batgrbproduct analysis for trigger=445141

batgrbproduct Analysis for Trigger=445141

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): Tue Jan 14 00:17:05 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger445141
======================================================================

  Trigger: 00445141      Segment: 000

  BAT Trigger Time: 319024368   [s; MET]
      Trigger Stop: 319024432   [s; MET]
               UTC: 2011-02-10T09:52:41.350180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 13.0773027882465   Dec: 7.79171040387002  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.13
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.13

  Flight Position:   [ source = BAT ]
    RA: 13.0773027882465   Dec: 7.79171040387002  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 13.0773   Dec: 7.79171  [deg; J2000]
        { 00h 52m 18.6s , +07d 47' 30.2" }
        +/- 3.16435253472 [arcmin] (estimated 90% radius based on SNR)
    SNR: 5.86789776223
 
 
  Angular difference between Flight and Ground position is 0.000168 arcmin
 
  Partial Coding Fraction: 0.8359375    [ including projection effects ]

  Duration
     T90: 192.887999951839 +/- 42.1038400896004
        Measured from: -101.832000017166
                   to: 91.0559999346733     [s; relative to TRIGTIME]
     T50: 101.911999940872 +/- 38.3892937705216
        Measured from: -66.9959999918938
                   to: 34.9159999489784     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -54.3479999899864     
                   to: -53.3479999899864     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -107.255999982357     
                   to: 103.67199999094     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.483525   0.557015   0.387546   0.059963
           0.078082   0.082262   0.077614   0.080512 [error]
 Peak      0.017906   0.012840   0.010473   0.007439
           0.005419   0.005868   0.005384   0.005723 [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 1.58e-07 2.45e-07 2.87e-07 6.48e-07 8.80e-07 1.34e-06   erg/cm2
              Error 3.61e-08 3.79e-08 7.54e-08 3.50e-07 1.73e-07 4.25e-07   erg/cm2
Peak flux Power-law 1.57e-01 1.14e-01 5.45e-02 3.70e-02 3.42e-01 3.62e-01   ph/cm2/s
              Error 8.06e-02 4.81e-02 4.06e-02 5.88e-02 1.37e-01 1.52e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.57e-07 2.47e-07 2.87e-07 5.75e-07 8.76e-07 1.26e-06   erg/cm2
              Error 3.81e-08 4.54e-08 7.81e-08 4.24e-07 1.91e-07 5.42e-07   erg/cm2
Peak flux Cutoff-PL 1.51e-01 1.23e-01 5.16e-02 1.36e-02 3.36e-01 3.40e-01   ph/cm2/s
              Error 8.66e-02 6.22e-02 -------- 5.69e-02 1.37e-01 1.54e-01   ph/cm2/s
 
Fluence        Band 1.54e-07 2.51e-07 2.82e-07 5.96e-07 8.70e-07 1.31e-06   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    1.773    0.300    -      -           4.53e-04 8.57e-05   45.910 57
CPL   1.717    1.145     212.7   -0.0      4.87e-04 1.22e-03   45.900 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.058    0.869    -      -           2.22e-03 1.28e-03   63.450 57
CPL   1.407    4.132      34.7    0.0      5.60e-03 0.00e+00   63.320 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  210.928 -107.256  103.672
T90   192.888 -101.832   91.056
T50   101.912  -66.996   34.916
Peak    1.000  -54.348  -53.348

Click here for the BAT GCN circular template

Special notes of this burst

Image

Pre-slew 15.0-50.0 keV image (Event data)

#RAcent DECcent POSerr Theta  Phi  Peak_Cts  SNR Name
13.077 7.792 0.000 29.776 -7.890 0.383 5.868 TRIG_00445141
 
Image time interval: 0.000 to 64.000 [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 64.000000

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 64.000000

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 64.000000

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:

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 -107.256 sec. to  103.672 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.77314     ( -0.289678   0.309485 )
Norm@50keV  : 4.52730E-04    ( -8.73561e-05   8.41298e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.91 using 59 PHA bins.
# Reduced chi-squared =         0.8054 for     57 degrees of freedom 
# Null hypothesis probability =   8.534873e-01
 
