batgrbproduct Analysis for Trigger=436094

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jan 17 15:43:22 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger436094
======================================================================

  Trigger: 00436094      Segment: 000

  BAT Trigger Time: 308509121.6   [s; MET]
      Trigger Stop: 308509122.624   [s; MET]
               UTC: 2010-10-11T16:58:35.338240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 48.2984265172764   Dec: -65.9859644209653  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.65
     Image Trigger?:     NO
     Rate S/N Ratio:     24.7991935352745  [ if not an image trigger ]
     Image S/N Ratio:    6.65

  Flight Position:   [ source = BAT ]
    RA: 48.2984265172764   Dec: -65.9859644209653  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 48.2852828611556   Dec: -65.989963225321  [deg; J2000]  
        { 03h 13m 08.5s , -65d 59' 23.9" }
         +/- 1.24735422319305 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.494052326765422 [arcmin] (formal 1-sigma fit error)
    SNR: 22.1814581302907
 
  Angular difference between Flight and Ground position is 0.400687 arcmin
 
  Partial Coding Fraction: 0.875    [ including projection effects ]

  Duration
     T90: 70.891999900341 +/- 18.643600613615
        Measured from: 0.38400000333786
                   to: 71.2759999036789     [s; relative to TRIGTIME]
     T50: 28.9079999923706 +/- 5.09016622077145
        Measured from: 4.32799994945526
                   to: 33.2359999418259     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.224000036716461     
                   to: 0.775999963283539     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.379999995231628     
                   to: 87.0719999670982     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.491277   0.710872   0.634676   0.290676
           0.050406   0.052072   0.047134   0.043235 [error]
 Peak      0.036096   0.066473   0.049111   0.015231
           0.006244   0.006647   0.006324   0.005628 [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 1.36e-07 2.95e-07 5.01e-07 1.96e-06 1.38e-06 2.89e-06   erg/cm2
              Error 2.07e-08 2.57e-08 4.62e-08 4.24e-07 1.16e-07 4.49e-07   erg/cm2
Peak flux Power-law 3.73e-01 4.30e-01 3.57e-01 4.98e-01 1.34e+00 1.66e+00   ph/cm2/s
              Error 7.60e-02 5.50e-02 5.01e-02 1.43e-01 1.57e-01 2.05e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.37e-07 2.95e-07 5.03e-07 1.80e-06 1.38e-06 2.74e-06   erg/cm2
              Error 2.06e-08 2.50e-08 4.61e-08 4.25e-07 1.12e-07 5.82e-07   erg/cm2
Peak flux Cutoff-PL 3.30e-01 4.66e-01 3.76e-01 2.11e-01 1.30e+00 1.38e+00   ph/cm2/s
              Error 8.83e-02 7.03e-02 5.74e-02 2.18e-01 1.64e-01 2.74e-01   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    1.234    0.143    -      -           1.57e-03 1.17e-04   51.870 57
CPL   1.226    0.145    9999.4    0.0      1.57e-03 4.15e-04   51.920 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.270    0.193    -      -           1.13e-02 1.32e-03   56.710 57
CPL   0.502    0.940      95.3  -31.7      2.82e-02 4.42e-02   54.200 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: 33.856000 sec.
T50 in the 50-300 keV band: 20.544000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   87.452   -0.380   87.072
T90    70.892    0.384   71.276
T50    28.908    4.328   33.236
Peak    1.000   -0.224    0.776
  • Click here for the BAT GCN circular template

    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
       48.2853   -65.9900   0.0087    25.1184     2.6194         1.1231964     22.181 TRIG_00436094                 
     
    Foreground time interval of the image:
     -0.380  18.701 (delta_t =  19.081 [sec])
    Background time interval of the image:
    -239.600  -0.380 (delta_t = 239.220 [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
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    8 ms binning

    From T100_start-3 s to T100_start+3 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    2 ms binning

    From T100_start-1 s to T100_start+1 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    SN=5 or 10 sec. binning (whichever binning is satisfied first)

    SN=5 or 10 sec. binning (T < 200 sec)

    Quad-rate summed light curves (from T0-300s to T0+1000s)

    The mask-weighted light curves based on cleaned DPHs

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -0.380 sec. to   87.072 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.23418     ( -0.143858   0.142007 )
    Norm@50keV  : 1.56571E-03    ( -0.000116875   0.000116875 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.87 using 59 PHA bins.
    # Reduced chi-squared =         0.9100 for     57 degrees of freedom 
    # Null hypothesis probability =   6.673021e-01
     
