batgrbproduct analysis for trigger=357498

batgrbproduct Analysis for Trigger=357498

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 15:16:43 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger357498
======================================================================

  Trigger: 00357498      Segment: 000

  BAT Trigger Time: 269371544.064   [s; MET]
      Trigger Stop: 269371544.32   [s; MET]
               UTC: 2009-07-15T17:25:39.150560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 152.121935465376   Dec: 9.99748569935098  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.85
     Image Trigger?:     NO
     Rate S/N Ratio:     57.835974963685  [ if not an image trigger ]
     Image S/N Ratio:    9.85

  Flight Position:   [ source = BAT ]
    RA: 152.121935465376   Dec: 9.99748569935098  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 152.11515298902   Dec: 10.0054080605702  [deg; J2000]  
        { 10h 08m 27.6s , +10d 00' 19.5" }
         +/- 2.63985917847115 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.4183581684834 [arcmin] (formal 1-sigma fit error)
    SNR: 7.60081480362925
 
  Angular difference between Flight and Ground position is 0.621741 arcmin
 
  Partial Coding Fraction: 0.2207031    [ including projection effects ]

  Duration
     T90: 64 +/- 22.6274169979695
        Measured from: -15.0640000104904
                   to: 48.9359999895096     [s; relative to TRIGTIME]
     T50: 48 +/- 16
        Measured from: -15.0640000104904
                   to: 32.9359999895096     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -7.56400001049042     
                   to: -6.56400001049042     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.0640000104904     
                   to: 48.9359999895096     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.210651   0.442707   0.397521   0.167566
           0.094032   0.098151   0.087631   0.078305 [error]
 Peak     -0.017494   0.008448   0.016077   0.001065
           0.011992   0.011552   0.010758   0.008812 [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 7.64e-08 1.84e-07 3.52e-07 1.65e-06 9.54e-07 2.27e-06   erg/cm2
              Error 4.07e-08 5.78e-08 8.33e-08 1.00e-06 2.19e-07 1.02e-06   erg/cm2
Peak flux Power-law 2.32e-02 4.59e-02 7.26e-02 2.53e-01 2.03e-01 3.87e-01   ph/cm2/s
              Error 6.58e-02 7.18e-02 7.33e-02 6.57e-01 2.33e-01 6.83e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.48e-08 1.83e-07 3.53e-07 1.67e-06 9.54e-07 2.17e-06   erg/cm2
              Error 2.99e-08 5.76e-08 8.48e-08 1.63e-06 1.63e-07 --------   erg/cm2
Peak flux Cutoff-PL 5.36e-04 3.16e-02 1.51e-01 2.37e-02 2.05e-01 2.06e-01   ph/cm2/s
              Error 3.73e-02 7.42e-02 1.17e-01 -------- 2.03e-01 2.95e-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    1.061    0.449    -      -           1.41e-03 3.40e-04   57.780 57
CPL   1.070    0.550    9999.4    0.0      1.42e-03 1.28e-03   57.790 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.347    0.000    -      -           1.65e-03 2.02e-03   59.610 57
CPL -10.000    0.000      79.5   73.4      5.21e+00 1.82e+02   57.720 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: 0.320000 sec.
T50 in the 50-300 keV band: 0.192000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.000  -15.064   48.936
T90    64.000  -15.064   48.936
T50    48.000  -15.064   32.936
Peak    1.000   -7.564   -6.564

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
  152.1152    10.0054   0.0253    47.1921  -145.7587         1.5176116      7.601 TRIG_00357498                 
 
Foreground time interval of the image:
-15.064  48.936 (delta_t =  64.000 [sec])
Background time interval of the image:
-239.064 -15.064 (delta_t = 224.000 [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 0.256000

