Difference between revisions of "GRB220501A"

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|-
 
|-
 
|DL2 Production
 
|DL2 Production
−
|style="background-color:#FF0000" |To do
+
|style="background-color:#00BA00" |Done
 
|
 
|
 
|-
 
|-
 
|Low Level Check
 
|Low Level Check
−
|style="background-color:#FF0000" |To do
+
|style="background-color:#00BA00" |Done
 
|
 
|
 
|-
 
|-
 
|DL3 Production
 
|DL3 Production
−
|style="background-color:#FF0000" |To do
+
|style="background-color:#FF0000" |Not done
−
|
+
|No sig. detection
 
|-
 
|-
 
|High Level Analysis
 
|High Level Analysis
−
|style="background-color:#FF8000" |On going
+
|style="background-color:#FF0000" |Not done
−
|
+
|No sig. detection
 
|}
 
|}
  
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!Link
 
!Link
 
|-
 
|-
−
| -
+
|22.3 min
−
|
+
|BOOTES-1
−
|style="color:#0000FF" | Initial detection
+
|style="color:#FF0000" | No detection
−
|
+
|up to 17.5 mag
−
|
 
 
|
 
|
 +
|https://gcn.gsfc.nasa.gov/gcn3/31990.gcn3
 
|-
 
|-
 +
|8.8 to 38.9 min
 +
|GRANDMA/TJML
 +
|style="color:#FF0000" | No detection
 +
|r(AB) > 16.0 mag
 
|
 
|
−
|
+
|https://gcn.gsfc.nasa.gov/gcn3/31984.gcn3
−
|style="color:#FF0000" | UL
 
−
|
 
−
|
 
−
|
 
 
|-
 
|-
−
|
 
−
|
 
−
|style="color:#00BA00" | Detection
 
−
|
 
−
|
 
−
|
 
 
|}
 
|}
  
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* '''Triggered by''': Swift-BAT and Fermi GBM
 
* '''Triggered by''': Swift-BAT and Fermi GBM
 
* '''Alert coordinates''':  
 
* '''Alert coordinates''':  
−
** RA: (hh mm ss), Dec: (dd mm ss)
+
** RA: 05 42 18 (hh mm ss), Dec: +14 02 00 (dd mm ss)
 
** RA, Dec in deg (ICRS): 85.577, +14.033
 
** RA, Dec in deg (ICRS): 85.577, +14.033
 
* '''Alert arrival time''': 2022-05-01T19:51:54 (TYPE_INTEGRAL_WAKEUP)
 
* '''Alert arrival time''': 2022-05-01T19:51:54 (TYPE_INTEGRAL_WAKEUP)
Line 97: Line 91:
 
* '''Software versions''':  
 
* '''Software versions''':  
 
**lstchain v0.9.6
 
**lstchain v0.9.6
 +
**lstMCpipe v0.9.2
  
 
* '''Cuts and parameters used''':  
 
* '''Cuts and parameters used''':  
Line 105: Line 100:
 
* ''' DL1 files ''':
 
* ''' DL1 files ''':
  
−
Used DL1b files produced by LSTOSA (lstchain v0.9)
+
Used DL1a files produced by LSTOSA (lstchain v0.9)
  
 
  /fefs/aswg/data/real/DL1/20220311/v0.9/tailcut84/dl1_LST-1.Run0{8043-8044}.h5
 
  /fefs/aswg/data/real/DL1/20220311/v0.9/tailcut84/dl1_LST-1.Run0{8043-8044}.h5
 +
 +
Since the data taking is in twilight conditions, a tail cut 10 5 cleaning is applied using lstchain_dl1ab.py and standard configuration file from lstchain v0.9.4.
  
 
* ''' Random Forest ''':
 
* ''' Random Forest ''':
−
src-indep (point gamma, disp_norm)
+
src-indep (diffuse gamma, disp_norm) and tuned to run 8044.0000, PSF tuning, tail cut 10 5 and dynamic cleaning.
−
  /fefs/aswg/
+
  /fefs/aswg/workspace/arnau.aguasca/Analysis/results/MC/lstMCpipe/models/20200629_prod5_trans_80/zenith_40deg/south_pointing/20220504_v0.9.1_prod5_trans_80_tailcut105_dynclg_tNSBtoGRB220501A_PSF
 +
 
 +
parameters used to tune the MC files:
 +
 
 +
  "image_modifier": {
 +
    "increase_nsb": true,
 +
    "extra_noise_in_dim_pixels": 1.801,
 +
    "extra_bias_in_dim_pixels": 1.098,
 +
    "transition_charge": 8,
 +
    "extra_noise_in_bright_pixels": 4.557,
 +
    "increase_psf": true,
 +
    "smeared_light_fraction": 0.125
 +
  },
  
 
* '''DL2 MC data for IRF''':
 
* '''DL2 MC data for IRF''':
 +
Not done, no significant detection.
  
