batgrbproduct analysis for trigger=349450

batgrbproduct Analysis for Trigger=349450

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 17:38:38 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger349450
======================================================================

  Trigger: 00349450      Segment: 000

  BAT Trigger Time: 261674408   [s; MET]
      Trigger Stop: 261674728   [s; MET]
               UTC: 2009-04-17T15:20:03.333200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 209.706264668258   Dec: 47.000469086625  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    9.81
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.81

  Flight Position:   [ source = BAT ]
    RA: 209.706264668258   Dec: 47.000469086625  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew image ]
    RA: 209.706   Dec: 47.0005  [deg; J2000]
        { 13h 58m 49.4s , +47d 00' 01.8" }
        +/- 1.85165129361 [arcmin] (estimated 90% radius based on SNR)
    SNR: 12.6167577658
 
 
  Angular difference between Flight and Ground position is 0.010988 arcmin
 
  Partial Coding Fraction: 0.9453125    [ including projection effects ]

  Duration
     T90: 266.940000027418 +/- 35.3896461975869
        Measured from: 332.803999990225
                   to: 599.744000017643     [s; relative to TRIGTIME]
     T50: 146.280000001192 +/- 30.9583074703426
        Measured from: 386.011999994516
                   to: 532.291999995708     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 409.699999988079     
                   to: 410.699999988079     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 318.375999987125     
                   to: 627.743999987841     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.452705   1.437020   1.039667   0.241893
           0.084908   0.087772   0.077696   0.068468 [error]
 Peak      0.017143   0.013875   0.007839   0.004109
           0.004912   0.005006   0.004361   0.003855 [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 4.07e-07 6.18e-07 7.03e-07 1.53e-06 2.18e-06 3.25e-06   erg/cm2
              Error 4.45e-08 4.08e-08 7.75e-08 3.55e-07 1.73e-07 4.22e-07   erg/cm2
Peak flux Power-law 1.29e-01 9.78e-02 4.96e-02 3.60e-02 2.93e-01 3.12e-01   ph/cm2/s
              Error 6.38e-02 3.79e-02 3.30e-02 5.39e-02 1.10e-01 1.23e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.12e-07 6.19e-07 6.97e-07 1.40e-06 2.19e-06 3.12e-06   erg/cm2
              Error 3.15e-08 4.08e-08 7.67e-08 -------- 1.69e-07 5.24e-07   erg/cm2
Peak flux Cutoff-PL 1.67e-01 1.28e-01 4.82e-02 3.34e-02 2.91e-01 2.92e-01   ph/cm2/s
              Error -------- -------- 3.16e-02 5.35e-02 1.10e-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    1.814    0.136    -      -           7.67e-04 5.93e-05   60.810 57
CPL   2.524    0.138     179.8   -0.0      3.58e-04 0.00e+00   59.560 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.980    0.766    -      -           1.97e-03 1.01e-03   72.690 57
CPL  -5.027    0.000      25.8    4.9      3.68e+02 0.00e+00   66.860 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: 269.504000 sec.
T50 in the 50-300 keV band: 140.544000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  309.368  318.376  627.744
T90   266.940  332.804  599.744
T50   146.280  386.012  532.292
Peak    1.000  409.700  410.700

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
209.706 47.001 0.000 18.903 18.099 3.995 12.617 TRIG_00349450
 
Image time interval: -239.000 to 336.000 [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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

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  318.376 sec. to  627.744 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.81356     ( -0.1341   0.137419 )
Norm@50keV  : 7.66940E-04    ( -5.98188e-05   5.87748e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.81 using 59 PHA bins.
# Reduced chi-squared =          1.067 for     57 degrees of freedom 
# Null hypothesis probability =   3.404404e-01
 
Photon flux (15-150 keV)    in 309.4 sec: 0.106243 ( -0.00711587  0.0071296 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.18355e-06 ( -1.72245e-07  1.74529e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  318.376 sec. to  627.744 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.52388     ( -0.140361   0.135232 )
Epeak [keV] : 179.780      ( -9999.35 -9999.36 )
Norm@50keV  : 3.57902E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.56 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     56 degrees of freedom 
# Null hypothesis probability =   3.474051e-01
 
Photon flux (15-150 keV)    in 309.4 sec: 0.106388 ( -0.0073748  0.006997 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.18501e-06 ( -1.73524e-07  1.65192e-07 ) ergs/cm2

