batgrbproduct analysis for trigger=1403191

batgrbproduct Analysis for Trigger=1403191

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 v2.48
    Process Start Time (local time): Sat Feb 28 20:57:04 EST 2026
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1403191
======================================================================

  Trigger: 01403191      Segment: 000

  BAT Trigger Time: 781859338.816   [s; MET]
      Trigger Stop: 781859339.84   [s; MET]
               UTC: 2025-10-11T07:08:22.332060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 13.2873308078826   Dec: -62.0323175977837  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.44
     Image Trigger?:     NO
     Rate S/N Ratio:     32.1403173599764  [ if not an image trigger ]
     Image S/N Ratio:    10.44

  Flight Position:   [ source = BAT ]
    RA: 13.2873308078826   Dec: -62.0323175977837  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 13.2443447407312   Dec: -62.0382947578231  [deg; J2000]  
        { 00h 52m 58.6s , -62d 02' 17.9" }
         +/- 1.05482943974627 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.361061333443615 [arcmin] (formal 1-sigma fit error)
    SNR: 28.1838871407539
 
  Angular difference between Flight and Ground position is 1.261492 arcmin
 
  Partial Coding Fraction: 0.46875    [ including projection effects ]

  Duration
     T90: 40.9919999837875 +/- 9.07093142055324
        Measured from: -3.96000003814697
                   to: 37.0319999456406     [s; relative to TRIGTIME]
     T50: 15.7359999418259 +/- 2.70249957796529
        Measured from: 0.675999999046326
                   to: 16.4119999408722     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.199999928474426     
                   to: 0.800000071525574     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.432000041008     
                   to: 52.0640000104904     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.211783   1.383229   0.838938   0.147908
           0.063904   0.066881   0.056518   0.046119 [error]
 Peak      0.079345   0.101683   0.078549   0.013715
           0.010026   0.011027   0.009451   0.006946 [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 3.96e-07 5.81e-07 6.38e-07 1.31e-06 2.01e-06 2.92e-06   erg/cm2
              Error 3.59e-08 3.30e-08 5.54e-08 2.35e-07 1.28e-07 2.86e-07   erg/cm2
Peak flux Power-law 8.33e-01 7.81e-01 5.08e-01 5.10e-01 2.33e+00 2.63e+00   ph/cm2/s
              Error 1.49e-01 8.90e-02 7.68e-02 1.54e-01 2.61e-01 2.95e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.80e-07 5.98e-07 6.38e-07 8.05e-07 1.96e-06 2.42e-06   erg/cm2
              Error 4.15e-08 4.12e-08 5.82e-08 4.67e-07 1.45e-07 5.03e-07   erg/cm2
Peak flux Cutoff-PL 7.96e-01 8.08e-01 5.19e-01 3.50e-01 2.31e+00 2.47e+00   ph/cm2/s
              Error 1.72e-01 1.10e-01 8.37e-02 2.05e-01 2.68e-01 3.86e-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    1.871    0.106    -      -           3.81e-03 2.42e-04   56.140 57
CPL   1.571    0.397      66.3  -24.7      5.50e-03 2.79e-03   54.440 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.621    0.192    -      -           1.80e-02 2.13e-03   46.710 57
CPL   1.311    0.668     106.9  -28.8      2.62e-02 2.81e-02   46.200 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: 20.224000 sec.
T50 in the 50-300 keV band: 7.040000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   57.496   -5.432   52.064
T90    40.992   -3.960   37.032
T50    15.736    0.676   16.412
Peak    1.000   -0.200    0.800

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   13.2443   -62.0383   0.0068    28.3632   -85.6257         2.7417282     28.184 TRIG_01403191                 
 
Foreground time interval of the image:
 -5.432  19.485 (delta_t =  24.917 [sec])
Background time interval of the image:
-239.816  -5.432 (delta_t = 234.384 [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 1.024000

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 1.024000

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 1.024000

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   -5.432 sec. to   52.064 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87105     ( -0.105131   0.107265 )
Norm@50keV  : 3.80536E-03    ( -0.000243168   0.000240774 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.14     using 59 bins.
 Reduced chi-squared = 0.984912
# Null hypothesis probability of 5.07e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 57.5 sec: 0.539552 ( -0.031373  0.031419 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.01186e-06 ( -1.27745e-07  1.28701e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.432 sec. to   52.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57086     ( -0.430069   0.363014 )
Epeak [keV] : 66.2836      ( -16.7955 -66.2836 )
Norm@50keV  : 5.50408E-03    ( -0.00184434   0.00373791 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.44     using 59 bins.
 Reduced chi-squared = 0.972143
# Null hypothesis probability of 5.34e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 57.5 sec: 0.531113 ( -0.033192  0.033199 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.95928e-06 ( -1.44404e-07  1.45017e-07 ) ergs/cm2

