GRB070330

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: Mon Jan 20 10:57:12 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger273180
======================================================================

  Trigger: 00273180      Segment: 000

  BAT Trigger Time: 196987893.056   [s; MET]
      Trigger Stop: 196987894.08   [s; MET]
               UTC: 2007-03-30T22:51:31.197520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 269.519312152181   Dec: -63.7791777282201  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.25
     Image Trigger?:     NO
     Rate S/N Ratio:     12.2065556157337  [ if not an image trigger ]
     Image S/N Ratio:    10.25

  Analysis Position:   [ source = BAT ]
    RA: 269.519312152181   Dec: -63.7791777282201  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 269.556921765861   Dec: -63.805890499519  [deg; J2000]  
        { 17h 58m 13.7s , -63d 48' 21.2" }
         +/- 1.6890403687652 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.655310049883729 [arcmin] (formal 1-sigma fit error)
    SNR: 14.3852806048393
 
  Angular difference between the analysis and refined position is 1.887322 arcmin
 
  Partial Coding Fraction: 0.796875    [ including projection effects ]

  Duration
     T90: 6.63999998569489 +/- 0.669148709519023
        Measured from: -1.05199998617172
                   to: 5.58799999952316     [s; relative to TRIGTIME]
     T50: 2.72800001502037 +/- 0.645330916429098
        Measured from: 0.247999995946884
                   to: 2.97600001096725     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0160000026226044     
                   to: 0.983999997377396     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.40399998426437     
                   to: 5.716000020504     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.120353   0.186504   0.071104   0.022462
           0.016126   0.015305   0.012741   0.010478 [error]
 Peak      0.030750   0.049012   0.019922   0.007008
           0.006274   0.006010   0.004853   0.003880 [error]

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

======================================================================
 
 
====== Table of the duration information =============================
 
        Value   tstart    tstop
T100    7.120   -1.404    5.716
T90     6.640   -1.052    5.588
T50     2.728    0.248    2.976
Peak    1.000   -0.016    0.984
 
 
====== 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: N/A)
 
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      -1.883    -0.192      0.185       -           -               -         3.21e-03     -4.25e-04          4.19e-04      76.850   57
CPL      0.668    -1.328      2.074       39.612      -4.927         7.506      1.14e-01     -1.14e-01          2.30e+00      62.290   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      -1.820     -0.276     0.263       -           -               -         6.32e-03     -1.15e-03          1.13e-03      57.230   57
CPL     -0.153     -1.462     2.171       45.704      -9.540        39.085      5.84e-02     -5.84e-02          1.07e+00      53.310   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   4.19e-08  6.10e-08  6.61e-08  1.34e-07  2.10e-07  3.03e-07   erg/cm2
      90%_error_low -6.46e-09 -6.85e-09 -1.14e-08 -4.04e-08 -2.73e-08 -5.46e-08   erg/cm2
      90%_error_hi   6.62e-09  6.84e-09  1.17e-08  5.07e-08  2.78e-08  6.24e-08   erg/cm2
Peak flux       PL   3.54e-01  2.95e-01  1.67e-01  1.40e-01  8.79e-01  9.57e-01   ph/cm2/s
      90%_error_low -8.07e-02 -4.70e-02 -3.84e-02 -5.35e-02 -1.40e-01 -1.53e-01   ph/cm2/s
      90%_error_hi   8.45e-02  4.70e-02  3.88e-02  7.02e-02  1.40e-01  1.53e-01   ph/cm2/s
 
Fluence        CPL   3.61e-08  7.92e-08  4.77e-08  4.44e-09  1.67e-07  1.67e-07   erg/cm2
      90%_error_low -7.43e-09 -1.10e-08 -2.02e-08    N/A    -2.60e-08 -2.63e-08   erg/cm2
      90%_error_hi   7.48e-09  1.14e-08  1.92e-08    N/A     3.02e-08  3.33e-08   erg/cm2
Peak flux      CPL   3.02e-01  3.54e-01  1.59e-01  2.20e-02  8.35e-01  8.38e-01   ph/cm2/s
      90%_error_low -9.54e-02 -6.96e-02 -5.72e-02 -2.20e-02 -1.45e-01 -1.47e-01   ph/cm2/s
      90%_error_hi   9.72e-02  7.41e-02  4.95e-02  8.55e-02  1.46e-01  1.54e-01   ph/cm2/s
 
======================================================================

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
  269.5569   -63.8059   0.0134    18.6060   -68.8529         0.4012042     14.385 TRIG_00273180                 
 
Foreground time interval of the image:
 -1.404   5.716 (delta_t =   7.120 [sec])
Background time interval of the image:
-239.056  -1.404 (delta_t = 237.652 [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:

64 ms binning (zoomed)
16 ms binning (zoomed)
8 ms binning (zoomed)
2 ms binning (zoomed)
SN=5 or 10 s binning (full-time range)
Raw light curve