Band function

Time interval is from  318.376 sec. to  627.744 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.43161   ( 1.44847   1.44847 )
beta        : -1.81297    ( -0.137464   0.134012 )
Epeak [keV] : 21.2047      ( -18.229 -18.229 )
Norm@50keV   : 1.81384E-03    ( -0.000880528   0.0624402 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.81 using 59 PHA bins.
# Reduced chi-squared =          1.106 for     55 degrees of freedom 
# Null hypothesis probability =   2.746753e-01
 
Photon flux (15-150 keV)    in 309.4 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]    : 11.1876  (  )
R^2/D10^2   : 3.05806E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         149.76 using 59 PHA bins.
# Reduced chi-squared =         2.6273 for     57 degrees of freedom 
# Null hypothesis probability =   2.889383e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.482e-07   2.879e-08
25- 50  7.172e-07   5.585e-08
50-150  5.136e-07   8.601e-08
15-150  1.479e-06   1.170e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 104.805       (-25.6942      51.3794)
Norm        : 0.457705       (-0.0449392     0.0476818)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.63 using 59 PHA bins.
# Reduced chi-squared =          1.222 for     57 degrees of freedom 
# Null hypothesis probability =   1.216683e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.701e-07   3.960e-08
25- 50  6.459e-07   5.090e-08
50-150  1.074e-06   3.431e-07
15-150  2.090e-06   3.923e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.63662        (-0.847806      0.951413)
R1^2/D10^2  : 0.322029        (-0.14664      0.307806)
kT2 [keV]   : 26.3581        (-5.04939      8.30614)
R2^2/D10^2  : 1.14690E-03    (-0.000671016   0.00125502)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.16 using 59 PHA bins.
# Reduced chi-squared =          1.076 for     55 degrees of freedom 
# Null hypothesis probability =   3.262227e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.240e-07   8.908e-08
25- 50  5.741e-07   1.027e-07
50-150  1.260e-06   3.679e-07
15-150  2.258e-06   5.165e-07

Peak spectrum fit

Power-law model

Time interval is from  409.700 sec. to  410.700 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98042     ( -0.722189   0.809983 )
Norm@50keV  : 1.97128E-03    ( -0.00102612   0.000995049 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.69 using 59 PHA bins.
# Reduced chi-squared =          1.275 for     57 degrees of freedom 
# Null hypothesis probability =   7.863088e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.293061 ( -0.110276  0.110401 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.81615e-08 ( -8.37396e-09  9.56668e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from  409.700 sec. to  410.700 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -5.02724     (     )
Epeak [keV] : 25.8275      ( -4.46184 5.3358 )
Norm@50keV  : 367.880    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.86 using 59 PHA bins.
# Reduced chi-squared =          1.194 for     56 degrees of freedom 
# Null hypothesis probability =   1.517703e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.292142 0.291086 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10558e-16 ( 0  0 ) ergs/cm2

Band function

Time interval is from  409.700 sec. to  410.700 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -3.21109   -5 )
beta        : -7.06107    ( 6.92171   4.5275 )
Epeak [keV] : 25.8730      ( -4.0882 4.63199 )
Norm@50keV   : 381.291    ( -125.202   866.32 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.59 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     55 degrees of freedom 
# Null hypothesis probability =   1.359468e-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]    : 6.31266  (-1.44606  2.00804)
R^2/D10^2   : 0.901837  (-0.895224   1.68728)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.90 using 59 PHA bins.
# Reduced chi-squared =          1.226 for     57 degrees of freedom 
# Null hypothesis probability =   1.172642e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.118e-09   3.154e-09
25- 50  5.690e-09   3.782e-09
50-150  6.388e-10   5.770e-10
15-150  1.145e-08   7.570e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 41.2406       (-25.9865      -41.1887)
Norm        : 1.82809       (-1.00715     2.59581)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.95 using 59 PHA bins.
# Reduced chi-squared =          1.280 for     57 degrees of freedom 
# Null hypothesis probability =   7.568865e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.240e-09   2.680e-09
25- 50  5.652e-09   3.732e-09
50-150  4.520e-09   3.797e-09
15-150  1.441e-08   9.660e-09

