batgrbproduct analysis for trigger=146129

batgrbproduct Analysis for Trigger=146129

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): Wed Jan 22 21:32:50 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger146129
======================================================================

  Trigger: 00146129      Segment: 000

  BAT Trigger Time: 143159426.048   [s; MET]
      Trigger Stop: 143159430.144   [s; MET]
               UTC: 2005-07-15T22:30:26.424240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 155.669314942153   Dec: -0.0590341924076137  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.08
     Image Trigger?:     NO
     Rate S/N Ratio:     11.8321595661992  [ if not an image trigger ]
     Image S/N Ratio:    9.08

  Flight Position:   [ source = BAT ]
    RA: 155.669314942153   Dec: -0.0590341924076137  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 155.64228118609   Dec: -0.0267825690351626  [deg; J2000]  
        { 10h 22m 34.1s , -00d 01' 36.4" }
         +/- 1.3668130249648 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.627240573879364 [arcmin] (formal 1-sigma fit error)
    SNR: 19.46472286326
 
  Angular difference between Flight and Ground position is 2.524988 arcmin
 
  Partial Coding Fraction: 0.734375    [ including projection effects ]

  Duration
     T90: 187 +/- 21.5870331449229
        Measured from: -138.048000007868
                   to: 48.9519999921322     [s; relative to TRIGTIME]
     T50: 44 +/- 69.1158447825099
        Measured from: -5.04800000786781
                   to: 38.9519999921322     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 39.9519999921322     
                   to: 40.9519999921322     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -152.048000007868     
                   to: 54.9519999921322     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.995077   1.113695   0.723864   0.216974
           0.073628   0.076948   0.068437   0.063416 [error]
 Peak      0.040132   0.043785   0.025482  -0.000746
           0.005668   0.005823   0.005330   0.004441 [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 2.79e-07 4.66e-07 5.90e-07 1.50e-06 1.75e-06 2.83e-06   erg/cm2
              Error 3.54e-08 3.60e-08 6.91e-08 3.73e-07 1.60e-07 4.31e-07   erg/cm2
Peak flux Power-law 3.44e-01 2.93e-01 1.71e-01 1.48e-01 8.72e-01 9.56e-01   ph/cm2/s
              Error 7.86e-02 4.61e-02 4.26e-02 7.14e-02 1.37e-01 1.56e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.80e-07 4.66e-07 5.87e-07 1.48e-06 1.74e-06 2.70e-06   erg/cm2
              Error 3.50e-08 3.57e-08 6.90e-08 4.29e-07 1.58e-07 5.83e-07   erg/cm2
Peak flux Cutoff-PL 3.23e-01 3.17e-01 1.69e-01 6.20e-02 8.51e-01 8.71e-01   ph/cm2/s
              Error 8.73e-02 6.09e-02 4.92e-02 1.05e-01 1.41e-01 1.79e-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    1.658    0.147    -      -           9.10e-04 7.69e-05   40.830 57
CPL   2.177    0.000      67.8    0.0      4.93e-04 0.00e+00   40.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.781    0.286    -      -           6.37e-03 1.21e-03   71.130 57
CPL   1.135    1.217      56.6   -3.8      1.50e-02 4.68e-02   70.060 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: 56.064000 sec.
T50 in the 50-300 keV band: 35.264000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  207.000 -152.048   54.952
T90   187.000 -138.048   48.952
T50    44.000   -5.048   38.952
Peak    1.000   39.952   40.952

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
  155.6423    -0.0268   0.0099    20.7989   -76.4775         2.4420073     19.465 TRIG_00146129                 
 
Foreground time interval of the image:
-73.147  54.952 (delta_t = 128.099 [sec])
Background time interval of the image:

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 4.096000

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 4.096000

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 4.096000

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 -152.048 sec. to   54.952 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65796     ( -0.145915   0.148025 )
Norm@50keV  : 9.10084E-04    ( -7.7398e-05   7.63475e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.83 using 59 PHA bins.
# Reduced chi-squared =         0.7163 for     57 degrees of freedom 
# Null hypothesis probability =   9.477576e-01
 
Photon flux (15-150 keV)    in 207 sec: 0.119148 ( -0.0091893  0.00920098 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7507e-06 ( -1.58929e-07  1.61069e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from -152.048 sec. to   54.952 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.17739     (     )
Epeak [keV] : 67.8447      (   )
Norm@50keV  : 4.92641E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.57 using 59 PHA bins.
# Reduced chi-squared =         0.7244 for     56 degrees of freedom 
# Null hypothesis probability =   9.399632e-01
 