Photon flux (15-150 keV)    in 210.9 sec: 6.17476E-02 ( -0.00952794  0.00952812 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.79974e-07 ( -1.70031e-07  1.76546e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from -107.256 sec. to  103.672 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71677     ( -1.24809   1.04277 )
Epeak [keV] : 212.684      ( -267.751 -267.762 )
Norm@50keV  : 4.87412E-04    ( -0.000478859   0.00196887 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.90 using 59 PHA bins.
# Reduced chi-squared =         0.8197 for     56 degrees of freedom 
# Null hypothesis probability =   8.299879e-01
 
Photon flux (15-150 keV)    in 210.9 sec: 6.16219E-02 ( -0.0097359  0.0095644 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.75589e-07 ( -2.02124e-07  1.79598e-07 ) ergs/cm2

Band function

Time interval is from -107.256 sec. to  103.672 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.28486   ( 1.27189   1.27189 )
beta        : -1.81322    ( 1.81317   0.324357 )
Epeak [keV] : 40.6874      ( -40.2791 -40.2791 )
Norm@50keV   : 1.00655E-03    ( -0.00109073   98539.1 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.81 using 59 PHA bins.
# Reduced chi-squared =         0.8329 for     55 degrees of freedom 
# Null hypothesis probability =   8.067599e-01
 
Photon flux (15-150 keV)    in 210.9 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.70462e-07 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.8286  (-2.22895  2.89082)
R^2/D10^2   : 2.11283E-02  (-0.0120062   0.0281811)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.89 using 59 PHA bins.
# Reduced chi-squared =          1.016 for     57 degrees of freedom 
# Null hypothesis probability =   4.423991e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.088e-07   3.412e-08
25- 50  3.015e-07   7.725e-08
50-150  1.973e-07   7.746e-08
15-150  6.076e-07   1.606e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 104.521       (-47.8915      -104.383)
Norm        : 0.269314       (-0.04805     0.072533)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.31 using 59 PHA bins.
# Reduced chi-squared =         0.8125 for     57 degrees of freedom 
# Null hypothesis probability =   8.433074e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.484e-07   3.979e-08
25- 50  2.589e-07   7.118e-08
50-150  4.301e-07   2.725e-07
15-150  8.374e-07   3.486e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.57485        (-1.96908      2.55402)
R1^2/D10^2  : 0.176787        (-0.127765      0.848476)
kT2 [keV]   : 21.9482        (-7.52936      28.4651)
R2^2/D10^2  : 1.24566E-03    (-0.00115484   0.00485278)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.45 using 59 PHA bins.
# Reduced chi-squared =         0.8264 for     55 degrees of freedom 
# Null hypothesis probability =   8.171546e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.609e-07   9.172e-08
25- 50  2.401e-07   1.244e-07
50-150  4.534e-07   2.736e-07
15-150  8.544e-07   4.566e-07

Peak spectrum fit

Power-law model

Time interval is from  -54.348 sec. to  -53.348 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.05822     ( -0.74197   0.995828 )
Norm@50keV  : 2.21954E-03    ( -0.00131735   0.00124895 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.45 using 59 PHA bins.
# Reduced chi-squared =          1.113 for     57 degrees of freedom 
# Null hypothesis probability =   2.596159e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.342163 ( -0.137282  0.137546 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.05466e-08 ( -1.02277e-08  1.17027e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  -54.348 sec. to  -53.348 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40679     ( -7.55291   0.710555 )
Epeak [keV] : 34.6582      (   )
Norm@50keV  : 5.60068E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.32 using 59 PHA bins.
# Reduced chi-squared =          1.131 for     56 degrees of freedom 
# Null hypothesis probability =   2.340206e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.335998 ( -0.134832  0.139745 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.90114e-08 ( -9.8145e-09  1.28559e-08 ) ergs/cm2