Double BB

R1^2/D10^2  : 4.84804E-05        (-3.85965e-05      0.00246318)
kT2 [keV]   : 6.03483        (-1.36269      1.73752)
R2^2/D10^2  : 1.02828    (-0.707938   1.99421)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.90 using 59 PHA bins.
#Fit statistic : Chi-Squared =          65.77 using 59 PHA bins.
#Fit statistic : Chi-Squared =          65.73 using 59 PHA bins.
# Reduced chi-squared =          1.271 for     55 degrees of freedom 
# Reduced chi-squared =          1.196 for     55 degrees of freedom 
# Reduced chi-squared =          1.195 for     55 degrees of freedom 
# Null hypothesis probability =   8.503706e-02
# Null hypothesis probability =   1.517506e-01
# Null hypothesis probability =   1.524276e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.097e-09   3.070e-03
25- 50  5.761e-09   3.052e-02
50-150  6.687e-10   7.325e-01
15-150  1.153e-08   6.965e-01

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: 1.93293     ( -0.530287   0.63337 )
Norm@50keV  : 7.86595E-04    ( -0.000295944   0.000263847 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.15 using 59 PHA bins.
# Reduced chi-squared =          1.125 for     57 degrees of freedom 
# Null hypothesis probability =   2.402196e-01
 
Photon flux (15-150 keV)    in 17.72 sec: 0.114496 ( -0.0282146  0.0282156 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.28201e-07 ( -4.23515e-08  4.53035e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.92138     ( -1.54574   7.10543e-15 )
Epeak [keV] : 280.693      (   )
Norm@50keV  : 2.54592E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.51 using 59 PHA bins.
# Reduced chi-squared =          1.098 for     56 degrees of freedom 
# Null hypothesis probability =   2.853775e-01
 
Photon flux (15-150 keV)    in 17.72 sec: 0.114405 ( -0.0281759  0.028167 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.2697e-07 ( -4.10512e-08  2.41584e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.60066   ( 1.60071   1.60071 )
beta        : -1.93294    ( 1.93311   0.53023 )
Epeak [keV] : 11.3778      ( -11.375 -11.375 )
Norm@50keV   : 1.90639E-03    ( -0.00190666   0.0409848 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.15 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     55 degrees of freedom 
# Null hypothesis probability =   1.864053e-01
 
Photon flux (15-150 keV)    in 17.72 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)  = 6.18e-07
S(50-100 keV) = 7.03e-07

T90 vs. Hardness ratio plot

T90                                   = 266.940000027418 sec.
Hardness ratio (energy fluence ratio) = 1.13754

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.989203
Count Ratio (50-100 keV) / (15-25 keV) = 0.715677

Mask shadow pattern

IMX = 0.325497189204, IMY = -0.10638003043

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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 318.376000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4731  35.4002    4.7  53.3    5.0   2.8492   2.5    3.5	Her X-1                       
209.6969  47.0072    1.0  18.9   18.1   3.7318  12.1 ------	UNKNOWN                       
215.8100  55.3435    2.8  21.1   -8.2   1.3152   4.2 ------	UNKNOWN                       
111.7201  31.4564    3.2  53.7 -154.4   3.6750   3.6 ------	UNKNOWN                       
294.8754  75.1889    3.4  47.0  -53.0   6.0351   3.4 ------	UNKNOWN

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

Time interval of the image:
318.376000 336.100590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4949  35.2991    3.8  53.4    5.0   0.5001   3.1    3.2	Her X-1                       
275.5954  88.9970    1.9  39.5  -70.1   0.6801   6.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
376.100590 963.095200
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4220  35.3145    1.2  35.1   -1.4   4.2340   9.3    2.4	Her X-1                       
158.6473  34.1156    2.7  40.1  175.8   1.9586   4.3 ------	UNKNOWN                       
209.6975  47.0107    0.7   0.0 -156.4   5.0072  16.3 ------	UNKNOWN                       
136.9516  30.0991    3.2  57.2 -173.8   5.4999   3.6 ------	UNKNOWN                       
252.9744  51.2439    2.9  28.2  -29.2   1.3404   3.9 ------	UNKNOWN                       
128.1843  35.8053    3.5  59.4 -163.2   9.1257   3.3 ------	UNKNOWN

Plot creation:
Wed Nov 25 14:46:13 EST 2015