batgrbproduct analysis for trigger=1054627

batgrbproduct Analysis for Trigger=1054627

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): Fri Jul 29 23:06:24 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1054627
======================================================================

  Trigger: 01054627      Segment: 000

  BAT Trigger Time: 645030250.56   [s; MET]
      Trigger Stop: 645030251.584   [s; MET]
               UTC: 2021-06-10T15:03:43.387320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 204.285446740885   Dec: 14.4803131180607  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.79
     Image Trigger?:     NO
     Rate S/N Ratio:     18.8148877222268  [ if not an image trigger ]
     Image S/N Ratio:    7.79

  Flight Position:   [ source = BAT ]
    RA: 204.285446740885   Dec: 14.4803131180607  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 204.284016860347   Dec: 14.4756955581358  [deg; J2000]  
        { 13h 37m 08.2s , +14d 28' 32.5" }
         +/- 1.70591992025749 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.647891043698896 [arcmin] (formal 1-sigma fit error)
    SNR: 14.1823726816602
 
  Angular difference between Flight and Ground position is 0.289239 arcmin
 
  Partial Coding Fraction: 0.265625    [ including projection effects ]

  Duration
     T90: 13.6160000562668 +/- 3.15130957354563
        Measured from: -4.69599997997284
                   to: 8.92000007629395     [s; relative to TRIGTIME]
     T50: 4.25599992275238 +/- 1.25628024155385
        Measured from: -1.76799988746643
                   to: 2.48800003528595     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.291999936103821     
                   to: 0.708000063896179     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.97599995136261     
                   to: 11.3519999980927     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.432041   0.490455   0.475982   0.151034
           0.052513   0.055938   0.048528   0.040521 [error]
 Peak      0.083854   0.103429   0.094521   0.018671
           0.014870   0.016417   0.013957   0.010971 [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 1.27e-07 2.46e-07 3.71e-07 1.20e-06 1.04e-06 1.94e-06   erg/cm2
              Error 2.43e-08 2.80e-08 4.82e-08 3.49e-07 1.18e-07 3.80e-07   erg/cm2
Peak flux Power-law 8.35e-01 8.37e-01 5.89e-01 6.57e-01 2.52e+00 2.92e+00   ph/cm2/s
              Error 2.16e-01 1.38e-01 1.13e-01 2.54e-01 3.96e-01 4.54e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.27e-07 2.43e-07 3.71e-07 1.31e-06 1.05e-06 1.94e-06   erg/cm2
              Error -------- 3.80e-08 -------- 4.55e-07 1.58e-07 4.71e-07   erg/cm2
Peak flux Cutoff-PL 7.91e-01 8.65e-01 6.09e-01 4.67e-01 2.50e+00 2.73e+00   ph/cm2/s
              Error 2.50e-01 1.63e-01 1.30e-01 3.66e-01 4.02e-01 5.64e-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    1.413    0.186    -      -           6.23e-03 6.44e-04   66.110 57
CPL   1.408    0.187    9999.1    0.0      6.25e-03 4.78e-03   66.130 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.507    0.257    -      -           2.01e-02 3.17e-03   47.960 57
CPL   1.196    0.835     131.9    0.0      2.90e-02 5.10e-02   47.650 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: 5.632000 sec.
T50 in the 50-300 keV band: 2.624000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   17.328   -5.976   11.352
T90    13.616   -4.696    8.920
T50     4.256   -1.768    2.488
Peak    1.000   -0.292    0.708

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
  204.2840    14.4757   0.0136    35.7802    49.3752         1.5435991     14.182 TRIG_01054627                 
 
Foreground time interval of the image:
 -5.976  11.352 (delta_t =  17.328 [sec])
Background time interval of the image:
-239.560  -5.976 (delta_t = 233.584 [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   -5.976 sec. to   11.352 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41325     ( -0.186704   0.185768 )
Norm@50keV  : 6.23186E-03    ( -0.000645462   0.00064323 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.11     using 59 bins.
 Reduced chi-squared = 1.15982
# Null hypothesis probability of 1.91e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 17.33 sec: 0.761253 ( -0.081518  0.081815 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.0409e-06 ( -1.17799e-07  1.18435e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.976 sec. to   11.352 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40773     ( -0.185664   0.189003 )
Epeak [keV] : 9999.09      ( -9999.36 -9999.36 )
Norm@50keV  : 6.25468E-03    ( -0.00625435   0.00330818 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.13     using 59 bins.
 Reduced chi-squared = 1.18089
# Null hypothesis probability of 1.67e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 17.33 sec: 0.766006 ( -0.116122  0.106623 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04623e-06 ( -1.62688e-07  1.52655e-07 ) ergs/cm2

