batgrbproduct analysis for trigger=355083

batgrbproduct Analysis for Trigger=355083

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 15:57:20 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger355083
======================================================================

  Trigger: 00355083      Segment: 000

  BAT Trigger Time: 267006514.688   [s; MET]
      Trigger Stop: 267006515.712   [s; MET]
               UTC: 2009-06-18T08:28:29.851180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 294.021186499589   Dec: 78.3535968964309  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    22.57
     Image Trigger?:     NO
     Rate S/N Ratio:     85.8370549354997  [ if not an image trigger ]
     Image S/N Ratio:    22.57

  Flight Position:   [ source = BAT ]
    RA: 294.021186499589   Dec: 78.3535968964309  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 294.00766435887   Dec: 78.3520481276482  [deg; J2000]  
        { 19h 36m 01.8s , +78d 21' 07.4" }
         +/- 0.455445070291291 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.134832402607741 [arcmin] (formal 1-sigma fit error)
    SNR: 93.5549871227227
 
  Angular difference between Flight and Ground position is 0.188319 arcmin
 
  Partial Coding Fraction: 0.625    [ including projection effects ]

  Duration
     T90: 113.340000003576 +/- 0.580344719513611
        Measured from: 10.4560000002384
                   to: 123.796000003815     [s; relative to TRIGTIME]
     T50: 28.0560000240803 +/- 0.160648699669277
        Measured from: 61.0600000023842
                   to: 89.1160000264645     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 65.3840000033379     
                   to: 66.3840000033379     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.99599999189377     
                   to: 213.636000007391     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    50.101114  66.303208  48.856144  11.948221
           0.127355   0.144137   0.131336   0.090757 [error]
 Peak      1.092692   1.691382   1.442514   0.409953
           0.017676   0.021547   0.020909   0.013899 [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 1.60e-05 2.80e-05 3.76e-05 1.03e-04 1.09e-04 1.85e-04   erg/cm2
              Error 4.19e-07 4.54e-07 3.74e-07 2.23e-06 1.18e-06 2.22e-06   erg/cm2
Peak flux Power-law 1.16e+01 1.27e+01 9.86e+00 1.26e+01 3.88e+01 4.67e+01   ph/cm2/s
              Error 4.65e-01 3.02e-01 1.96e-01 5.58e-01 8.09e-01 8.46e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.54e-05 2.80e-05 3.80e-05 9.62e-05 1.09e-04 1.78e-04   erg/cm2
              Error 6.24e-07 4.65e-07 4.95e-07 4.66e-06 1.21e-06 4.97e-06   erg/cm2
Peak flux Cutoff-PL 1.11e+01 1.27e+01 1.00e+01 1.13e+01 3.85e+01 4.51e+01   ph/cm2/s
              Error 6.29e-01 3.07e-01 2.47e-01 1.35e+00 8.93e-01 1.54e+00   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    1.578    0.019    -      -           5.33e-02 6.36e-04   27.850 57
CPL   1.488    0.078     399.8  927.2      5.73e-02 3.44e-03   23.990 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.361    0.034    -      -           3.22e-01 5.91e-03   38.410 57
CPL   1.235    0.136     364.0 -103.0      3.63e-01 4.53e-02   35.900 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: 107.776000 sec.
T50 in the 50-300 keV band: 23.552000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  218.632   -4.996  213.636
T90   113.340   10.456  123.796
T50    28.056   61.060   89.116
Peak    1.000   65.384   66.384

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
  294.0077    78.3520   0.0021    31.1272    23.5813        29.6068669     93.555 TRIG_00355083                 
 
Foreground time interval of the image:
 -4.996  54.613 (delta_t =  59.609 [sec])
Background time interval of the image:
-362.587 -252.614 (delta_t = 109.974 [sec])
-239.688  -4.996 (delta_t = 234.692 [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   -4.996 sec. to  213.636 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57764     ( -0.0187817   0.018694 )
Norm@50keV  : 5.32807E-02    ( -0.000637106   0.000635569 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          27.85 using 59 PHA bins.
# Reduced chi-squared =         0.4886 for     57 degrees of freedom 
# Null hypothesis probability =   9.995971e-01
 
Photon flux (15-150 keV)    in 218.6 sec: 6.80025 ( -0.10701  0.107531 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0.000109234 ( -1.17706e-06  1.17792e-06 ) ergs/cm2

