Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time: Mon Jan 20 06:55:00 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger292934
======================================================================

  Trigger: 00292934      Segment: 000

  BAT Trigger Time: 213090057.28   [s; MET]
      Trigger Stop: 213090058.304   [s; MET]
               UTC: 2007-10-03T07:40:55.014420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 301.855657563997   Dec: 10.9597786609722  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.83
     Image Trigger?:     NO
     Rate S/N Ratio:     105.73551910309  [ if not an image trigger ]
     Image S/N Ratio:    17.83

  Analysis Position:   [ source = BAT ]
    RA: 301.855657563997   Dec: 10.9597786609722  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 301.858006009158   Dec: 10.9546334702133  [deg; J2000]  
        { 20h 07m 25.9s , +10d 57' 16.7" }
         +/- 0.879423354569308 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.356959080191321 [arcmin] (formal 1-sigma fit error)
    SNR: 36.5456364981517
 
  Angular difference between the analysis and refined position is 0.338290 arcmin
 
  Partial Coding Fraction: 0.34375    [ including projection effects ]

  Duration
     T90: 148.387999981642 +/- 4.61634835482968
        Measured from: -1.47999998927116
                   to: 146.907999992371     [s; relative to TRIGTIME]
     T50: 18.6520000100136 +/- 2.47665906139732
        Measured from: 2.5160000026226
                   to: 21.1680000126362     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.372000008821487     
                   to: 1.37200000882149     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -7.56799998879433     
                   to: 167.595999985933     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.768095   4.425166   3.819234   1.192102
           0.121120   0.121398   0.110544   0.103659 [error]
 Peak      0.133555   0.243109   0.315384   0.115953
           0.012052   0.014163   0.015695   0.013712 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100  175.164   -7.568  167.596
T90   148.388   -1.480  146.908
T50    18.652    2.516   21.168
Peak    1.000    0.372    1.372
 
 
====== Spectral Analysis Summary =====================================
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^{Ph_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 both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedo
 
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -1.335    -0.062      0.062       -           -               -         4.86e-03     -1.54e-04          1.54e-04      53.140   57
CPL     -1.332    -0.062      0.074     9998.400    -9998.400      -9998.400      4.88e-03     -1.53e-04          5.69e-04      53.170   56
 
 
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: PL)
 
Model Ph_index Ph_90err_low Ph_90err_hi  Epeak  Epeak_90err_low  Epeak_90err_hi  Norm       Nomr_90err_low    Norm_90err_hi    chi2    dof
PL      -0.841     -0.106     0.108       -           -               -         5.53e-02     -3.22e-03          3.21e-03      42.510   57
CPL     -0.834     -0.107     0.329     9998.480    -9998.480      -9998.480      5.57e-02     -3.18e-03          1.97e-02      42.530   56
 
 
=== 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         PL   9.33e-07  1.90e-06  3.01e-06  1.06e-05  8.35e-06  1.64e-05   erg/cm2
      90%_error_low -6.17e-08 -7.24e-08 -1.16e-07 -9.33e-07 -2.85e-07 -9.91e-07   erg/cm2
      90%_error_hi   6.34e-08  7.21e-08  1.15e-07  9.97e-07  2.86e-07  1.04e-06   erg/cm2
Peak flux       PL   1.22e+00  1.81e+00  2.03e+00  4.28e+00  6.35e+00  9.33e+00   ph/cm2/s
      90%_error_low -1.52e-01 -1.38e-01 -1.24e-01 -5.73e-01 -3.66e-01 -6.29e-01   ph/cm2/s
      90%_error_hi   1.60e-01  1.37e-01  1.23e-01  6.30e-01  3.66e-01  6.52e-01   ph/cm2/s
 
Fluence        CPL   9.41e-07  1.89e-06  2.99e-06  1.11e-05  8.38e-06  1.58e-05   erg/cm2
      90%_error_low -8.25e-08 -7.54e-08 -1.11e-07 -2.94e-06 -3.35e-07 -1.87e-06   erg/cm2
      90%_error_hi   5.76e-08  7.71e-08  1.40e-07  -1.17e-08  2.70e-07  1.06e-06   erg/cm2
Peak flux      CPL   1.21e+00  1.81e+00  2.03e+00  4.25e+00  6.35e+00  9.30e+00   ph/cm2/s
      90%_error_low     N/A   -1.38e-01     N/A       N/A       N/A       N/A     ph/cm2/s
      90%_error_hi      N/A    1.37e-01     N/A       N/A       N/A       N/A     ph/cm2/s
 
======================================================================




Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  301.8580    10.9546   0.0053    31.7436    57.9141        11.4289109     36.546 TRIG_00292934                 
 
Foreground time interval of the image:
 -7.568 124.421 (delta_t = 131.989 [sec])
Background time interval of the image:
-239.280  -7.568 (delta_t = 231.712 [sec])




Light Curves

Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.