Photon flux (15-150 keV)    in 207 sec: 0.119237 ( -0.004663  0.009092 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74067e-06 ( -1.49957e-07  1.66395e-07 ) ergs/cm2

Band function

Time interval is from -152.048 sec. to   54.952 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.42830   ( -4.4283   -4.4283 )
beta        : -1.69125    ( -0.163049   0.15542 )
Epeak [keV] : 20.2862      ( -20.2862 23.1233 )
Norm@50keV   : 139.748    ( -10.6418   612609 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.49 using 59 PHA bins.
# Reduced chi-squared =         0.7362 for     55 degrees of freedom 
# Null hypothesis probability =   9.282270e-01
 
Photon flux (15-150 keV)    in 207 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]    : 11.7803  (-1.22975  1.42909)
R^2/D10^2   : 2.98039E-02  (-0.010155   0.0149462)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          94.70 using 59 PHA bins.
# Reduced chi-squared =          1.661 for     57 degrees of freedom 
# Null hypothesis probability =   1.264006e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.808e-07   2.502e-08
25- 50  5.565e-07   5.216e-08
50-150  4.586e-07   9.460e-08
15-150  1.196e-06   1.206e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 159.907       (-57.329      -158.741)
Norm        : 0.484212       (-0.0404144     0.054001)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.43 using 59 PHA bins.
# Reduced chi-squared =         0.7794 for     57 degrees of freedom 
# Null hypothesis probability =   8.875745e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.560e-07   3.084e-08
25- 50  4.787e-07   1.085e-07
50-150  9.697e-07   4.730e-07
15-150  1.704e-06   5.867e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.64661        (-1.37876      1.46294)
R1^2/D10^2  : 0.118970        (-0.0533512      0.115506)
kT2 [keV]   : 47.0334        (-19.2994      -47.181)
R2^2/D10^2  : 2.36271E-04    (-0.000186789   0.000859177)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.88 using 59 PHA bins.
# Reduced chi-squared =         0.7070 for     55 degrees of freedom 
# Null hypothesis probability =   9.509321e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.636e-07   5.119e-08
25- 50  4.942e-07   9.895e-08
50-150  1.105e-06   5.332e-07
15-150  1.863e-06   6.090e-07

Peak spectrum fit

Power-law model

Time interval is from   39.952 sec. to   40.952 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78070     ( -0.27725   0.295139 )
Norm@50keV  : 6.37436E-03    ( -0.001228   0.0011925 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.13 using 59 PHA bins.
# Reduced chi-squared =          1.248 for     57 degrees of freedom 
# Null hypothesis probability =   9.878573e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.871888 ( -0.137011  0.137012 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.87276e-08 ( -1.13205e-08  1.17441e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   39.952 sec. to   40.952 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.13475     ( -1.4005   1.03444 )
Epeak [keV] : 56.5607      ( -48.9277 -56.5607 )
Norm@50keV  : 1.49984E-02    ( -0.00955673   0.0840504 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.06 using 59 PHA bins.
# Reduced chi-squared =          1.251 for     56 degrees of freedom 
# Null hypothesis probability =   9.805894e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.851274 ( -0.140615  0.140859 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.46048e-08 ( -1.25195e-08  1.34656e-08 ) ergs/cm2

Band function

Time interval is from   39.952 sec. to   40.952 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.15076   ( -1.64128   1.00769 )
beta        : -9.37165    ( 9.37167   19.3717 )
Epeak [keV] : 57.1690      ( -21.8114 -57.1355 )
Norm@50keV   : 1.46504E-02    ( -0.00747394   0.00662913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.06 using 59 PHA bins.
# Reduced chi-squared =          1.274 for     55 degrees of freedom 
# Null hypothesis probability =   8.311142e-02
 
