batgrbproduct analysis for trigger=456969

batgrbproduct Analysis for Trigger=456969

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
4) This page will be updated for up to 10 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jan 13 21:53:18 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger456969
======================================================================

  Trigger: 00456969      Segment: 000

  BAT Trigger Time: 331940612.544   [s; MET]
      Trigger Stop: 331940614.592   [s; MET]
               UTC: 2011-07-09T21:43:25.403800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 164.647029809365   Dec: -23.4640038678624  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    18.78
     Image Trigger?:     NO
     Rate S/N Ratio:     39.2683078321437  [ if not an image trigger ]
     Image S/N Ratio:    18.78

  Flight Position:   [ source = BAT ]
    RA: 164.647029809365   Dec: -23.4640038678624  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 164.652975197518   Dec: -23.4589960879382  [deg; J2000]  
        { 10h 58m 36.7s , -23d 27' 32.4" }
         +/- 0.927250737560457 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.312688407391087 [arcmin] (formal 1-sigma fit error)
    SNR: 33.8828193867224
 
  Angular difference between Flight and Ground position is 0.444254 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 256.631999909878 +/- 12.2676713451914
        Measured from: -65.2080000042915
                   to: 191.423999905586     [s; relative to TRIGTIME]
     T50: 55.6039999723434 +/- 3.01355403867328
        Measured from: -17.676000058651
                   to: 37.9279999136925     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.05999994277954     
                   to: 2.05999994277954     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -82.6520000100136     
                   to: 210.315999984741     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.877659   8.126863   6.582649   1.603799
           0.102519   0.108036   0.098286   0.087597 [error]
 Peak      0.119948   0.179887   0.162581   0.047337
           0.007548   0.008560   0.008127   0.006264 [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 -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Power-law 1.07e+00 1.24e+00 1.03e+00 1.45e+00 3.86e+00 4.79e+00   ph/cm2/s
              Error 1.02e-01 7.17e-02 6.47e-02 1.92e-01 2.02e-01 2.64e-01   ph/cm2/s
 
Fluence   Cutoff-PL -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Cutoff-PL 1.01e+00 1.26e+00 1.06e+00 1.07e+00 3.81e+00 4.40e+00   ph/cm2/s
              Error 1.23e-01 8.09e-02 7.41e-02 3.90e-01 2.10e-01 4.64e-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    0.000    0.000    -      -           0.00e+00 0.00e+00    0.000  0
CPL   0.000    0.000       0.0    0.0      0.00e+00 0.00e+00    0.000  0
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.262    0.090    -      -           3.26e-02 1.69e-03   58.980 57
CPL   0.998    0.334     199.6  -56.4      4.37e-02 1.67e-02   57.220 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: 255.552000 sec.
T50 in the 50-300 keV band: 47.936000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  292.968  -82.652  210.316
T90   256.632  -65.208  191.424
T50    55.604  -17.676   37.928
Peak    1.000    1.060    2.060

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
  164.6530   -23.4590   0.0057     0.0350    -6.8368        18.6702938     33.883 TRIG_00456969                 
 
Foreground time interval of the image:
-82.652 210.316 (delta_t = 292.968 [sec])
Background time interval of the image:
-119.544 -82.652 (delta_t =  36.892 [sec])

Lightcurves

Notes:

1) All plots contain as much data as has been downloaded to date.
2) The mask-weighted light curves are using the flight position.
3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
4) 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.
5) 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.
6) 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 2.048000

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 2.048000

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 2.048000

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) For long bursts, a spectral fit of 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.
4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.