Cutoff power-law model

Time interval is from   -4.996 sec. to  213.636 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48819     ( -0.0784681   0.077255 )
Epeak [keV] : 399.809      ( -152.015 1702.47 )
Norm@50keV  : 5.73299E-02    ( -0.00316093   0.00372195 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          23.99 using 59 PHA bins.
# Reduced chi-squared =         0.4283 for     56 degrees of freedom 
# Null hypothesis probability =   9.999446e-01
 
Photon flux (15-150 keV)    in 218.6 sec: 6.71690 ( -0.12618  0.11729 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0.000108942 ( -1.20951e-06  1.21104e-06 ) ergs/cm2

Band function

Time interval is from   -4.996 sec. to  213.636 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.48819   ( -0.650459   1.03657 )
beta        : -10.00000    ( 10   20 )
Epeak [keV] : 399.763      ( -68.8182 1708.68 )
Norm@50keV   : 5.73195E-02    ( -0.00347064   0.00372936 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          23.99 using 59 PHA bins.
# Reduced chi-squared =         0.4361 for     55 degrees of freedom 
# Null hypothesis probability =   9.999141e-01
 
Photon flux (15-150 keV)    in 218.6 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]    : 22.8013  (  )
R^2/D10^2   : 0.161091  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =        2210.74 using 59 PHA bins.
# Reduced chi-squared =        38.7850 for     57 degrees of freedom 
# Null hypothesis probability =   0.000000e+00
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.332e-06   8.198e-08
25- 50  1.799e-05   3.366e-07
50-150  6.987e-05   7.542e-07
15-150  9.119e-05   9.946e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 28.1271       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         141.90 using 59 PHA bins.
# Reduced chi-squared =         2.4895 for     57 degrees of freedom 
# Null hypothesis probability =   3.435822e-09
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.531e-05   2.131e-07
25- 50  2.945e-05   4.591e-07
50-150  6.459e-05   9.946e-07
15-150  1.094e-04   1.738e-06

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.37669        (-0.319087      0.329959)
R1^2/D10^2  : 3.80071        (-0.511887      0.605259)
kT2 [keV]   : 32.3119        (-0.926021      1.01922)
R2^2/D10^2  : 3.86165E-02    (-0.00425818   0.00450643)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.42 using 59 PHA bins.
# Reduced chi-squared =         0.8622 for     55 degrees of freedom 
# Null hypothesis probability =   7.563597e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.220e-05   5.640e-07
25- 50  2.896e-05   5.793e-07
50-150  6.593e-05   8.853e-07
15-150  1.071e-04   1.301e-06

Peak spectrum fit

Power-law model

Time interval is from   65.384 sec. to   66.384 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36072     ( -0.0341962   0.0341517 )
Norm@50keV  : 0.321643    ( -0.00590765   0.00590435 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.41 using 59 PHA bins.
# Reduced chi-squared =         0.6738 for     57 degrees of freedom 
# Null hypothesis probability =   9.721531e-01
 
Photon flux (15-150 keV)    in 1 sec: 38.8352 ( -0.807925  0.810108 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.13394e-06 ( -5.83118e-08  5.8334e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   65.384 sec. to   66.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23532     ( -0.138308   0.133657 )
Epeak [keV] : 364.033      ( -158.556 -364.48 )
Norm@50keV  : 0.363487    ( -0.0394539   0.0510548 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.90 using 59 PHA bins.
# Reduced chi-squared =         0.6410 for     56 degrees of freedom 
# Null hypothesis probability =   9.832452e-01
 
Photon flux (15-150 keV)    in 1 sec: 38.4599 ( -0.8908  0.8954 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.11778e-06 ( 0  0 ) ergs/cm2

