batgrbproduct analysis for trigger=348929

batgrbproduct Analysis for Trigger=348929

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jan 19 17:53:54 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger348929
======================================================================

  Trigger: 00348929      Segment: 000

  BAT Trigger Time: 261075477.504   [s; MET]
      Trigger Stop: 261075478.528   [s; MET]
               UTC: 2009-04-10T16:57:52.856200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 334.979821390126   Dec: 15.4711522547987  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.82
     Image Trigger?:     NO
     Rate S/N Ratio:     12.2065556157337  [ if not an image trigger ]
     Image S/N Ratio:    7.82

  Flight Position:   [ source = BAT ]
    RA: 334.979821390126   Dec: 15.4711522547987  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 334.958160889292   Dec: 15.4213946333319  [deg; J2000]  
        { 22h 19m 50.0s , +15d 25' 17.0" }
         +/- 1.73116817149227 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.59162943211542 [arcmin] (formal 1-sigma fit error)
    SNR: 13.8878086686614
 
  Angular difference between Flight and Ground position is 3.237620 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 165.148000001907 +/- 7.04306410648481
        Measured from: -35.5640000104904
                   to: 129.583999991417     [s; relative to TRIGTIME]
     T50: 99.2120000123978 +/- 2.28861880219093
        Measured from: 7.75999999046326
                   to: 106.972000002861     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.92399999499321     
                   to: 9.92399999499321     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -49.2240000069141     
                   to: 139.444000005722     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.805094   2.950542   2.930605   0.816166
           0.068758   0.072294   0.065223   0.055348 [error]
 Peak      0.038001   0.074839   0.114173   0.053884
           0.005364   0.006150   0.006601   0.005258 [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 4.97e-07 1.16e-06 2.16e-06 9.62e-06 5.85e-06 1.34e-05   erg/cm2
              Error 2.97e-08 4.01e-08 6.45e-08 6.97e-07 1.67e-07 7.21e-07   erg/cm2
Peak flux Power-law 2.91e-01 5.03e-01 6.64e-01 1.78e+00 1.94e+00 3.24e+00   ph/cm2/s
              Error 4.96e-02 5.21e-02 4.79e-02 2.90e-01 1.41e-01 2.96e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.83e-07 1.17e-06 2.18e-06 8.44e-06 5.82e-06 1.23e-05   erg/cm2
              Error 2.94e-08 4.16e-08 7.70e-08 1.70e-06 1.77e-07 1.80e-06   erg/cm2
Peak flux Cutoff-PL 2.45e-01 5.03e-01 7.06e-01 1.18e+00 1.91e+00 2.63e+00   ph/cm2/s
              Error 6.93e-02 5.57e-02 6.80e-02 5.08e-01 1.45e-01 4.10e-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    1.108    0.051    -      -           2.97e-03 8.13e-05   58.050 57
CPL   1.008    0.162     587.1    0.0      3.28e-03 4.61e-04   57.320 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.600    0.131    -      -           1.66e-02 1.29e-03   68.270 57
CPL   0.108    0.559     249.3  -72.1      2.58e-02 1.40e-02   66.100 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: 161.664000 sec.
T50 in the 50-300 keV band: 89.024000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  188.668  -49.224  139.444
T90   165.148  -35.564  129.584
T50    99.212    7.760  106.972
Peak    1.000    8.924    9.924

Click here for the BAT GCN circular template

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
  334.9582    15.4214   0.0139     4.3758   -57.1327         9.1245321     13.888 TRIG_00348929                 
 
Foreground time interval of the image:
-49.224 139.444 (delta_t = 188.668 [sec])
Background time interval of the image:
-56.003 -49.224 (delta_t =   6.779 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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)

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from  -49.224 sec. to  139.444 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10782     ( -0.0513474   0.051019 )
Norm@50keV  : 2.97314E-03    ( -8.14167e-05   8.12379e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.05 using 59 PHA bins.
# Reduced chi-squared =          1.018 for     57 degrees of freedom 
# Null hypothesis probability =   4.362448e-01
 