Time averaged spectrum fit using the pre-slew DRM

Power-law model

Time interval is from  -82.652 sec. to  210.316 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index:      (     )
Norm@50keV  :     (     )
------------------------------------------------------------
grep: bat_spec.log: No such file or directory
grep: bat_spec.log: No such file or directory
grep: bat_spec.log: No such file or directory
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Cutoff power-law model

Time interval is from  -82.652 sec. to  210.316 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index:      (     )
Epeak [keV] :       (   )
Norm@50keV  :     (     )
------------------------------------------------------------
grep: bat_spec_cutplep.log: No such file or directory
grep: bat_spec_cutplep.log: No such file or directory
grep: bat_spec_cutplep.log: No such file or directory
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from  -82.652 sec. to  210.316 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
       This script tries to add the systematic column to the PHA
       file before doing the fitting                            
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel

Single BB

Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Thermal bremsstrahlung (OTTB)

Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Double BB

Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)           
       This script tries to add the systematic column to the PHA
       file before doing the fitting

Peak spectrum fit

Power-law model

Time interval is from    0.000 sec. to    0.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26169     ( -0.0904175   0.0903636 )
Norm@50keV  : 3.25613E-02    ( -0.00168592   0.00168419 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.98 using 59 PHA bins.
# Reduced chi-squared =          1.035 for     57 degrees of freedom 
# Null hypothesis probability =   4.030999e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.85854 ( -0.201791  0.201932 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.24881e-07 ( -1.91244e-08  1.92183e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to    0.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.998010     ( -0.366425   0.301075 )
Epeak [keV] : 199.649      ( -86.9105 -199.649 )
Norm@50keV  : 4.37361E-02    ( -0.0120305   0.0213828 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.22 using 59 PHA bins.
# Reduced chi-squared =          1.022 for     56 degrees of freedom 
# Null hypothesis probability =   4.295285e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.81342 ( -0.20994  0.20971 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.18921e-07 ( -2.0934e-08  2.0815e-08 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to    0.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.12450   ( -0.918724   -0.918724 )
beta        : -1.31694    ( 1.3157   0.111356 )
Epeak [keV] : 33.9720      ( -33.8443 118.186 )
Norm@50keV   : 1.78250    ( -1.83824   1054.71 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.78 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     55 degrees of freedom 
# Null hypothesis probability =   4.084211e-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]    : 17.5553  (  )
R^2/D10^2   : 0.267402  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         130.74 using 59 PHA bins.
# Reduced chi-squared =         2.2936 for     57 degrees of freedom 
# Null hypothesis probability =   1.009735e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.663e-08   1.675e-09
25- 50  7.546e-08   5.425e-09
50-150  1.677e-07   1.640e-08
15-150  2.597e-07   1.740e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 15.8275       (-0.824652     0.824591)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.52 using 59 PHA bins.
# Reduced chi-squared =          1.483 for     57 degrees of freedom 
# Null hypothesis probability =   1.040959e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.941e-08   2.170e-09
25- 50  7.580e-08   5.150e-09
50-150  1.662e-07   2.720e-08
15-150  2.815e-07   1.720e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.29369        (-1.39754      1.70516)
R1^2/D10^2  : 2.83693        (-1.33489      2.93766)
kT2 [keV]   : 28.5859        (-4.37313      7.51212)
R2^2/D10^2  : 4.43936E-02    (-0.0240056   0.0348337)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.72 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     55 degrees of freedom 
# Null hypothesis probability =   3.752068e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.110e-08   7.235e-09
25- 50  7.272e-08   1.029e-08
50-150  2.146e-07   4.775e-08
15-150  3.184e-07   6.120e-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: 1.43295     ( -0.0370275   0.0369991 )
Norm@50keV  : 4.86113E-03    ( -9.21036e-05   9.20894e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.61 using 59 PHA bins.
# Reduced chi-squared =         0.8528 for     57 degrees of freedom 
# Null hypothesis probability =   7.778086e-01
 
Photon flux (15-150 keV)    in 293 sec: 0.596576 ( -0.0128824  0.0129246 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36733e-05 ( -2.68366e-07  2.68579e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20275     ( -0.157024   0.151966 )
Epeak [keV] : 198.084      ( -57.1404 251.944 )
Norm@50keV  : 6.12592E-03    ( -0.000847927   0.00101807 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.87 using 59 PHA bins.
# Reduced chi-squared =         0.7476 for     56 degrees of freedom 
# Null hypothesis probability =   9.197648e-01
 