Band function

Time interval is from   65.384 sec. to   66.384 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.744610   ( -0.463089   2.39569 )
beta        : -1.41127    ( -0.0629695   0.0523968 )
Epeak [keV] : 80.0200      ( -44.3104 107.944 )
Norm@50keV   : 0.713819    ( -0.376257   8.60639 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.92 using 59 PHA bins.
# Reduced chi-squared =         0.5986 for     55 degrees of freedom 
# Null hypothesis probability =   9.921007e-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]    : 19.4129  (  )
R^2/D10^2   : 1.83452  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         643.36 using 59 PHA bins.
# Reduced chi-squared =         11.287 for     57 degrees of freedom 
# Null hypothesis probability =  3.393086e-100
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.348e-07   5.100e-09
25- 50  6.582e-07   1.700e-08
50-150  1.830e-06   5.150e-08
15-150  2.623e-06   5.650e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 165.223       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         173.98 using 59 PHA bins.
# Reduced chi-squared =         3.0523 for     57 degrees of freedom 
# Null hypothesis probability =   9.108640e-14
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.114e-07   9.000e-09
25- 50  7.914e-07   1.670e-08
50-150  1.736e-06   3.400e-08
15-150  2.939e-06   6.100e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.73962        (-0.628975      0.660009)
R1^2/D10^2  : 17.2037        (-3.5195      4.73938)
kT2 [keV]   : 34.0650        (-2.56207      3.23601)
R2^2/D10^2  : 0.224895    (-0.0588275   0.0696341)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.18 using 59 PHA bins.
# Reduced chi-squared =         0.8034 for     55 degrees of freedom 
# Null hypothesis probability =   8.515516e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.894e-07   1.880e-08
25- 50  7.546e-07   2.635e-08
50-150  2.058e-06   9.100e-08
15-150  3.102e-06   1.095e-07

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: 1.39960     ( -0.0248489   0.02477 )
Norm@50keV  : 3.38082E-02    ( -0.000471727   0.000470913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          29.77 using 59 PHA bins.
# Reduced chi-squared =         0.5222 for     57 degrees of freedom 
# Null hypothesis probability =   9.989109e-01
 
Photon flux (15-150 keV)    in 59.61 sec: 4.11684 ( -0.0693223  0.0695952 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.94748e-05 ( -2.51791e-07  2.5179e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29580     ( -0.102228   0.0939468 )
Epeak [keV] : 435.695      ( -182.049 5317.18 )
Norm@50keV  : 3.71101E-02    ( -0.00166376   0.00347786 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          26.66 using 59 PHA bins.
# Reduced chi-squared =         0.4761 for     56 degrees of freedom 
# Null hypothesis probability =   9.996975e-01
 
Photon flux (15-150 keV)    in 59.61 sec: 4.07448 ( -0.07902  0.079 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.94099e-05 ( -2.61688e-07  2.61628e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.474632   ( -1.09366   4.4097 )
beta        : -1.41714    ( 1.41714   0.0310595 )
Epeak [keV] : 52.7235      ( -22.0605 167.257 )
Norm@50keV   : 0.131032    ( -0.077641   1206.51 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          26.08 using 59 PHA bins.
# Reduced chi-squared =         0.4742 for     55 degrees of freedom 
# Null hypothesis probability =   9.996803e-01
 
Photon flux (15-150 keV)    in 59.61 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)  = 2.80e-05
S(50-100 keV) = 3.76e-05

T90 vs. Hardness ratio plot

T90                                   = 113.340000003576 sec.
Hardness ratio (energy fluence ratio) = 1.34286

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.32339
Count Ratio (50-100 keV) / (15-25 keV) = 0.975151

Mask shadow pattern

IMX = 5.534584737764761E-01, IMY = -2.415850342435254E-01

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:
-362.587390 -252.613800
-239.688000 -4.996000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
293.9911  78.3562    2.1  31.1   23.6   1.3560   5.4 ------	UNKNOWN                       
 77.6566  45.7715    2.4  41.6  -75.0   4.4677   4.8 ------	UNKNOWN

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

Time interval of the image:
-4.996000 54.612600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
261.5602  73.9294    2.4  30.7   40.7   1.5811   4.8 ------	UNKNOWN                       
294.0077  78.3520    0.1  31.1   23.6  29.6050  93.5 ------	UNKNOWN                       
 18.5018  74.5929    2.3  33.0  -11.1   1.3515   5.0 ------	UNKNOWN                       
 77.6977  69.0237    3.3  24.2  -45.6   0.8889   3.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
109.612600 962.451700
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
308.0556  41.0438    4.4  37.7   47.5   2.4474   2.6    6.0	Cyg X-3                       
326.0976  38.2683    4.9  42.2   26.5   2.2811   2.3    4.7	Cyg X-2                       
245.7377  42.6655    2.8  40.3  122.9   7.0614   4.1 ------	UNKNOWN                       
284.8316  55.2961    2.5  23.3   78.2   2.6940   4.6 ------	UNKNOWN                       
204.0795  36.5231    2.3  54.4  163.3  13.6347   5.1 ------	UNKNOWN                       
294.0328  78.3342    0.2   0.0   97.4  24.9643  51.5 ------	UNKNOWN

Plot creation:
Sun May 31 03:46:49 EDT 2015