Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time: Sat Nov  1 19:19:08 EDT 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger614390
======================================================================

  Trigger: 00614390      Segment: 000

  BAT Trigger Time: 434157667.008   [s; MET]
      Trigger Stop: 434157667.264   [s; MET]
               UTC: 2014-10-04T23:20:54.395160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 76.7295316221785   Dec: 12.8331117727635  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    19.75
     Image Trigger?:     NO
     Rate S/N Ratio:     90.9615303301346  [ if not an image trigger ]
     Image S/N Ratio:    19.75

  Analysis Position:   [ source = BAT ]
    RA: 76.7295316221785   Dec: 12.8331117727635  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 76.7209783333211   Dec: 12.8281031762749  [deg; J2000]  
        { 05h 06m 53.0s , +12d 49' 41.2" }
         +/- 0.81203804274426 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.24475894610725 [arcmin] (formal 1-sigma fit error)
    SNR: 40.9538736478094
 
  Angular difference between the analysis and refined position is 0.583689 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 3.92399996519089 +/- 1.11246033451304
        Measured from: -0.344000041484833
                   to: 3.57999992370605     [s; relative to TRIGTIME]
     T50: 1.13599997758865 +/- 0.173666344517265
        Measured from: 0.0959999561309814
                   to: 1.23199993371964     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0559999942779541     
                   to: 0.944000005722046     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.844000041484833     
                   to: 5.34399998188019     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.440711   0.479356   0.273024   0.062203
           0.016620   0.016964   0.014006   0.010899 [error]
 Peak      0.236965   0.299956   0.185618   0.035146
           0.008777   0.009491   0.007895   0.005138 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    6.188   -0.844    5.344
T90     3.924   -0.344    3.580
T50     1.136    0.096    1.232
Peak    1.000   -0.056    0.944
 
 
====== Spectral Analysis Summary =====================================
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^{Ph_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 both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedo
 
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -1.855    -0.083      0.082       -           -               -         1.17e-02     -5.62e-04          5.58e-04      59.500   57
CPL     -1.480    -0.329      0.358       64.362     -13.114       105.787      1.86e-02     -6.00e-03          9.94e-03      55.680   56
 
 
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -1.689     -0.069     0.069       -           -               -         4.63e-02     -1.89e-03          1.88e-03      77.410   57
CPL     -1.110     -0.290     0.313       75.331     -11.505        27.636      9.16e-02     -2.60e-02          3.98e-02      64.970   56
 
 
=== 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         PL   1.30e-07  1.92e-07  2.12e-07  4.42e-07  6.68e-07  9.76e-07   erg/cm2
      90%_error_low -9.29e-09 -8.47e-09 -1.38e-08 -5.79e-08 -3.20e-08 -7.05e-08   erg/cm2
      90%_error_hi   9.49e-09  8.46e-09  1.39e-08  6.36e-08  3.22e-08  7.47e-08   erg/cm2
Peak flux       PL   2.29e+00  2.06e+00  1.28e+00  1.21e+00  6.13e+00  6.83e+00   ph/cm2/s
      90%_error_low -1.53e-01 -8.59e-02 -6.56e-02 -1.21e-01 -2.51e-01 -2.67e-01   ph/cm2/s
      90%_error_hi   1.56e-01  8.57e-02  6.54e-02  1.29e-01  2.52e-01  2.67e-01   ph/cm2/s
 
Fluence        CPL    N/A      N/A      N/A      N/A      N/A      N/A      erg/cm2
      90%_error_low -9.29e-09 -8.47e-09 -1.38e-08 -5.79e-08 -3.20e-08 -7.05e-08   erg/cm2
      90%_error_hi   9.49e-09  8.46e-09  1.39e-08  6.36e-08  3.22e-08  7.47e-08   erg/cm2
Peak flux      CPL   2.06e+00  2.17e+00  1.33e+00  6.51e-01  5.95e+00  6.20e+00   ph/cm2/s
      90%_error_low -1.85e-01 -1.02e-01 -7.31e-02 -1.66e-01 -2.66e-01 -3.24e-01   ph/cm2/s
      90%_error_hi   1.88e-01  1.03e-01  7.38e-02  2.26e-01  2.66e-01  3.49e-01   ph/cm2/s
 
======================================================================
  • Special notes of this burst




    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   76.7210    12.8281   0.0047    13.2344   174.8520         1.2622871     40.954 TRIG_00614390                 
 
Foreground time interval of the image:
 -0.844   5.344 (delta_t =   6.188 [sec])
Background time interval of the image:
-102.307  -0.844 (delta_t = 101.463 [sec])




    Light Curves

    Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.