Photon flux (15-150 keV)    in 293 sec: 0.584802 ( -0.014759  0.014846 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.34708e-05 ( -3.02522e-07  3.01175e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.18430   ( -0.14929   0.431166 )
beta        : -1.72577    ( 1.72089   0.255245 )
Epeak [keV] : 186.063      ( -116.751 236.962 )
Norm@50keV   : 6.24791E-03    ( -0.000869519   0.00519234 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.84 using 59 PHA bins.
# Reduced chi-squared =         0.7608 for     55 degrees of freedom 
# Null hypothesis probability =   9.042940e-01
 
Photon flux (15-150 keV)    in 293 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)  = --------
S(50-100 keV) = --------

T90 vs. Hardness ratio plot

T90                                   = 256.631999909878 sec.
Hardness ratio (energy fluence ratio) =

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.38267
Count Ratio (50-100 keV) / (15-25 keV) = 1.11994

Mask shadow pattern

IMX = 6.069932816754127E-04, IMY = 7.277453487362749E-05

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-119.544000 -82.652000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5452 -40.5486    3.2  29.8 -167.6   0.2797   3.7    0.8	Vela X-1                      
170.2464 -60.6140    3.2  37.3  139.7   0.5150   3.7    2.1	Cen X-3                       
186.6930 -62.8038  104.4  42.0  129.4   0.0284   0.1    2.2	GX 301-2                      
164.6779 -23.4356    1.6   0.1    0.4   0.5006   7.2 ------	UNKNOWN                       
182.1333   7.1091    2.2  35.1   -4.4   0.4977   5.3 ------	UNKNOWN

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

Time interval of the image:
-82.652000 210.316000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.2748 -40.5459    0.0  29.9 -167.5  -0.1894  -0.3   11.6	Vela X-1                      
169.9800 -60.6168    4.5  37.3  139.9  -2.8756  -2.6    9.9	Cen X-3                       
186.7447 -62.6473   26.4  41.9  129.3   0.8962   0.4    7.8	GX 301-2                      
164.6530 -23.4590    0.3   0.0   -6.8  18.6700  33.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
-119.544000 962.506900
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5713 -40.5634    0.9  29.8 -167.7   9.3125  12.7    2.0	Vela X-1                      
170.3775 -60.6300    2.0  37.4  139.6   8.0968   5.8    1.9	Cen X-3                       
186.7779 -62.7577    3.9  42.0  129.3   7.4417   2.9    3.4	GX 301-2                      
187.6785 -57.0872    2.9  37.5  123.8   6.8727   3.9 ------	UNKNOWN                       
165.8828 -47.4881    2.4  24.0  142.2   3.9305   4.9 ------	UNKNOWN                       
172.0796 -33.8389    2.6  12.2  113.7   2.9588   4.5 ------	UNKNOWN                       
193.6988   4.5515    3.6  39.9   13.3   3.6279   3.2 ------	UNKNOWN                       
154.6175 -39.6183    3.0  18.2  169.6   2.7249   3.9 ------	UNKNOWN                       
197.2044  21.8464    3.7  55.3    1.7   9.7986   3.1 ------	UNKNOWN                       
164.6579 -23.4534    0.4   0.0   -5.2  24.0704  32.3 ------	UNKNOWN                       
181.6789   6.7105    3.5  34.5   -4.8   2.9290   3.3 ------	UNKNOWN                       
108.7402 -40.0819    3.7  49.5 -159.2   4.2417   3.1 ------	UNKNOWN                       
102.7130 -28.6175    5.4  55.3 -145.3  11.7215   2.2 ------	UNKNOWN                       
112.5987 -18.6268    2.9  48.6 -130.4  12.6276   4.1 ------	UNKNOWN

Plot creation:
Sat Nov 29 17:00:38 EST 2014