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 0.256000

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 0.256000

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  -15.064 sec. to   48.936 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06084     ( -0.476325   0.420964 )
Norm@50keV  : 1.40789E-03    ( -0.000347816   0.000331335 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.78 using 59 PHA bins.
# Reduced chi-squared =          1.014 for     57 degrees of freedom 
# Null hypothesis probability =   4.462443e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.162740 ( -0.0408615  0.0414608 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.54214e-07 ( -2.18317e-07  2.18788e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -15.064 sec. to   48.936 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07036     ( -0.688979   0.410269 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.41982E-03    ( -0.000317316   0.00224127 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.79 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     56 degrees of freedom 
# Null hypothesis probability =   4.088032e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.164100 ( -0.04168  0.039497 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.54278e-07 ( -1.10106e-07  2.15354e-07 ) ergs/cm2

Band function

Time interval is from  -15.064 sec. to   48.936 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96666   ( -4.96666   -4.96666 )
beta        : -1.13594    ( -0.53816   0.516988 )
Epeak [keV] : 30.0520      ( -30.052 47.2069 )
Norm@50keV   : 32.6334    ( -7.23024   521660 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.61 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     55 degrees of freedom 
# Null hypothesis probability =   3.790179e-01
 
Photon flux (15-150 keV)    in 64 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]    : 26.7350  (-8.67165  16.9901)
R^2/D10^2   : 2.96109E-03  (-0.002214   0.00736196)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.79 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     57 degrees of freedom 
# Null hypothesis probability =   2.233316e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.268e-08   1.256e-08
25- 50  1.330e-07   7.785e-08
50-150  6.960e-07   4.084e-07
15-150  8.517e-07   4.940e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 0.709361       (-0.164643     0.164597)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.39 using 59 PHA bins.
# Reduced chi-squared =          1.095 for     57 degrees of freedom 
# Null hypothesis probability =   2.906189e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.131e-07   6.752e-08
25- 50  2.177e-07   1.251e-07
50-150  4.774e-07   2.780e-07
15-150  8.081e-07   4.669e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.19556        (-3.35871      5.80394)
R1^2/D10^2  : 0.102831        (-0.0861048      0.617026)
kT2 [keV]   : 57.3896        (-29.0766      -57.376)
R2^2/D10^2  : 3.16820E-04    (-0.00027485   0.00190214)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.08 using 59 PHA bins.
# Reduced chi-squared =          1.020 for     55 degrees of freedom 
# Null hypothesis probability =   4.340260e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.787e-08   5.206e-08
25- 50  1.970e-07   1.215e-07
50-150  7.155e-07   3.811e-07
15-150  1.000e-06   5.146e-07

Peak spectrum fit

Power-law model

Time interval is from   -7.564 sec. to   -6.564 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.346917     ( -0.378549   -0.378549 )
Norm@50keV  : 1.65320E-03    ( -0.00166575   0.00236594 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.61 using 59 PHA bins.
# Reduced chi-squared =          1.046 for     57 degrees of freedom 
# Null hypothesis probability =   3.807502e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.202677 ( -0.203742  0.261892 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.40887e-08 ( -2.41004e-08  2.45879e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -7.564 sec. to   -6.564 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.99999     (     )
Epeak [keV] : 79.5068      ( -26.7849 120.085 )
Norm@50keV  : 5.20865    ( -5.08048   359.69 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.72 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     56 degrees of freedom 
# Null hypothesis probability =   4.114666e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.204808 ( -0.204808  0.200506 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.36214e-08 ( -2.36214e-08  2.20771e-08 ) ergs/cm2