    Full-time range; 1 s binning

    Bokeh Plot

    Other quick-look light curves:




    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -0.844 sec. to    5.344 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.8545     ( -0.083047   0.0820631 )
Norm@50keV  : 1.17441E-02    ( -0.000561676   0.000558178 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.50 using 59 PHA bins.
# Reduced chi-squared =          1.044 for     57 degrees of freedom 
# Null hypothesis probability =   3.845653e-01
 
Photon flux (15-150 keV)    in 6.188 sec: 1.65387 ( -0.07514  0.07528 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.68285e-07 ( -3.20317e-08  3.22019e-08 ) ergs/cm2
    Cutoff power-law model
    Time interval is from   -0.844 sec. to    5.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.47992     ( -0.32865   0.357568 )
Epeak [keV] : 64.3615      ( -13.1139 105.787 )
Norm@50keV  : 1.85519E-02    ( -0.00600013   0.00994134 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.68 using 59 PHA bins.
# Reduced chi-squared =         0.9943 for     56 degrees of freedom 
# Null hypothesis probability =   4.869173e-01
 
Photon flux (15-150 keV)    in 6.188 sec: 1.61698 ( -0.08154  0.08157 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

    1-s peak spectrum fit

    Power-law model
    Time interval is from   -0.056 sec. to    0.944 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.68888     ( -0.0691102   0.0686357 )
Norm@50keV  : 4.63432E-02    ( -0.00188675   0.00188183 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.41 using 59 PHA bins.
# Reduced chi-squared =          1.358 for     57 degrees of freedom 
# Null hypothesis probability =   3.731664e-02
 
Photon flux (15-150 keV)    in 1 sec: 6.13143 ( -0.25124  0.25163 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.29536e-07 ( -1.82727e-08  1.83217e-08 ) ergs/cm2
    Cutoff power-law model
    Time interval is from   -0.056 sec. to    0.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.1096     ( -0.290378   0.312947 )
Epeak [keV] : 75.3308      ( -11.504 27.6374 )
Norm@50keV  : 9.16031E-02    ( -0.0259724   0.039839 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.97 using 59 PHA bins.
# Reduced chi-squared =          1.160 for     56 degrees of freedom 
# Null hypothesis probability =   1.925730e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.95252 ( -0.26565  0.26581 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

    Time-resolved spectra




    Distribution

    T90 vs. Hardness ratio plot 

    T90                                   = 3.924 sec.
Hardness ratio (energy fluence ratio) = 1.106164835

    S(15-50 keV) vs. S(50-150 keV) plot 

    S(15-50 keV)  = 3.214976e-07
S(50-150 keV) = 3.467858e-07

    The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.




    Mask shadow pattern 

    IMX = -2.342332408229152E-01, IMY = -2.110245017262507E-02

    Spacecraft aspect plot

    Bright source in the pre-burst/pre-slew/post-slew images

    Pre-burst image of 15-350 keV band 

    Time interval of the image:
-102.307400 -0.844000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6220  22.0127    0.3  22.7 -164.1   4.4190  36.9    0.6	Crab                          
 81.8001 -57.1749    2.8  57.0    3.0   2.9219   4.1 ------	UNKNOWN                       
 86.7492 -28.4196    2.4  29.2   -9.2   0.6427   4.8 ------	UNKNOWN                       
 96.1446 -53.5830    2.8  55.2   -7.5   1.6548   4.2 ------	UNKNOWN                       
 97.9350  -9.0938    2.3  20.8  -59.4   0.6692   5.1 ------	UNKNOWN                       
 99.2575   3.2066    2.7  20.5  -95.0   0.5522   4.3 ------	UNKNOWN

    Pre-slew background subtracted image of 15-350 keV band 

    Time interval of the image:
-0.844000 5.344000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6439  21.9987   11.8  22.7 -164.1  -0.0306  -1.0    1.1	Crab                          
 46.3326 -36.1499    2.5  47.0   41.4   0.6721   4.7 ------	UNKNOWN                       
 67.9811 -51.5055    2.3  52.1   13.5   0.6527   5.1 ------	UNKNOWN                       
 76.7210  12.8281    0.3  13.2  174.9   1.2622  41.0 ------	UNKNOWN                       
113.5932  -6.2034    2.3  35.0  -74.6   0.3041   5.1 ------	UNKNOWN

    Post-slew image of 15-350 keV band 

    Time interval of the image:
44.092590 963.001500
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6252  22.0121    0.2  11.3 -144.5  38.8168  61.8    0.5	Crab                          
 81.8024  30.7491    3.1  18.5 -165.2   2.1517   3.8 ------	UNKNOWN                       
101.1793  69.5536    3.6  58.8 -169.3  13.1223   3.2 ------	UNKNOWN