09 1.42e-09 1.33e-08 1.41e-08   erg/cm2
              Error 1.91e-09 1.25e-09 7.58e-10 7.65e-10 3.76e-09 3.99e-09   erg/cm2
Peak flux Power-law 2.71e-01 2.12e-01 1.11e-01 8.49e-02 6.33e-01 6.79e-01   ph/cm2/s
              Error 1.38e-01 7.49e-02 6.16e-02 1.05e-01 2.25e-01 2.42e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.55e-09 1.24e-08 8.97e-09 9.12e-10 2.68e-08 2.69e-08   erg/cm2
              Error 2.01e-09 2.86e-09 3.35e-09 5.78e-09 5.81e-09 0.00e+00   erg/cm2
Peak flux Cutoff-PL 2.66e-01 2.19e-01 1.11e-01 5.65e-02 6.28e-01 6.46e-01   ph/cm2/s
              Error 2.07e-01 1.38e-01 8.84e-02 1.04e-01 2.61e-01 2.55e-01   ph/cm2/s
 
Fluence        Band 4.55e-09 1.01e-09 9.63e-10 2.69e-08 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.066    0.294    -      -           7.08e-03 2.23e-03   64.600 57
CPL  -1.178    1.806      44.2    7.4      1.18e+00 1.17e+01   36.650 56
 
The chi2 of BB fit is 36.91 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    1.927    0.683    -      -           4.36e-03 1.88e-03   35.820 57
CPL   1.534    1.336      46.4    0.0      7.53e-03 0.00e+00   35.810 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    0.152   -0.024    0.128
T90     0.132   -0.012    0.120
T50     0.052    0.012    0.064
Peak    1.000   -0.446    0.554

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  317.1546 -14.4118 0.0238   37.8    4.4       0.0604     8.1  TRIG_00602278       
------------------------------------------
 
Foreground time interval of the image:
 -0.024   0.128 (delta_t =   0.152 [sec])
Background time interval of the image:
-60.888  -0.024 (delta_t =  60.864 [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   -0.024 sec. to    0.128 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.06565     ( -0.261143   0.327781 )
Norm@50keV  : 7.08149E-03    ( -0.00226299   0.00219423 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.60 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     57 degrees of freedom 
# Null hypothesis probability =   2.282581e-01
 
Photon flux (15-150 keV)    in 0.152 sec: 2.04414 ( -0.593412  0.593871 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33388e-08 ( -3.76229e-09  3.76232e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.024 sec. to    0.128 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.17771     ( -2.30702   1.3053 )
Epeak [keV] : 44.1527      ( -7.87326 6.9381 )
Norm@50keV  : 1.17877    ( -1.17877   22.1587 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.65 using 59 PHA bins.
# Reduced chi-squared =         0.6544 for     56 degrees of freedom 
# Null hypothesis probability =   9.788629e-01
 
Photon flux (15-150 keV)    in 0.152 sec: 2.97612 ( -0.65868  0.66407 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.68175e-08 ( -5.78162e-09  5.77782e-09 ) ergs/cm2
 
Band function
Time interval is from   -0.024 sec. to    0.128 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.26753   ( -1.04153   3.47355 )
beta        : -8.50600    ( 9.09099   4.44121 )
Epeak [keV] : 44.1920      ( -7.96086 5.63333 )
Norm@50keV   : 1.30984    ( -1.20828   129.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.65 using 59 PHA bins.
# Reduced chi-squared =         0.6665 for     55 degrees of freedom 
# Null hypothesis probability =   9.730534e-01
 