Photon flux (15-150 keV)    in 188.7 sec: 0.345130 ( -0.00996123  0.0099827 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.85115e-06 ( -1.67053e-07  1.6731e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -49.224 sec. to  139.444 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00831     ( -0.205213   0.119694 )
Epeak [keV] : 587.096      ( -587.203 -587.203 )
Norm@50keV  : 3.28010E-03    ( -0.000210288   0.000712498 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.32 using 59 PHA bins.
# Reduced chi-squared =          1.024 for     56 degrees of freedom 
# Null hypothesis probability =   4.259435e-01
 
Photon flux (15-150 keV)    in 188.7 sec: 0.342934 ( -0.010795  0.009522 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.82277e-06 ( -1.79114e-07  1.75302e-07 ) ergs/cm2

Band function

Time interval is from  -49.224 sec. to  139.444 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.107931   ( -1.17781   -1.17781 )
beta        : -1.12942    ( 1.12746   0.0599837 )
Epeak [keV] : 48.4019      ( -48.361 211.81 )
Norm@50keV   : 2.07925E-02    ( -0.0208926   99.8701 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.69 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     55 degrees of freedom 
# Null hypothesis probability =   4.118282e-01
 
Photon flux (15-150 keV)    in 188.7 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]    : 21.7840  (  )
R^2/D10^2   : 1.20862E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         282.35 using 59 PHA bins.
# Reduced chi-squared =         4.9535 for     57 degrees of freedom 
# Null hypothesis probability =   1.386179e-31
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.012e-07   1.169e-08
25- 50  1.058e-06   4.387e-08
50-150  3.749e-06   1.642e-07
15-150  5.008e-06   1.679e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 1.47016       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         285.26 using 59 PHA bins.
# Reduced chi-squared =         5.0045 for     57 degrees of freedom 
# Null hypothesis probability =   4.277943e-32
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.908e-07   1.972e-08
25- 50  1.329e-06   3.925e-08
50-150  2.914e-06   8.208e-08
15-150  4.934e-06   1.500e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.03421        (-0.977216      1.12753)
R1^2/D10^2  : 0.167428        (-0.0560671      0.0901574)
kT2 [keV]   : 33.5409        (-3.2356      4.62284)
R2^2/D10^2  : 2.67251E-03    (-0.000900723   0.00105517)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.27 using 59 PHA bins.
# Reduced chi-squared =          1.132 for     55 degrees of freedom 
# Null hypothesis probability =   2.332614e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.526e-07   4.916e-08
25- 50  1.185e-06   8.435e-08
50-150  4.190e-06   2.595e-07
15-150  5.827e-06   3.595e-07

Peak spectrum fit

Power-law model

Time interval is from    8.924 sec. to    9.924 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.599732     ( -0.132956   0.128736 )
Norm@50keV  : 1.66179E-02    ( -0.00130102   0.00128533 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.27 using 59 PHA bins.
# Reduced chi-squared =          1.198 for     57 degrees of freedom 
# Null hypothesis probability =   1.457640e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.94030 ( -0.140635  0.140813 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.12537e-07 ( -1.62634e-08  1.6306e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    8.924 sec. to    9.924 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.108394     ( -0.660528   0.457431 )
Epeak [keV] : 249.321      ( -105.121 -249.318 )
Norm@50keV  : 2.57808E-02    ( -0.00894895   0.0190861 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.10 using 59 PHA bins.
# Reduced chi-squared =          1.180 for     56 degrees of freedom 
# Null hypothesis probability =   1.674709e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.90945 ( -0.14569  0.14524 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.1036e-07 ( -1.6876e-08  1.6774e-08 ) ergs/cm2

