batgrbproduct analysis for trigger=1236151

batgrbproduct Analysis for Trigger=1236151

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Tue Jun 11 06:24:18 EDT 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1236151/GCN5_download_cron
======================================================================

  Trigger: 01236151      Segment: 000

  BAT Trigger Time: 739697830.016   [s; MET]
      Trigger Stop: 739697832.064   [s; MET]
               UTC: 2024-06-10T07:36:36.411820    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 117.175538399408   Dec: -67.8040245620475  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.59
     Image Trigger?:     NO
     Rate S/N Ratio:     7.54983443527075  [ if not an image trigger ]
     Image S/N Ratio:    6.59

  Flight Position:   [ source = BAT ]
    RA: 117.175538399408   Dec: -67.8040245620475  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 117.083452445287   Dec: -67.7765321230064  [deg; J2000]  
        { 07h 48m 20.0s , -67d 46' 35.5" }
         +/- 2.73023154738839 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.60791507475584 [arcmin] (formal 1-sigma fit error)
    SNR: 7.24396369237364
 
  Angular difference between Flight and Ground position is 2.661357 arcmin
 
  Partial Coding Fraction: 0.9296875    [ including projection effects ]

  Duration
     T90: 8.06399989128113 +/- 2.52455459885648
        Measured from: -1.19199991226196
                   to: 6.87199997901917     [s; relative to TRIGTIME]
     T50: 3.90399980545044 +/- 1.90930368307382
        Measured from: 1.30400013923645
                   to: 5.20799994468689     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.899999976158142     
                   to: 1.89999997615814     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.44800007343292     
                   to: 7.89599990844727     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.227955   0.020520  -0.010652   0.010030
           0.020016   0.018916   0.015776   0.013745 [error]
 Peak      0.038258   0.005534  -0.002813   0.005530
           0.006630   0.006247   0.005224   0.004536 [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 5.87e-08 1.36e-08 1.61e-09 2.13e-10 7.40e-08 7.41e-08   erg/cm2
              Error 1.07e-08 7.02e-09 2.15e-09 5.15e-10 1.67e-08 1.68e-08   erg/cm2
Peak flux Power-law 2.72e-01 5.53e-02 5.59e-03 6.20e-04 3.33e-01 3.34e-01   ph/cm2/s
              Error 9.39e-02 5.35e-02 1.12e-02 2.97e-03 1.30e-01 1.31e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.65e-08 4.10e-09 4.70e-14 1.73e-26 7.06e-08 7.06e-08   erg/cm2
              Error 1.21e-08 5.98e-09 2.36e-10 0.00e+00 1.32e-08 1.32e-08   erg/cm2
Peak flux Cutoff-PL 3.41e-01 1.74e-02 1.12e-07 1.12e-20 3.58e-01 3.58e-01   ph/cm2/s
              Error 1.09e-01 2.43e-02 9.28e-05 0.00e+00 1.18e-01 1.18e-01   ph/cm2/s
 
Fluence        Band -------- 1.33e-08 -------- 1.04e-11 7.03e-08 7.00e-08   erg/cm2
              Error -------- 7.08e-09 -------- -------- -------- --------   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    5.073    0.856    -      -           1.51e-04 1.66e-04   58.970 57
CPL   1.000    0.000      50.0    0.0      2.89e-03 0.00e+00  121.210 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    4.297    1.413    -      -           4.15e-04 6.34e-04   57.480 57
CPL   1.000    0.000      50.0    0.0      5.13e-03 0.00e+00   72.830 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.344   -1.448    7.896
T90     8.064   -1.192    6.872
T50     3.904    1.304    5.208
Peak    1.000    0.900    1.900
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte

    Image

    Pre-slew 15-350 keV image (Event data; bkg subtracted)

    #   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
      117.0835 -67.7765 0.0265   11.0   60.5       0.2649     7.2  TRIG_01236151       
    ------------------------------------------
     
    Foreground time interval of the image:
     -1.448   7.896 (delta_t =   9.344 [sec])
    Background time interval of the image:
    -239.016 -55.626 (delta_t = 183.390 [sec])
    -55.016  -1.448 (delta_t =  53.568 [sec])
    

    Lightcurves

    Notes:

    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)

    Spectra

    Notes:

    Time averaged spectrum fit using the pre-slew DRM

    Power-law model
    Time interval is from   -1.448 sec. to    7.896 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 5.07272     ( -0.780194   0.932159 )
    Norm@50keV  : 1.50518E-04    ( -0.000150441   0.000181505 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.97 using 59 PHA bins.
    # Reduced chi-squared =          1.034 for     57 degrees of freedom 
    # Null hypothesis probability =   4.034820e-01
     