Full-time range; 1 s binning

Bokeh Plot

Other quick-look light curves:




Spectra

Notes:

Time averaged spectrum fit using the average DRM

Power-law model
Time interval is from   -7.568 sec. to  167.596 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.33513     ( -0.0617006   0.0619154 )
Norm@50keV  : 4.86468E-03    ( -0.00015442   0.000154401 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.14 using 59 PHA bins.
# Reduced chi-squared =         0.9323 for     57 degrees of freedom 
# Null hypothesis probability =   6.205363e-01
 
Photon flux (15-150 keV)    in 175.2 sec: 0.584299 ( -0.02016  0.020245 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.35322e-06 ( -2.85254e-07  2.85991e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -7.568 sec. to  167.596 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.3317     ( -0.0619227   0.0736273 )
Epeak [keV] : 9998.40      ( -9998.7 -9998.7 )
Norm@50keV  : 4.88189E-03    ( -0.000154857   0.000567144 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.17 using 59 PHA bins.
# Reduced chi-squared =         0.9494 for     56 degrees of freedom 
# Null hypothesis probability =   5.828217e-01
 
Photon flux (15-150 keV)    in 175.2 sec: 0.586363 ( -0.030574  0.025044 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.38213e-06 ( -3.35126e-07  2.70221e-07 ) ergs/cm2
 

1-s peak spectrum fit

Power-law model
Time interval is from    0.372 sec. to    1.372 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.841377     ( -0.106099   0.107581 )
Norm@50keV  : 5.52901E-02    ( -0.00322008   0.00320711 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.51 using 59 PHA bins.
# Reduced chi-squared =         0.7458 for     57 degrees of freedom 
# Null hypothesis probability =   9.234892e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.34763 ( -0.3658  0.36646 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.35214e-07 ( -4.01687e-08  4.03243e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.372 sec. to    1.372 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.834203     ( -0.107062   0.328602 )
Epeak [keV] : 9998.48      ( -9998.71 -9998.71 )
Norm@50keV  : 5.56700E-02    ( -0.00318302   0.0197362 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.53 using 59 PHA bins.
# Reduced chi-squared =         0.7595 for     56 degrees of freedom 
# Null hypothesis probability =   9.077890e-01
 
Photon flux (15-150 keV)    in 1 sec: 6.34570 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.35814e-07 ( -4.40071e-08  3.24684e-08 ) ergs/cm2
 

Time-resolved spectra




Distribution

T90 vs. Hardness ratio plot

T90                                   = 148.388 sec.
Hardness ratio (energy fluence ratio) = 1.5854777875

S(15-50 keV) vs. S(50-150 keV) plot

S(15-50 keV)  = 2.8285986e-06
S(50-150 keV) = 5.524711e-06

The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.




Mask shadow pattern

IMX = 3.286278128282195E-01, IMY = -5.241649970967113E-01

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:
-239.280000 -7.568000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9885 -15.6428    0.6  32.9  -92.6   6.8446  20.5    0.5	Sco X-1                       
254.4898  35.3393    6.2  51.2  -15.2   0.8476   1.9    1.6	Her X-1                       
255.8180 -37.8883   22.1  34.0 -137.3   0.1310   0.5    8.4	4U 1700-377                   
256.6218 -36.5322    3.8  32.6 -136.5   0.6937   3.0   11.1	GX 349+2                      
262.9904 -24.6447    3.2  20.3 -126.1   0.6867   3.7    6.1	GX 1+4                        
264.7656 -44.3055   11.3  35.7 -153.4   0.2221   1.0    8.7	4U 1735-44                    
268.4158  -1.3509    2.1  13.5  -37.8   0.9932   5.6    6.7	SW J1753.5-0127               
270.2580 -25.1451    2.6  16.5 -143.4   0.7844   4.5    4.2	GX 5-1                        
270.4776 -25.8119    5.1  17.0 -145.1   0.4039   2.3   10.3	GRS 1758-258                  
273.9420 -14.0574    2.3   5.6 -119.5   0.8537   5.0    3.9	GX 17+2                       
275.8839 -30.4335    4.6  20.0 -163.8   0.4372   2.5    4.5	H1820-303                     
284.8814 -24.9534    6.7  15.7  167.5   0.2817   1.7    8.6	HT1900.1-2455                 
288.8041  10.9495    1.1  23.9   35.9   2.0128  10.1    0.4	GRS 1915+105                  
263.0334 -33.8380    2.8  27.2 -141.4   0.8468   4.1    2.2	GX 354-0                      
283.5865 -24.5195    3.0  14.8  171.0   0.6251   3.9 ------	UNKNOWN                       
282.4781 -42.4426    2.4  32.1 -175.8   1.0323   4.9 ------	UNKNOWN                       
267.8185  30.5885    2.7  42.4   -3.7   1.3208   4.3 ------	UNKNOWN                       
270.4332 -20.4853    2.7  12.5 -133.5   0.7611   4.3 ------	UNKNOWN                       
252.5306  41.7940    2.7  57.5  -12.8   3.9691   4.3 ------	UNKNOWN                       
258.5012 -66.1998    2.3  57.3 -160.7   4.6951   4.9 ------	UNKNOWN                       
236.6418   5.9591    2.8  44.7  -60.3   3.0598   4.1 ------	UNKNOWN                       