Photon flux (15-150 keV)    in 0.152 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.6904e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.6289  (-2.0201  1.67498)
R^2/D10^2   : 0.959525  (-0.427924   1.00026)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.91 using 59 PHA bins.
# Reduced chi-squared =         0.6476 for     57 degrees of freedom 
# Null hypothesis probability =   9.820763e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.158e-09   1.418e-09
25- 50  1.260e-08   3.639e-09
50-150  1.003e-08   3.716e-09
15-150  2.679e-08   7.760e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 34.8611       (-6.73969      6.67026)
Norm        : 20.7557       (-5.81009     6.58205)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.60 using 59 PHA bins.
# Reduced chi-squared =         0.8351 for     57 degrees of freedom 
# Null hypothesis probability =   8.079605e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.881e-09   1.832e-09
25- 50  8.500e-09   1.879e-09
50-150  5.618e-09   2.113e-09
15-150  2.100e-08   5.031e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.88018        (-7.521      -7.521)
R1^2/D10^2  : 1.05609        (-1.07777      -1.07777)
kT2 [keV]   : 12.6031        (-12.5496      50.9927)
R2^2/D10^2  : 0.546978    (-0.555185   1.32402)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.62 using 59 PHA bins.
# Reduced chi-squared =         0.6658 for     55 degrees of freedom 
# Null hypothesis probability =   9.733193e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.582e-09   4.804e-09
25- 50  1.236e-08   1.368e-08
50-150  9.947e-09   2.450e-08
15-150  2.689e-08   3.181e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.446 sec. to    0.554 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.92684     ( -0.629986   0.73578 )
Norm@50keV  : 4.35726E-03    ( -0.00195112   0.00181743 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.82 using 59 PHA bins.
# Reduced chi-squared =         0.6285 for     57 degrees of freedom 
# Null hypothesis probability =   9.873581e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.632558 ( -0.22472  0.224895 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.00747e-08 ( -1.63214e-08  1.72289e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.446 sec. to    0.554 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.53359     ( -1.57674   1.09514 )
Epeak [keV] : 46.3991      (   )
Norm@50keV  : 7.52780E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.81 using 59 PHA bins.
# Reduced chi-squared =         0.6394 for     56 degrees of freedom 
# Null hypothesis probability =   9.837097e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.627717 ( -0.292495  0.228689 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.86223e-08 ( -2.21505e-08  1.20893e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.446 sec. to    0.554 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.72693   ( -4.72693   -4.72693 )
beta        : -2.66459    ( 2.66459   1.12771 )
Epeak [keV] : 31.0416      ( -31.0416 11.411 )
Norm@50keV   : 123.492    ( -42.9917   9.25214e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.11 using 59 PHA bins.
# Reduced chi-squared =         0.6383 for     55 degrees of freedom 
# Null hypothesis probability =   9.831904e-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]    : 8.91620  (-2.62354  4.20103)
R^2/D10^2   : 0.475032  (-0.474984   1.36469)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.07 using 59 PHA bins.
# Reduced chi-squared =         0.6328 for     57 degrees of freedom 
# Null hypothesis probability =   9.862897e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.316e-09   4.766e-09
25- 50  1.532e-08   9.835e-09
50-150  5.680e-09   4.503e-09
15-150  2.832e-08   1.850e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 70.0399       (-70.0375      -70.0375)
Norm        : 3.12982       (-1.39236     2.95189)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.81 using 59 PHA bins.
# Reduced chi-squared =         0.6283 for     57 degrees of freedom 
# Null hypothesis probability =   9.873992e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.030e-09   5.265e-09
25- 50  1.278e-08   7.980e-09
50-150  1.642e-08   1.458e-08
15-150  3.723e-08   2.599e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.820672        (-0.805498      12.2894)
R1^2/D10^2  : 3.09747E+06        (-5.86283e+06      -5.86283e+06)
kT2 [keV]   : 9.13315        (-2.7579      4.69158)
R2^2/D10^2  : 0.424885    (-0.341824   1.31888)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.87 using 59 PHA bins.
# Reduced chi-squared =         0.6523 for     55 degrees of freedom 
# Null hypothesis probability =   9.786339e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.150e-09   4.420e-09
25- 50  1.512e-08   9.875e-09
50-150  6.031e-09   4.592e-09
15-150  2.830e-08   1.820e-08
Plot creation:
Mon Jun 23 02:32:07 EDT 2014