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   -1.404 sec. to    5.716 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.88303     ( -0.191733   0.1851 )
Norm@50keV  : 3.21230E-03    ( -0.000424739   0.00041944 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.85 using 59 PHA bins.
# Reduced chi-squared =          1.348 for     57 degrees of freedom 
# Null hypothesis probability =   4.097095e-02
 
Photon flux (15-150 keV)    in 7.12 sec: 0.457746 ( -0.051523  0.051544 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10281e-07 ( -2.73106e-08  2.78416e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.404 sec. to    5.716 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.667977     ( -1.33956   2.06172 )
Epeak [keV] : 39.6117      ( -4.83471 7.59876 )
Norm@50keV  : 0.113707    ( -0.118969   2.29651 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.29 using 59 PHA bins.
# Reduced chi-squared =          1.112 for     56 degrees of freedom 
# Null hypothesis probability =   2.623111e-01
 
Photon flux (15-150 keV)    in 7.12 sec: 0.426755 ( -0.052326  0.052731 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67121e-07 ( -2.60197e-08  3.01671e-08 ) ergs/cm2

1-s peak spectrum fit

Power-law model

Time interval is from   -0.016 sec. to    0.984 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.82041     ( -0.275823   0.262731 )
Norm@50keV  : 6.32465E-03    ( -0.00115297   0.00112919 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.23 using 59 PHA bins.
# Reduced chi-squared =          1.004 for     57 degrees of freedom 
# Null hypothesis probability =   4.666259e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.878559 ( -0.140255  0.140371 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.81983e-08 ( -1.05541e-08  1.07828e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.016 sec. to    0.984 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.152738     ( -1.46467   2.16776 )
Epeak [keV] : 45.7044      ( -9.51629 39.1089 )
Norm@50keV  : 5.83783E-02    ( -0.0587746   1.06994 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.31 using 59 PHA bins.
# Reduced chi-squared =         0.9520 for     56 degrees of freedom 
# Null hypothesis probability =   5.772990e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.834739 ( -0.144678  0.145613 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.00853e-08 ( -1.07158e-08  1.25444e-08 ) ergs/cm2

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

T90                                   = N/A sec.
Hardness ratio (energy fluence ratio) = N/A

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

S(15-50 keV)  = N/A
S(50-150 keV) = N/A

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 = 1.214525430920516E-01,

Spacecraft aspect plot

Bright

Pre-burst

 Time interval of the image: -239.056000 -1.404000

# RAcent #  [deg] 170.3293 -60.6700 186.6740 -62.7666 244.9744 -15.6360 255.7643 -37.9299 256.3753 -36.3870 263.1073 -24.7554 264.8093 -44.5929 268.4326  -1.4556 270.1993 -24.9225 270.2817 -25.7195 274.1016 -14.0019 275.9046 -30.4423 284.9013 -25.0362 263.0008 -33.7670 285.5868 -47.8466 284.6095  -2.3423 297.4439 -19.9970

Pre-slew

 Time interval of the image: -1.404000 5.716000

# RAcent #  [deg] 170.4322 -60.5077 186.3074 -62.6697 244.7676 -15.6973 256.1024 -37.9232 256.5266 -36.5256 262.8608 -24.8549 264.9106 -44.5674 268.4296  -1.5401 270.4246 -25.0974 270.2267 -25.5663 273.8743 -14.1198 275.9546 -30.2236 285.1401 -24.8742 263.1825 -33.7933 170.1975 -47.3859 267.5623 -30.1719 269.5569 -63.8059

Post-slew

 Time interval of the image: 52.044610 808.044600

# RAcent #  [deg] 170.3533 -60.6744 186.6434 -62.7598 255.9641 -37.8432 256.5661 -36.4109 263.0031 -24.7292 264.7624 -44.4332 270.2093 -25.1285 270.2587 -25.7475 274.1026 -14.0788 276.0662 -30.5223 285.1108 -24.9918 262.8696 -33.7655 251.4864 -45.5979 97.4011 -71.4810 307.2384 -44.3064 344.2546 -53.3979 20.4103 -56.7917 342.3738 -48.1350