Band function

Time interval is from   -7.564 sec. to   -6.564 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.17501   ( -0.650734   -0.650734 )
beta        : -10.00000    ( 10   10 )
Epeak [keV] : 83.9267      ( -35.2984 345.728 )
Norm@50keV   : 0.125058    ( -0.125058   0.272418 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.28 using 59 PHA bins.
# Reduced chi-squared =          1.060 for     55 degrees of freedom 
# Null hypothesis probability =   3.555849e-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]    : 27.6835  (  )
R^2/D10^2   : 5.02667E-03  (-0.00523973   0.0587883)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.92 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     57 degrees of freedom 
# Null hypothesis probability =   4.050108e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 7.00000       (-7      -7)
Norm        : 0.0       (0     0)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.23 using 59 PHA bins.
# Reduced chi-squared =          1.092 for     57 degrees of freedom 
# Null hypothesis probability =   2.954673e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.00000        (-4      -4)
R1^2/D10^2  : 0.0        (0      0)
kT2 [keV]   : 27.5452        (-16.2086      -27.5452)
R2^2/D10^2  : 5.19241E-03    (-0.00518107   0.0588072)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.92 using 59 PHA bins.
# Reduced chi-squared =          1.071 for     55 degrees of freedom 
# Null hypothesis probability =   3.341002e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

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: 1.06084     ( -0.476325   0.420964 )
Norm@50keV  : 1.40789E-03    ( -0.000347816   0.000331335 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.78 using 59 PHA bins.
# Reduced chi-squared =          1.014 for     57 degrees of freedom 
# Null hypothesis probability =   4.462443e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.162740 ( -0.0408615  0.0414608 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.54214e-07 ( -2.18317e-07  2.18788e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07036     ( -0.688979   0.410269 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 1.41982E-03    ( -0.000317316   0.00224127 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.79 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     56 degrees of freedom 
# Null hypothesis probability =   4.088032e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.164100 ( -0.04168  0.039497 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.54278e-07 ( -1.10106e-07  2.15354e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96666   ( -4.96666   -4.96666 )
beta        : -1.13594    ( -0.53816   0.516988 )
Epeak [keV] : 30.0520      ( -30.052 47.5441 )
Norm@50keV   : 32.6334    ( -7.23024   521660 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.61 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     55 degrees of freedom 
# Null hypothesis probability =   3.790179e-01
 
Photon flux (15-150 keV)    in 64 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)  = 1.84e-07
S(50-100 keV) = 3.52e-07

T90 vs. Hardness ratio plot

T90                                   = 64 sec.
Hardness ratio (energy fluence ratio) = 1.91304

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 2.10161
Count Ratio (50-100 keV) / (15-25 keV) = 1.88711

Mask shadow pattern

IMX = -8.924821866364759E-01, IMY = 6.074714549047846E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

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:
-239.064000 -15.064000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
231.6069  79.6115    2.5  33.6    7.6   0.9387   4.7 ------	UNKNOWN                       
165.9848  12.9071    2.8  39.7 -162.9   0.9645   4.1 ------	UNKNOWN                       
163.2789  -3.9820    2.3  56.7 -165.0   3.5291   5.1 ------	UNKNOWN                       
 71.8706  66.8392    2.8  51.2  -35.3   2.4393   4.1 ------	UNKNOWN                       
144.1703  10.2623    3.8  50.6 -136.4   2.4078   3.0 ------	UNKNOWN

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

Time interval of the image:
-15.064000 48.936000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
152.1151  10.0054    1.5  47.2 -145.8   1.5175   7.6 ------	UNKNOWN                       
149.1845  10.8201    2.0  47.7 -141.8   1.3409   5.9 ------	UNKNOWN                       
120.4759  43.3181    1.7  41.1  -82.5   2.3135   6.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
758.136600 962.996000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4723  35.3137    5.4   4.5  119.6   0.3988   2.2    1.9	Her X-1                       
299.5933  35.2016    0.4  36.5   32.4   8.0639  27.0    0.1	Cyg X-1                       
308.0981  40.9447    2.5  41.0   20.2   1.4787   4.6    0.7	Cyg X-3                       
326.1739  38.3991    5.5  54.8   16.5   2.2558   2.1    4.6	Cyg X-2                       
200.4556  11.3634    2.3  54.6 -155.9   3.2613   5.1 ------	UNKNOWN

Plot creation:
Sun May 31 03:31:20 EDT 2015