Band function

Time interval is from   -5.976 sec. to   11.352 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]    : 17.4215  (-2.63433  3.23265)
R^2/D10^2   : 5.07031E-02  (-0.0222303   0.038717)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  102.81     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.92e-04 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.394e-08   1.122e-08
25- 50  2.433e-07   4.514e-08
50-150  5.312e-07   1.109e-07
15-150  8.284e-07   1.084e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-44.6833      -200)
Norm        : 3.14551       (-0.325248     0.325248)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   69.86     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.18e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.358e-07   2.762e-08
25- 50  2.611e-07   1.418e-07
50-150  5.727e-07   3.148e-07
15-150  9.696e-07   4.023e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.27992        (-1.57066      2.15847)
R1^2/D10^2  : 1.26934        (-0.828316      2.66044)
kT2 [keV]   : 32.0244        (-7.89153      18.2099)
R2^2/D10^2  : 5.76762E-03    (-0.0042081   0.00887956)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   65.14     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.64e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.381e-07   6.915e-08
25- 50  2.324e-07   9.071e-08
50-150  7.009e-07   3.626e-07
15-150  1.071e-06   4.005e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.292 sec. to    0.708 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50681     ( -0.25477   0.258534 )
Norm@50keV  : 2.01453E-02    ( -0.00317887   0.00315567 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.96     using 59 bins.
 Reduced chi-squared = 0.841404
# Null hypothesis probability of 7.98e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.51962 ( -0.39594  0.3965 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.90924e-07 ( -3.24128e-08  3.26596e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.292 sec. to    0.708 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19560     ( -1.11673   0.552802 )
Epeak [keV] : 131.899      ( -131.899 -131.899 )
Norm@50keV  : 2.89601E-02    ( -0.0289601   0.0730205 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.65     using 59 bins.
 Reduced chi-squared = 0.850893
# Null hypothesis probability of 7.79e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.49858 ( -0.40289  0.4018 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.88005e-07 ( -3.39733e-08  3.38402e-08 ) ergs/cm2

Band function

Time interval is from   -0.292 sec. to    0.708 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]    : 15.5850  (-2.8709  3.59056)
R^2/D10^2   : 0.254324  (-0.132052   0.267093)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.19e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.284e-08   3.867e-09
25- 50  5.282e-08   1.336e-08
50-150  8.876e-08   2.840e-08
15-150  1.544e-07   3.650e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-88.9586      -199.363)
Norm        : 10.3793       (-1.59053     1.59095)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.79     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.03e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.585e-08   1.499e-08
25- 50  4.972e-08   2.801e-08
50-150  1.090e-07   5.980e-08
15-150  1.846e-07   1.044e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.97588        (-2.48198      4.05416)
R1^2/D10^2  : 4.38663        (-3.57379      34.4928)
kT2 [keV]   : 23.7535        (-6.49847      20.8446)
R2^2/D10^2  : 4.79171E-02    (-0.0425631   0.11076)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.39     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.57e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.552e-08   1.415e-08
25- 50  4.709e-08   2.557e-08
50-150  1.139e-07   6.700e-08
15-150  1.865e-07   8.782e-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: 1.41325     ( -0.186704   0.185768 )
Norm@50keV  : 6.23186E-03    ( -0.000645462   0.00064323 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.11     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.91e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 17.33 sec: 0.761239 ( -0.0815137  0.0818102 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04076e-06 ( -1.1778e-07  1.1844e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41208     ( -0.406301   1.2946 )
Epeak [keV] : 9999.32      ( -9999.36 -9999.36 )
Norm@50keV  : 6.25262E-03    ( -0.00625275   0.0033095 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.13     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.67e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 17.33 sec: 0.763069 ( -0.08399  0.079929 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.03452e-06 ( -1.12265e-07  1.25724e-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)  = 2.46e-07
S(50-100 keV) = 3.71e-07

T90 vs. Hardness ratio plot

T90                                   = 13.6160000562668 sec.
Hardness ratio (energy fluence ratio) = 1.50813

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.1352
Count Ratio (50-100 keV) / (15-25 keV) = 1.10171

Mask shadow pattern

IMX = 4.692482888128566E-01, IMY = -5.470022311397643E-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:
-239.560000 -5.976000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4859 -40.5616    4.8  52.3 -162.7   1.5077   2.4    2.0	Vela X-1                      
165.2079  37.3644    4.7  37.0  -23.9   0.7658   2.5 ------	UNKNOWN                       
162.5793  32.1826    2.8  32.4  -29.6   1.1541   4.2 ------	UNKNOWN                       
140.6376  43.5508    2.9  50.6  -44.6   4.0582   4.0 ------	UNKNOWN                       
123.1315 -25.1463    2.5  52.9 -139.3   5.4244   4.6 ------	UNKNOWN

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

Time interval of the image:
-5.976000 11.352000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5831 -40.5569   34.9  52.3 -162.7  -0.0420  -0.3    2.5	Vela X-1                      
204.2840  14.4757    0.8  35.8   49.4   1.5432  14.2 ------	UNKNOWN                       
166.9932 -46.2050    2.3  47.1  167.2   0.6484   5.0 ------	UNKNOWN                       
182.6464  35.0359    2.4  36.0    0.1   0.3179   4.8 ------	UNKNOWN                       
161.3248 -29.0210    2.3  31.1  179.8   0.2847   4.9 ------	UNKNOWN                       
133.2568  21.2531    2.2  42.0  -74.6   0.9500   5.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
73.740590 890.840600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4399  35.3219   51.1  49.4   21.6  -0.4750  -0.2    1.5	Her X-1                       
254.8792  30.0931    2.9  48.9   28.5   9.3534   4.0 ------	UNKNOWN                       
179.3968 -26.1972    3.2  47.3  176.8   5.6758   3.6 ------	UNKNOWN                       
197.2968  31.8101    2.9  18.4  -53.1   2.6305   4.0 ------	UNKNOWN                       
156.2117   5.9855    2.3  48.0 -129.1  13.9383   5.0 ------	UNKNOWN                       
157.6578  12.1746    2.7  45.3 -121.1  10.9511   4.3 ------	UNKNOWN

Plot creation:
Sat Jul 30 06:59:26 EDT 2022