Band function

Time interval is from   -5.432 sec. to   52.064 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 11.6878  (  )
R^2/D10^2   : 0.136702  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  131.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.26e-08 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.265e-07   2.228e-08
25- 50  6.908e-07   4.772e-08
50-150  5.573e-07   7.475e-08
15-150  1.475e-06   9.487e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 91.3275       (-16.9739      23.8494)
Norm        : 2.41096       (-0.204795     0.230715)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.57     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.29e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.619e-07   3.637e-08
25- 50  6.140e-07   3.565e-08
50-150  9.434e-07   2.881e-07
15-150  1.919e-06   3.004e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.89067        (-1.00091      1.11117)
R1^2/D10^2  : 1.23805        (-0.573446      1.30239)
kT2 [keV]   : 21.0758        (-3.31501      4.99088)
R2^2/D10^2  : 1.14383E-02    (-0.00643262   0.0113275)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.92     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.78e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.746e-07   7.731e-08
25- 50  5.900e-07   9.410e-08
50-150  9.662e-07   2.701e-07
15-150  1.931e-06   3.944e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.200 sec. to    0.800 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62079     ( -0.190117   0.194739 )
Norm@50keV  : 1.80248E-02    ( -0.00214348   0.00211601 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.71     using 59 bins.
 Reduced chi-squared = 0.819474
# Null hypothesis probability of 8.33e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.33151 ( -0.26048  0.26067 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.68182e-07 ( -2.1286e-08  2.15235e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.200 sec. to    0.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31140     ( -0.852233   0.483552 )
Epeak [keV] : 106.915      ( -49.2176 -106.915 )
Norm@50keV  : 2.62468E-02    ( -0.0101228   0.0460774 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.20     using 59 bins.
 Reduced chi-squared = 0.825
# Null hypothesis probability of 8.22e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.30628 ( -0.26873  0.26714 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.64305e-07 ( -2.3282e-08  2.33283e-08 ) ergs/cm2

Band function

Time interval is from   -0.200 sec. to    0.800 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 13.6439  (-1.77495  2.08464)
R^2/D10^2   : 0.364331  (-0.146157   0.237538)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   65.00     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.18e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.436e-08   3.347e-09
25- 50  5.202e-08   8.575e-09
50-150  6.291e-08   1.588e-08
15-150  1.293e-07   1.870e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 160.224       (-64.4952      -162.459)
Norm        : 9.58110       (-1.14756     1.36246)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.23     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.45e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.446e-08   1.345e-08
25- 50  4.577e-08   2.431e-08
50-150  9.277e-08   5.310e-08
15-150  1.630e-07   8.328e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.97270        (-1.86768      3.25162)
R1^2/D10^2  : 8.08299        (-6.61096      59.7126)
kT2 [keV]   : 19.6321        (-4.12485      10.8677)
R2^2/D10^2  : 8.32499E-02    (-0.0679693   0.123473)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.06     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.68e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.546e-08   1.336e-08
25- 50  4.304e-08   1.700e-08
50-150  8.782e-08   4.108e-08
15-150  1.563e-07   5.906e-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: 1.78637     ( -0.100482   0.101981 )
Norm@50keV  : 6.94361E-03    ( -0.00040568   0.000402516 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.82     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.00e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 24.92 sec: 0.951805 ( -0.0530642  0.0532001 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.5938e-06 ( -9.52574e-08  9.57935e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72015     ( -0.375468   0.3674 )
Epeak [keV] : 204.339      ( -137.041 -204.338 )
Norm@50keV  : 7.51512E-03    ( -0.00202486   0.00409806 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   43.72     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.84e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 24.92 sec: 0.948164 ( -0.056094  0.055366 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.58579e-06 ( -1.05947e-07  1.02379e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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)  = 5.81e-07
S(50-100 keV) = 6.38e-07

T90 vs. Hardness ratio plot

T90                                   = 40.9919999837875 sec.
Hardness ratio (energy fluence ratio) = 1.09811

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.14148
Count Ratio (50-100 keV) / (15-25 keV) = 0.692317

Mask shadow pattern

IMX = 4.117690108531410E-02, IMY = 5.382960737307498E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-239.816000 -5.432000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 69.3694 -13.7247    2.1  48.7  165.1   5.1703   5.5 ------	UNKNOWN                       
325.3507 -14.7167    4.6  53.0    4.6   2.5069   2.5 ------	UNKNOWN                       
333.2898 -36.9719    2.8  38.0  -20.9   1.7942   4.2 ------	UNKNOWN                       
 49.5164 -49.8553    2.3  26.6 -137.2   1.8046   5.0 ------	UNKNOWN                       
358.4204 -65.8752    2.2  34.4  -77.0   3.0144   5.1 ------	UNKNOWN

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

Time interval of the image:
-5.432000 19.484600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 64.2305  -2.8977    3.2  51.4  149.9   1.0837   3.6 ------	UNKNOWN                       
 13.2443 -62.0383    0.4  28.4  -85.6   2.7417  28.2 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
84.684600 462.384600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
301.6755 -35.6507    3.0  50.6   -7.0   3.3646   3.9 ------	UNKNOWN                       
 29.7038 -74.1727    2.8  13.5 -112.9   1.9215   4.1 ------	UNKNOWN                       
128.0550 -58.6468    2.8  49.3 -132.1   8.6812   4.1 ------	UNKNOWN

Plot creation:
Sun Mar  1 23:18:43 EST 2026