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]    : 10.6685  (-1.98059  2.5463)
R^2/D10^2   : 0.323835  (-0.17587   0.369952)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.35 using 59 PHA bins.
# Reduced chi-squared =          1.357 for     57 degrees of freedom 
# Null hypothesis probability =   3.770111e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.649e-09   2.467e-09
25- 50  2.078e-08   4.990e-09
50-150  1.304e-08   5.583e-09
15-150  4.147e-08   9.890e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 95.4222       (-41.2791      -95.4222)
Norm        : 3.91712       (-0.767625     1.04298)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.10 using 59 PHA bins.
# Reduced chi-squared =          1.230 for     57 degrees of freedom 
# Null hypothesis probability =   1.141201e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.023e-08   2.296e-09
25- 50  1.753e-08   4.400e-09
50-150  2.765e-08   1.884e-08
15-150  5.541e-08   2.496e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.21332        (-2.78348      3.06873)
R1^2/D10^2  : 1.59281        (-1.14432      11.9164)
kT2 [keV]   : 20.7819        (-8.16187      32.3339)
R2^2/D10^2  : 1.91532E-02    (-0.018309   0.122681)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.56 using 59 PHA bins.
# Reduced chi-squared =          1.265 for     55 degrees of freedom 
# Null hypothesis probability =   8.944874e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.015e-08   6.025e-09
25- 50  1.724e-08   9.220e-09
50-150  2.675e-08   1.618e-08
15-150  5.414e-08   2.880e-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: 1.55910     ( -0.140072   0.141358 )
Norm@50keV  : 1.20636E-03    ( -9.63468e-05   9.54785e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.57 using 59 PHA bins.
# Reduced chi-squared =         0.9399 for     57 degrees of freedom 
# Null hypothesis probability =   6.043575e-01
 
Photon flux (15-150 keV)    in 128.1 sec: 0.153123 ( -0.0116105  0.0116238 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.45294e-06 ( -1.27235e-07  1.28685e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.55544     ( -0.139161   0.143743 )
Epeak [keV] : 9999.35      ( -9999.36 -9999.36 )
Norm@50keV  : 1.20988E-03    ( -0.00120978   0.000578854 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.59 using 59 PHA bins.
# Reduced chi-squared =         0.9569 for     56 degrees of freedom 
# Null hypothesis probability =   5.667383e-01
 
Photon flux (15-150 keV)    in 128.1 sec: 0.153191 ( -0.011676  0.011508 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.44998e-06 ( -6.31277e-08  1.28036e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.815668   ( 1.05064   1.05064 )
beta        : -1.61328    ( -0.265576   0.180112 )
Epeak [keV] : 47.2662      ( -46.663 -46.663 )
Norm@50keV   : 3.87157E-03    ( -0.00410447   178.35 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.17 using 59 PHA bins.
# Reduced chi-squared =         0.9667 for     55 degrees of freedom 
# Null hypothesis probability =   5.448129e-01
 
Photon flux (15-150 keV)    in 128.1 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)  = 4.66e-07
S(50-100 keV) = 5.90e-07

T90 vs. Hardness ratio plot

T90                                   = 187 sec.
Hardness ratio (energy fluence ratio) = 1.26609

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.1192
Count Ratio (50-100 keV) / (15-25 keV) = 0.727445

Mask shadow pattern

IMX = 8.881739870735185E-02, IMY = 3.693123778236507E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:

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

Time interval of the image:
-73.147400 54.952000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5571 -40.5675    2.3  38.8 -170.3   0.7486   5.1    1.5	Vela X-1                      
170.1517 -60.6468    4.5  45.1  146.4   0.8015   2.5    5.0	Cen X-3                       
134.7994 -64.1533    2.6  54.2  164.7   2.4622   4.5 ------	UNKNOWN                       
201.9929  25.8735    2.3  51.9    4.4   1.5868   5.0 ------	UNKNOWN                       
124.8658 -46.0112    2.6  48.2 -172.2   0.8956   4.4 ------	UNKNOWN                       
155.6422  -0.0268    0.6  20.8  -76.5   2.4408  19.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
-299.048000 302.982500
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5293 -40.5307    2.2  38.8 -170.3   2.0013   5.3    1.4	Vela X-1                      
169.9306 -60.6494    4.2  45.2  146.6   2.4685   2.7   11.4	Cen X-3                       
187.2392 -23.5969    3.6  18.4   85.6   0.9447   3.2 ------	UNKNOWN                       
155.6105  -0.0109    1.5  20.8  -76.5   2.5744   7.8 ------	UNKNOWN                       
165.4564  23.4044    2.7  39.1  -39.5   1.9134   4.3 ------	UNKNOWN                       
111.2478 -26.7376    5.0  55.2 -145.3   4.8600   2.3 ------	UNKNOWN                       
133.0447   3.8790    3.5  41.1  -98.2   5.8000   3.3 ------	UNKNOWN

Plot creation:
Sun May 31 16:33:21 EDT 2015