Band function

Time interval is from  -54.348 sec. to  -53.348 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.33963   ( -2.34174   -2.34174 )
beta        : -2.33816    ( 2.34069   0.966094 )
Epeak [keV] : 24.6210      ( -24.6952 34.6444 )
Norm@50keV   : 4.50826    ( -4.49542   249.518 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.23 using 59 PHA bins.
# Reduced chi-squared =          1.150 for     55 degrees of freedom 
# Null hypothesis probability =   2.086216e-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]    : 8.30045  (-3.53431  6.90242)
R^2/D10^2   : 0.326685  (-0.323609   2.60114)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.65 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     57 degrees of freedom 
# Null hypothesis probability =   2.271730e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.177e-09   2.645e-09
25- 50  7.787e-09   5.190e-09
50-150  2.305e-09   1.979e-09
15-150  1.427e-08   9.355e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 55.4076       (-55.4077      -55.4077)
Norm        : 1.87519       (-0.91295     2.46926)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.32 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     57 degrees of freedom 
# Null hypothesis probability =   2.633278e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.647e-09   2.931e-09
25- 50  6.896e-09   4.593e-09
50-150  7.330e-09   6.575e-09
15-150  1.887e-08   1.416e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.13361        (-5.19476      6.87505)
R1^2/D10^2  : 1.49222        (-1.47495      -1.47495)
kT2 [keV]   : 17.1982        (-17.3483      -17.3483)
R2^2/D10^2  : 1.30578E-02    (-0.0131472   1.22697)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.01 using 59 PHA bins.
# Reduced chi-squared =          1.146 for     55 degrees of freedom 
# Null hypothesis probability =   2.140172e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.812e-09   2.897e-09
25- 50  6.307e-09   3.873e-09
50-150  7.550e-09   5.575e-09
15-150  1.867e-08   1.024e-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: 1.74083     ( -0.311451   0.332844 )
Norm@50keV  : 4.71698E-04    ( -9.57e-05   9.17401e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.31 using 59 PHA bins.
# Reduced chi-squared =         0.8124 for     57 degrees of freedom 
# Null hypothesis probability =   8.433815e-01
 
Photon flux (15-150 keV)    in 179.8 sec: 6.35673E-02 ( -0.0104107  0.0104111 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.83006e-07 ( -1.60617e-07  1.66915e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.75179     ( -0.387735   0.326318 )
Epeak [keV] : 9999.36      ( -9999.35 -9999.36 )
Norm@50keV  : 4.68872E-04    ( -9.4196e-05   0.00146524 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.31 using 59 PHA bins.
# Reduced chi-squared =         0.8270 for     56 degrees of freedom 
# Null hypothesis probability =   8.186265e-01
 
Photon flux (15-150 keV)    in 179.8 sec: 6.35469E-02 ( -0.010405  0.0104052 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.80862e-07 ( -8.77028e-08  1.66538e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.36906   ( 1.38441   1.38441 )
beta        : -1.74035    ( 1.74081   0.311403 )
Epeak [keV] : 22.6313      ( -19.8566 -19.8566 )
Norm@50keV   : 1.11761E-03    ( -0.00113658   96997.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.31 using 59 PHA bins.
# Reduced chi-squared =         0.8420 for     55 degrees of freedom 
# Null hypothesis probability =   7.917442e-01
 
Photon flux (15-150 keV)    in 179.8 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)  = 2.45e-07
S(50-100 keV) = 2.87e-07

T90 vs. Hardness ratio plot

T90                                   = 192.887999951839 sec.
Hardness ratio (energy fluence ratio) = 1.17143

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.15199
Count Ratio (50-100 keV) / (15-25 keV) = 0.801501

Mask shadow pattern

IMX = 0.56673621053, IMY = 0.0785388118557

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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:
-239.000000 -107.256000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 64.3574 -32.2537    2.7  39.1  127.3   1.4686   4.3 ------	UNKNOWN                       
340.4508  -8.5047    3.2  42.2  -68.7   1.8578   3.6 ------	UNKNOWN

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

Time interval of the image:
-107.256000 72.500590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 13.1107   7.7701    1.8  29.7   -7.8   1.3288   6.3 ------	UNKNOWN                       
347.5114 -58.4102    2.9  45.5 -144.1   1.8534   4.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
125.700590 963.028200
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.1381  38.2733    3.8  52.0  -22.2   3.1850   3.0    3.3	Cyg X-2                       
 11.1861 -19.2905    2.3  27.1 -151.7   2.0512   5.0 ------	UNKNOWN

Plot creation:
Thu Nov 12 13:17:26 EST 2015