Band function

Time interval is from    8.924 sec. to    9.924 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.987682   ( 0.987678   0.987678 )
beta        : -0.599735    ( -0.128789   0.132921 )
Epeak [keV] : 15.5675      ( -15.5717 -15.5717 )
Norm@50keV   : 2.28717E-02    ( -0.0075086   285111 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.27 using 59 PHA bins.
# Reduced chi-squared =          1.241 for     55 degrees of freedom 
# Null hypothesis probability =   1.077784e-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]    : 29.8583  (-2.91292  3.49703)
R^2/D10^2   : 3.13434E-02  (-0.00827461   0.0105548)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.66 using 59 PHA bins.
# Reduced chi-squared =          1.327 for     57 degrees of freedom 
# Null hypothesis probability =   4.972526e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.384e-09   6.520e-10
25- 50  2.699e-08   3.390e-09
50-150  1.703e-07   1.755e-08
15-150  2.017e-07   1.835e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 7.00957       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         205.69 using 59 PHA bins.
# Reduced chi-squared =         3.6086 for     57 degrees of freedom 
# Null hypothesis probability =   1.107211e-18
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.745e-08   1.595e-09
25- 50  3.358e-08   8.715e-09
50-150  7.364e-08   3.587e-08
15-150  1.247e-07   4.252e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.43671        (-2.09597      3.90161)
R1^2/D10^2  : 4.00964        (-3.65714      72.7457)
kT2 [keV]   : 33.1445        (-3.99543      6.09471)
R2^2/D10^2  : 2.26957E-02    (-0.0087564   0.00994307)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.84 using 59 PHA bins.
# Reduced chi-squared =          1.143 for     55 degrees of freedom 
# Null hypothesis probability =   2.183892e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.556e-09   3.980e-09
25- 50  2.631e-08   4.380e-09
50-150  1.741e-07   2.130e-08
15-150  2.100e-07   2.710e-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: 1.10782     ( -0.0513474   0.051019 )
Norm@50keV  : 2.97314E-03    ( -8.14167e-05   8.12379e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.05 using 59 PHA bins.
# Reduced chi-squared =          1.018 for     57 degrees of freedom 
# Null hypothesis probability =   4.362448e-01
 
Photon flux (15-150 keV)    in 188.7 sec: 0.345130 ( -0.00996123  0.0099827 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.85115e-06 ( -1.67053e-07  1.6731e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00831     ( -0.205213   0.119694 )
Epeak [keV] : 587.096      ( -587.203 -587.203 )
Norm@50keV  : 3.28010E-03    ( -0.000210288   0.000712498 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.32 using 59 PHA bins.
# Reduced chi-squared =          1.024 for     56 degrees of freedom 
# Null hypothesis probability =   4.259435e-01
 
Photon flux (15-150 keV)    in 188.7 sec: 0.342934 ( -0.010795  0.009522 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.82277e-06 ( -1.79114e-07  1.75302e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.107931   ( -1.17781   -1.17781 )
beta        : -1.12942    ( 1.12746   0.0599837 )
Epeak [keV] : 48.4019      ( -48.361 208.21 )
Norm@50keV   : 2.07925E-02    ( -0.0208926   99.87 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.69 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     55 degrees of freedom 
# Null hypothesis probability =   4.118282e-01
 
Photon flux (15-150 keV)    in 188.7 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)  = 1.16e-06
S(50-100 keV) = 2.16e-06

T90 vs. Hardness ratio plot

T90                                   = 165.148000001907 sec.
Hardness ratio (energy fluence ratio) = 1.86207

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.63456
Count Ratio (50-100 keV) / (15-25 keV) = 1.62352

Mask shadow pattern

IMX = 4.152756654939097E-02, IMY = 6.427216593654615E-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:
-56.003410 -49.224000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6276  35.1648    2.7  32.9  134.8   0.1806   4.3    2.9	Cyg X-1                       
307.9703  40.8195   10.9  30.6  150.7   0.0335   1.1   10.2	Cyg X-3                       
326.3411  38.3808   54.7  21.3  176.2   0.0050   0.2    8.7	Cyg X-2                       
  9.5536 -15.4761    2.2  50.4  -45.4   0.6296   5.3 ------	UNKNOWN

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

Time interval of the image:
-49.224000 139.444000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.4474  35.2523    5.9  33.1  134.8   2.3890   2.0    7.6	Cyg X-1                       
308.2316  41.1436    0.0  30.7  151.4   1.1494   1.3   12.7	Cyg X-3                       
325.9834  38.3675   36.3  21.4  175.4   0.2152   0.3    9.3	Cyg X-2                       
334.9581  15.4214    0.8   4.4  -57.1   9.1258  13.9 ------	UNKNOWN                       
335.0852  17.8845    2.2   4.0  -91.0   3.2955   5.2 ------	UNKNOWN                       
355.4365  23.8564    2.3  23.8 -103.7   3.7817   5.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
489.696590 962.579300
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6342  22.0204    0.3  37.5   13.8  19.7073  36.4    0.4	Crab                          
 20.2505 -60.2422    3.2  59.4 -163.2  11.0872   3.7 ------	UNKNOWN

Plot creation:
Sun May 31 04:30:40 EDT 2015