    Photon flux (15-150 keV)    in 9.344 sec: 0.248979 ( -0.0478172  0.0481361 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.40367e-08 ( -1.61257e-08  1.72511e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -1.448 sec. to    7.896 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00000     (     )
    Epeak [keV] : 50.0000      (   )
    Norm@50keV  : 2.88773E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         121.21 using 59 PHA bins.
    # Reduced chi-squared =         2.1645 for     56 degrees of freedom 
    # Null hypothesis probability =   1.039878e-06
     
    Photon flux (15-150 keV)    in 9.344 sec: 0.247290 0.255800 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.05933e-08 ( -1.30219e-08  1.33431e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -1.448 sec. to    7.896 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 3.62403   ( -8.53842   5.03914 )
    beta        : -10.0000    ( 10   10 )
    Epeak [keV] : 12.5854      ( -2.84469 1.67144 )
    Norm@50keV   : 4027.67    ( -709.852   62389.7 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.41 using 59 PHA bins.
    # Reduced chi-squared =          1.007 for     55 degrees of freedom 
    # Null hypothesis probability =   4.592996e-01
     
    Photon flux (15-150 keV)    in 9.344 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.03443e-08 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 2.75377  (-0.425584  0.505784)
    R^2/D10^2   : 63.8938  (-63.896   140.434)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.72 using 59 PHA bins.
    # Reduced chi-squared =         0.9775 for     57 degrees of freedom 
    # Null hypothesis probability =   5.231996e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.426e-08   3.549e-08
    25- 50  6.876e-09   4.392e-09
    50-150  5.354e-12   5.985e-12
    15-150  7.114e-08   3.905e-08
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 5.36749       (-1.27653      1.83403)
    Norm        : 45.3694       (-26.4661     74.866)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.226e-08   3.248e-08
    25- 50  9.201e-09   5.666e-09
    50-150  6.740e-11   7.788e-11
    15-150  7.153e-08   3.993e-08
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 2.75054        (-2.75189      -2.75189)
    R1^2/D10^2  : 29.5675        (-29.7212      -29.7212)
    kT2 [keV]   : 2.76032        (-2.75419      -2.75419)
    R2^2/D10^2  : 34.0100    (-34.1649   -34.1649)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.426e-08   1.241e+02
    25- 50  6.895e-09   1.052e+03
    50-150  5.405e-12   2.851e+04
    15-150  7.116e-08   2.611e+04
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.900 sec. to    1.900 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 4.29716     ( -1.15645   1.66961 )
    Norm@50keV  : 4.15497E-04    ( -0.000412578   0.000855627 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.48 using 59 PHA bins.
    # Reduced chi-squared =          1.008 for     57 degrees of freedom 
    # Null hypothesis probability =   4.573755e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.333211 ( -0.127943  0.132969 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.1428e-08 ( -5.02325e-09  6.34752e-09 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.900 sec. to    1.900 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00000     (     )
    Epeak [keV] : 50.0000      (   )
    Norm@50keV  : 5.13030E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          72.83 using 59 PHA bins.
    # Reduced chi-squared =          1.300 for     56 degrees of freedom 
    # Null hypothesis probability =   6.482826e-02
     
    Photon flux (15-150 keV)    in 1 sec: 0.358313 0.359580 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.15537e-16 ( 0  0 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.900 sec. to    1.900 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 3.20155   ( 1.66191   1.66191 )
    beta        : -10.0000    ( 10   10 )
    Epeak [keV] : 13.3877      ( -3.10762 4.19262 )
    Norm@50keV   : 1195.98    ( -389.271   44285.5 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.89 using 59 PHA bins.
    # Reduced chi-squared =         0.9980 for     55 degrees of freedom 
    # Null hypothesis probability =   4.787994e-01
     
    Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     XSPEC: quit
     
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 3.03843  (-0.765497  1.0538)
    R^2/D10^2   : 44.8991  (-45.2294   242.02)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.080e-09   5.160e-09
    25- 50  1.383e-09   8.865e-10
    50-150  2.469e-12   2.895e-12
    15-150  1.047e-08   6.095e-09
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 6.60329       (-2.6981      5.96875)
    Norm        : 31.5678       (-31.4315     128.007)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.565e-09   4.992e-09
    25- 50  1.914e-09   1.401e-09
    50-150  3.401e-11   4.770e-11
    15-150  1.051e-08   6.270e-09
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.03433        (-0.767225      1.05206)
    R1^2/D10^2  : 45.2782        (-45.2783      242.941)
    kT2 [keV]   : 0.149242        (-0.149242      -0.149242)
    R2^2/D10^2  : 1.36221E-02    (-0.0136221   -0.0136221)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    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: 5.07272     ( -0.780194   0.932159 )
    Norm@50keV  : 1.50518E-04    ( -0.000150441   0.000181505 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.97 using 59 PHA bins.
    # Reduced chi-squared =          1.034 for     57 degrees of freedom 
    # Null hypothesis probability =   4.034820e-01
     
    Photon flux (15-150 keV)    in 9.344 sec: 0.248979 ( -0.0478172  0.0481361 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.40367e-08 ( -1.61257e-08  1.72511e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00000     (     )
    Epeak [keV] : 50.0000      (   )
    Norm@50keV  : 2.88773E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         121.21 using 59 PHA bins.
    # Reduced chi-squared =         2.1645 for     56 degrees of freedom 
    # Null hypothesis probability =   1.039878e-06
     
    Photon flux (15-150 keV)    in 9.344 sec: 0.247290 0.255800 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.05933e-08 ( -1.30219e-08  1.33431e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 3.62403   ( -8.53842   5.03914 )
    beta        : -10.0000    ( 10   10 )
    Epeak [keV] : 12.5854      ( -2.84469 1.67144 )
    Norm@50keV   : 4027.67    ( -709.852   62389.7 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.41 using 59 PHA bins.
    # Reduced chi-squared =          1.007 for     55 degrees of freedom 
    # Null hypothesis probability =   4.592996e-01
     
    Photon flux (15-150 keV)    in 9.344 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 7.03443e-08 ( 0  0 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 1.36e-08
    S(50-100 keV) = 1.61e-09
    

    T90 vs. Hardness ratio plot

    T90                                   = 8.06399989128113 sec.
    Hardness ratio (energy fluence ratio) = 0.118382
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.0900178
    Count Ratio (50-100 keV) / (15-25 keV) = -0.0467285
    

    Mask shadow pattern

    IMX = 9.591202644786639E-02, IMY = -1.694491721669785E-01
    

    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:
    -239.016000 -55.626000
    -55.016000 -1.448000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5524 -40.5377    3.5  30.6  -12.1   1.2229   3.3    1.5	Vela X-1                      
    170.4324 -60.7877    6.1  33.8   44.5  -1.1917  -1.9   10.5	Cen X-3                       
    186.7403 -62.7818    7.8  38.9   54.8   1.3460   1.5    2.4	GX 301-2                      
    189.7229 -77.5074    3.3  32.2   77.5   2.5568   3.6 ------	UNKNOWN                       
    149.6430 -22.7455    2.5  52.0  -11.3   3.2100   4.7 ------	UNKNOWN                       
     29.5170 -24.6848    2.6  58.0 -162.5   7.8640   4.5 ------	UNKNOWN                       
     31.9263 -24.3013    2.1  57.2 -160.1   8.5600   5.6 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -1.448000 7.896000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.7909 -40.5580    5.6  30.7  -11.8  -0.0806  -2.1   12.0	Vela X-1                      
    170.2364 -60.5604   24.0  33.8   44.1   0.0297   0.5    4.4	Cen X-3                       
    186.6627 -62.7760    7.4  38.9   54.7  -0.1422  -1.6    0.4	GX 301-2                      
    117.0834 -67.7765    1.6  11.0   60.5   0.2649   7.2 ------	UNKNOWN                       
    140.9638 -37.0861    2.8  35.8   -9.5   0.1731   4.1 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    67.384590 130.054000
    130.984000 951.444000
    952.984000 963.084100
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5259 -40.5589    2.1  29.0  -25.5   7.4743   5.5    0.3	Vela X-1                      
    170.3150 -60.6232   18.1  23.4   43.2  -1.0240  -0.6    0.0	Cen X-3                       
    186.6851 -62.6764    5.8  28.0   58.5   4.3310   2.0    5.7	GX 301-2                      
    209.2122 -66.8992    2.8  32.2   77.6  11.1374   4.1 ------	UNKNOWN                       
    115.0106 -22.1751    3.4  45.6  -57.8  20.8576   3.4 ------	UNKNOWN                       
    
    Plot creation:
    Tue Jun 11 06:27:46 EDT 2024