IMY = 3.139821132370270E-01 source in the pre-burst/pre-slew/post-slew images

image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 2.4 40.2 14.4 1.4315 4.8 2.9 Cen X-3 0.8 32.2 14.0 3.2860 15.0 0.5 GX 301-2 0.5 35.3 149.3 7.6205 23.1 0.4 Sco X-1 4.8 15.4 -175.2 0.4596 2.4 11.7 4U 1700-377 1.7 17.0 -176.3 1.2321 6.9 3.6 GX 349+2 3.2 30.0 -175.9 0.6565 3.6 5.4 GX 1+4 6.2 15.3 -138.7 0.3163 1.9 9.0 4U 1735-44 6.0 53.6 178.6 1.1637 1.9 3.9 SW J1753.5-0127 6.9 32.8 -164.8 0.3488 1.7 10.5 GX 5-1 2.4 32.2 -163.9 0.9945 4.9 1.8 GRS 1758-258 4.1 44.2 -168.1 0.8961 2.8 5.9 GX 17+2 7.4 31.3 -151.0 0.3090 1.6 4.6 H1820-303 441.4 40.5 -146.4 0.0076 0.0 10.1 HT1900.1-2455 3.2 22.0 -166.2 0.6806 3.6 4.1 GX 354-0 2.3 26.9 -112.4 1.2107 5.2 ------ UNKNOWN 4.2 59.3 -163.2 4.0533 2.8 ------ UNKNOWN 2.7 51.8 -138.5 4.1197 4.3 ------ UNKNOWN background subtracted image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 7.9 40.2 14.7 0.0585 1.5 7.7 Cen X-3 0.0 32.4 14.1 0.0740 2.4 11.3 GX 301-2 4.5 35.2 148.9 -0.1033 -2.6 12.7 Sco X-1 3.7 15.6 -174.4 0.0757 3.1 7.3 4U 1700-377 5.6 16.9 -175.7 -0.0496 -2.1 7.6 GX 349+2 7.6 29.8 -176.2 0.0470 1.5 10.4 GX 1+4 12.1 15.3 -138.7 -0.0231 -0.9 10.1 4U 1735-44 14.6 53.5 178.6 -0.0656 -0.8 6.4 SW J1753.5-0127 9.5 32.8 -164.3 -0.0358 -1.2 7.7 GX 5-1 7.2 32.3 -164.1 0.0473 1.7 11.4 GRS 1758-258 3.0 44.0 -168.3 0.1614 3.9 9.1 GX 17+2 8.8 31.4 -151.2 0.0398 1.3 8.7 H1820-303 9.9 40.8 -146.3 -0.0475 -1.2 6.3 HT1900.1-2455 6.2 22.1 -165.8 0.0494 1.9 10.0 GX 354-0 2.3 46.4 31.7 0.3691 5.0 ------ UNKNOWN 2.2 27.1 -163.2 0.1343 5.3 ------ UNKNOWN 0.8 18.6 -68.9 0.4012 14.4 ------ UNKNOWN image of 15-350 keV band DECcent POSerr Theta Phi PeakCts SNR AngSep Name [deg] ['] [deg] [deg] ['] 3.8 41.6 39.9 3.0516 3.1 3.3 Cen X-3 0.6 34.6 46.2 11.7013 18.7 0.7 GX 301-2 5.0 27.2 149.3 1.0850 2.3 1.1 4U 1700-377 4.0 28.5 151.0 1.4472 2.9 6.3 GX 349+2 3.0 39.3 163.8 2.7206 3.8 1.0 GX 1+4 4.9 19.5 163.0 0.8921 2.3 1.3 4U 1735-44 3.0 38.7 174.2 2.0820 3.8 5.0 GX 5-1 2.7 38.0 174.3 2.3264 4.3 2.4 GRS 1758-258 11.9 49.8 179.0 0.8656 1.0 6.2 GX 17+2 0.0 33.5 -176.6 0.8500 2.0 11.8 H1820-303 10.5 40.1 -164.6 0.6602 1.1 5.9 HT1900.1-2455 5.0 30.3 162.2 1.1075 2.3 7.3 GX 354-0 2.1 20.8 135.6 2.1415 5.4 ------ UNKNOWN 3.6 44.6 -3.3 2.6666 3.2 ------ UNKNOWN 3.1 28.8 -121.3 1.9342 3.6 ------ UNKNOWN 4.8 37.9 -76.4 2.6626 2.4 ------ UNKNOWN 3.3 48.4 -50.0 10.0715 3.6 ------ UNKNOWN 3.4 41.0 -83.4 7.7586 3.4 ------ UNKNOWN

Analysis Summary

Notes:

Image

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

Light Curves

Full-time range; 1 s binning

Other quick-look light curves:

64 ms binning (zoomed) 16 ms binning (zoomed) 8 ms binning (zoomed) 2 ms binning (zoomed) SN=5 or 10 s binning (full-time range) Raw light curve

Spectra

Notes:

Time averaged spectrum fit using the average DRM

Power-law model

Cutoff power-law model

1-s peak spectrum fit

Power-law model

Cutoff power-law model

Time-resolved spectra

Distribution

T90 vs. Hardness ratio plot

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

Mask shadow pattern

Spacecraft aspect plot

Bright

64 ms binning (zoomed)
16 ms binning (zoomed)
8 ms binning (zoomed)
2 ms binning (zoomed)
SN=5 or 10 s binning (full-time range)
Raw light curve