    Photon flux (15-150 keV)    in 87.45 sec: 0.184715 ( -0.0143461  0.0144015 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.3761e-06 ( -1.15203e-07  1.15931e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.380 sec. to   87.072 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.22645     ( -0.143756   0.14642 )
    Epeak [keV] : 9999.35      ( -9999.36 -9999.36 )
    Norm@50keV  : 1.57274E-03    ( -0.000414585   0.000414588 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.92 using 59 PHA bins.
    # Reduced chi-squared =         0.9272 for     56 degrees of freedom 
    # Null hypothesis probability =   6.299887e-01
     
    Photon flux (15-150 keV)    in 87.45 sec: 0.185083 ( -0.014858  0.014022 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.37699e-06 ( -1.15058e-07  1.09155e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.380 sec. to   87.072 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.997033   ( 0.997033   0.997033 )
    beta        : -1.23416    ( 1.23416   0.143837 )
    Epeak [keV] : 44.6691      ( -44.6691 -44.6691 )
    Norm@50keV   : 2.86958E-03    ( -0.00141998   0.225818 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.87 using 59 PHA bins.
    # Reduced chi-squared =         0.9431 for     55 degrees of freedom 
    # Null hypothesis probability =   5.948829e-01
     
    Photon flux (15-150 keV)    in 87.45 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]    : 19.4482  (  )
    R^2/D10^2   : 8.78227E-03  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         115.35 using 59 PHA bins.
    # Reduced chi-squared =         2.0238 for     57 degrees of freedom 
    # Null hypothesis probability =   7.758744e-06
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.661e-08   9.952e-09
    25- 50  2.767e-07   3.769e-08
    50-150  7.725e-07   1.125e-07
    15-150  1.106e-06   1.202e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 0.765610       (-0.0582279     0.0582209)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          69.38 using 59 PHA bins.
    # Reduced chi-squared =          1.217 for     57 degrees of freedom 
    # Null hypothesis probability =   1.257728e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.667e-07   1.596e-08
    25- 50  3.207e-07   6.073e-08
    50-150  7.032e-07   2.626e-07
    15-150  1.191e-06   2.272e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.90755        (-1.27522      1.45699)
    R1^2/D10^2  : 0.129846        (-0.0569354      0.110296)
    kT2 [keV]   : 45.4075        (-11.5185      27.057)
    R2^2/D10^2  : 5.75878E-04    (-0.000382909   0.000728591)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.94 using 59 PHA bins.
    # Reduced chi-squared =         0.8170 for     55 degrees of freedom 
    # Null hypothesis probability =   8.316307e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.395e-07   3.487e-08
    25- 50  3.045e-07   7.726e-08
    50-150  1.009e-06   4.690e-07
    15-150  1.453e-06   5.546e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   -0.224 sec. to    0.776 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.26971     ( -0.193715   0.192364 )
    Norm@50keV  : 1.12958E-02    ( -0.00132048   0.00131826 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.71 using 59 PHA bins.
    # Reduced chi-squared =         0.9949 for     57 degrees of freedom 
    # Null hypothesis probability =   4.860121e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.34038 ( -0.157056  0.157193 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.12471e-07 ( -1.47759e-08  1.49587e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.224 sec. to    0.776 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.501961     ( -1.06234   0.818017 )
    Epeak [keV] : 95.2868      ( -31.8083 -95.3032 )
    Norm@50keV  : 2.81722E-02    ( -0.0171978   0.0712612 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.20 using 59 PHA bins.
    # Reduced chi-squared =         0.9678 for     56 degrees of freedom 
    # Null hypothesis probability =   5.434173e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.30232 ( -0.16395  0.16306 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.04935e-07 ( -1.75157e-08  1.7278e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.224 sec. to    0.776 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 2.64820   ( -4.49417   -3.88884 )
    beta        : -1.65917    ( -0.401084   0.351111 )
    Epeak [keV] : 40.7833      ( -10.1717 68.2938 )
    Norm@50keV   : 3.14082    ( -3.13695   60.0434 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.92 using 59 PHA bins.
    # Reduced chi-squared =         0.9259 for     55 degrees of freedom 
    # Null hypothesis probability =   6.310874e-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]    : 15.3388  (-2.04449  2.52247)
    R^2/D10^2   : 0.149242  (-0.060616   0.0946749)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.02 using 59 PHA bins.
    # Reduced chi-squared =          1.088 for     57 degrees of freedom 
    # Null hypothesis probability =   3.019308e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.323e-09   1.501e-09
    25- 50  2.969e-08   5.875e-09
    50-150  4.801e-08   1.080e-08
    15-150  8.503e-08   1.321e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 5.50414       (-0.643608     0.643578)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.33 using 59 PHA bins.
    # Reduced chi-squared =          1.058 for     57 degrees of freedom 
    # Null hypothesis probability =   3.562611e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.371e-08   7.630e-09
    25- 50  2.637e-08   1.455e-08
    50-150  5.784e-08   3.191e-08
    15-150  9.792e-08   5.345e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 10.7417        (-2.99223      2.97023)
    R1^2/D10^2  : 0.376775        (-0.156207      0.346455)
    kT2 [keV]   : 47.2831        (-37.5199      -63.1534)
    R2^2/D10^2  : 2.42317E-03    (-0.000919521   0.0164439)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.35 using 59 PHA bins.
    # Reduced chi-squared =         0.9154 for     55 degrees of freedom 
    # Null hypothesis probability =   6.526707e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.654e-09   4.220e-09
    25- 50  2.918e-08   1.320e-08
    50-150  6.673e-08   3.665e-08
    15-150  1.056e-07   5.053e-08
    

    Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

    Power-law model
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.14896     ( -0.135456   0.133404 )
    Norm@50keV  : 3.74396E-03    ( -0.000275613   0.000275341 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.97 using 59 PHA bins.
    # Reduced chi-squared =         0.7889 for     57 degrees of freedom 
    # Null hypothesis probability =   8.757506e-01
     
    Photon flux (15-150 keV)    in 19.08 sec: 0.436570 ( -0.0333504  0.0334484 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.3561e-07 ( -5.94621e-08  5.97666e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.14419     ( -0.465276   0.200764 )
    Epeak [keV] : 9997.76      (   )
    Norm@50keV  : 3.76308E-03    ( -0.000275778   0.00272604 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.97 using 59 PHA bins.
    # Reduced chi-squared =         0.8030 for     56 degrees of freedom 
    # Null hypothesis probability =   8.545222e-01
     
    Photon flux (15-150 keV)    in 19.08 sec: 0.436384 ( -0.03501  0.033406 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.37627e-07 ( -6.61313e-08  5.79116e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.766116   ( 0.77085   5.65865 )
    beta        : -1.18527    ( 1.18455   0.167116 )
    Epeak [keV] : 115.932      ( -118.243 458.188 )
    Norm@50keV   : 6.37880E-03    ( -0.0028003   0 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.83 using 59 PHA bins.
    # Reduced chi-squared =         0.8151 for     55 degrees of freedom 
    # Null hypothesis probability =   8.345711e-01
     
    Photon flux (15-150 keV)    in 19.08 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 2.95e-07
    S(50-100 keV) = 5.01e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 70.891999900341 sec.
    Hardness ratio (energy fluence ratio) = 1.69831
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.44699
    Count Ratio (50-100 keV) / (15-25 keV) = 1.29189
    

    Mask shadow pattern

    IMX = 4.683360674006261E-01, IMY = -2.142568939790490E-02
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    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:
    -239.600000 -0.380000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5201 -40.5156    1.1  37.5 -112.4   4.4896  10.6    2.4	Vela X-1                      
     53.2018 -16.2062    3.0  40.4  102.2   2.8362   3.8 ------	UNKNOWN                       
     80.0402 -19.9951    2.3  28.5  143.8   1.1517   4.9 ------	UNKNOWN                       
     45.2319 -51.7653    2.5  24.2   37.3   0.9950   4.7 ------	UNKNOWN                       
    328.3336 -68.0764    2.8  53.8   -5.6   2.2186   4.1 ------	UNKNOWN                       
    183.7391 -73.3421    3.7  47.1  -53.1   3.0145   3.2 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.380000 18.700580
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5232 -40.5720    7.3  37.5 -112.3  -0.1578  -1.6    1.1	Vela X-1                      
     93.8144  -7.0829    2.5  42.4  165.6   0.3825   4.7 ------	UNKNOWN                       
     48.2853 -65.9900    0.5  25.1    2.6   1.1232  22.2 ------	UNKNOWN                       
    115.7693  -4.8611    2.0  51.7 -167.0   0.6883   5.8 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    64.900620 962.483400
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    311.9089 -56.6581    3.3  42.4   -3.6   2.7820   3.5 ------	UNKNOWN                       
     19.3936 -73.3889    2.9  12.3  -17.1   1.9552   4.0 ------	UNKNOWN                       
    293.6082 -51.8718    2.8  52.1  -12.4   5.2328   4.1 ------	UNKNOWN                       
    133.8233 -45.1504    2.6  47.9 -129.0  10.2366   4.5 ------	UNKNOWN                       
    
    Plot creation:
    Sat May 30 23:42:28 EDT 2015