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

Time interval of the image:
-7.568000 124.420590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
245.1355 -15.7623   56.0  32.7  -92.9  -0.0566  -0.2   11.6	Sco X-1                       
254.3572  35.4682    8.6  51.3  -15.2  -0.5513  -1.3    9.0	Her X-1                       
255.9461 -37.9695   14.9  34.0 -137.6  -0.1619  -0.8    7.8	4U 1700-377                   
256.3831 -36.4775   18.1  32.7 -136.2   0.1311   0.6    4.1	GX 349+2                      
263.0091 -24.7458   37.6  20.4 -126.3   0.0527   0.3    0.0	GX 1+4                        
264.5663 -44.4712   20.5  35.9 -153.2  -0.1172  -0.6    7.7	4U 1735-44                    
268.3300  -1.5239   10.0  13.5  -38.6   0.1931   1.1    4.8	SW J1753.5-0127               
270.2859 -25.2277    8.5  16.6 -143.6   0.2280   1.4    8.9	GX 5-1                        
270.2189 -25.8998    5.3  17.2 -144.5   0.3719   2.2   10.4	GRS 1758-258                  
273.9413 -13.8949    4.0   5.5 -118.1   0.4422   2.9    9.3	GX 17+2                       
275.8502 -30.4935    3.8  20.1 -163.8  -0.5033  -3.1    8.5	H1820-303                     
285.0460 -24.7996    7.3  15.6  166.8   0.2617   1.6    7.3	HT1900.1-2455                 
288.7504  10.9245    5.1  23.8   35.8   0.4282   2.3    3.1	GRS 1915+105                  
262.8767 -33.7923    6.9  27.2 -141.1  -0.2947  -1.7    6.2	GX 354-0                      
301.8580  10.9546    0.3  31.7   57.9  11.4253  36.5 ------	UNKNOWN                       
293.4995  33.5633    2.4  46.4   27.3   2.5786   4.8 ------	UNKNOWN                       
262.1638  32.8993    2.8  46.1   -9.1   1.1913   4.1 ------	UNKNOWN                       
273.6470 -61.2439    2.7  50.8 -167.2   1.5741   4.2 ------	UNKNOWN                       
262.7278 -63.4969    2.5  54.1 -161.6   2.1166   4.6 ------	UNKNOWN                       
247.4020  27.3032    2.6  48.3  -27.9   1.5949   4.3 ------	UNKNOWN                       
236.8574 -25.5810    3.7  42.0 -106.8   2.4369   3.8 ------	UNKNOWN                       
	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
161.820600 723.220590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
255.9015 -37.9522   11.7  44.7 -121.9   1.4416   1.0    7.6	4U 1700-377                   
256.4540 -36.3769    6.8  43.6 -120.2   2.2267   1.7    2.9	GX 349+2                      
262.9857 -24.7073   10.4  33.7 -106.7   0.6716   1.1    2.6	GX 1+4                        
264.9576 -44.6119    0.0  43.1 -135.4  -1.4286  -1.9   13.4	4U 1735-44                    
268.2524  -1.4687    2.5  27.9  -60.6   1.8913   4.6    7.0	SW J1753.5-0127               
270.2523 -25.1472    2.5  27.9 -112.8   2.0824   4.7    4.4	GX 5-1                        
270.2284 -25.6854    9.4  28.1 -113.8   0.5809   1.3    5.3	GRS 1758-258                  
274.0069 -13.9917    1.5  20.8  -89.7   3.0223   7.8    2.7	GX 17+2                       
275.9245 -30.3236    4.5  26.9 -128.4   1.0755   2.6    2.6	H1820-303                     
284.9370 -24.9669    5.6  17.7 -135.5   0.7100   2.1    6.1	HT1900.1-2455                 
288.8246  10.9353    0.8  21.9   -3.2   5.3812  15.2    1.7	GRS 1915+105                  
299.5929  35.2080    0.4  45.5   18.5  24.4007  28.3    0.4	Cyg X-1                       
262.9962 -33.8020    4.0  37.7 -120.8   1.8801   2.9    2.0	GX 354-0                      
281.4515  11.2998    2.3  25.2  -19.3   1.7058   5.1 ------	UNKNOWN                       
277.3797 -23.8045    1.6  21.7 -118.4   2.3997   7.1 ------	UNKNOWN