 
* '''Overall selected observation time''': 25 min  
 
* '''Overall selected observation time''': 25 min  
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* '''Position analyzed''': 85.577, +14.033 (deg)
 
* '''Position analyzed''': 85.577, +14.033 (deg)
  
−
* '''Analysis/data problems''':
+
* '''Analysis/data problems''': The 2D distribution of reco. position of the events forms two over-densities if the data is processed using an RF trained with point gammas. As a consequence, I obtained a significance of -20 for run 8043 and +20 for run 8044. This problem disappears if diffuse gammas are used.
  
 
=== Theta2 plot ===
 
=== Theta2 plot ===
  
 
* theta < 0.2
 
* theta < 0.2
 +
 +
{| align='center'
 +
| [[Image:GRB220501A-theta2plot.png|thumb|600px|center|alt=Theta2 plot for GRB220501A.|Theta2 plot for GRB220501A.]]
 +
|
 +
|}

Latest revision as of 15:07, 4 May 2022

Go back to Transient observation logbook.

Status[edit]

Step Status Comment
DL2 Production Done
Low Level Check Done
DL3 Production Not done No sig. detection
High Level Analysis Not done No sig. detection

Green color code : 00BA00

Red Color code : FF0000

Orange Color code : FF8000

Multi-wavelength Observations[edit]

Timeline
T0+ Instrument Outcome Outcome specific value (flux/UL/...) Comment Link
22.3 min BOOTES-1 No detection up to 17.5 mag https://gcn.gsfc.nasa.gov/gcn3/31990.gcn3
8.8 to 38.9 min GRANDMA/TJML No detection r(AB) > 16.0 mag https://gcn.gsfc.nasa.gov/gcn3/31984.gcn3


Alert Information[edit]

  • Name/type of the alert: Name
  • GCN notice:
  • Triggered by: Swift-BAT and Fermi GBM
  • Alert coordinates:
    • RA: 05 42 18 (hh mm ss), Dec: +14 02 00 (dd mm ss)
    • RA, Dec in deg (ICRS): 85.577, +14.033
  • Alert arrival time: 2022-05-01T19:51:54 (TYPE_INTEGRAL_WAKEUP)
  • Other relevant information: We observed Swift-BAT position because the position error was lower than Fermi GBM error.
    • Redshift (z):

LST Observations[edit]

  • Dates of data-taking: 2022-05-01
    • 2022-05-01
      • Zenith range (deg): 65 -> 70
      • Transmission9km: n/a
      • Observation condition: twilight
      • Observation mode: std wobbles (W1 and W2)
      • Runs: 8043 - 8044
      • Joint observations with MAGIC? : No
      • ELOG link: Logbook URL
      • Important comments:

Analysis[edit]

Analysis configuration[edit]

  • Analyzer: Arnau Aguasca-Cabot (Barcelona Univ., email: arnau.aguasca@fqa.ub.edu)
  • Software versions:
    • lstchain v0.9.6
    • lstMCpipe v0.9.2
  • Cuts and parameters used:
    • intensity > 50
    • gammaness > 0.7
    • leakage < 0.2
  • DL1 files :

Used DL1a files produced by LSTOSA (lstchain v0.9) 

/fefs/aswg/data/real/DL1/20220311/v0.9/tailcut84/dl1_LST-1.Run0{8043-8044}.h5

Since the data taking is in twilight conditions, a tail cut 10 5 cleaning is applied using lstchain_dl1ab.py and standard configuration file from lstchain v0.9.4.

  • Random Forest :

src-indep (diffuse gamma, disp_norm) and tuned to run 8044.0000, PSF tuning, tail cut 10 5 and dynamic cleaning. 

/fefs/aswg/workspace/arnau.aguasca/Analysis/results/MC/lstMCpipe/models/20200629_prod5_trans_80/zenith_40deg/south_pointing/20220504_v0.9.1_prod5_trans_80_tailcut105_dynclg_tNSBtoGRB220501A_PSF

parameters used to tune the MC files: 

 "image_modifier": {
   "increase_nsb": true,
   "extra_noise_in_dim_pixels": 1.801,
   "extra_bias_in_dim_pixels": 1.098,
   "transition_charge": 8,
   "extra_noise_in_bright_pixels": 4.557,
   "increase_psf": true,
   "smeared_light_fraction": 0.125
 },
  • DL2 MC data for IRF:

Not done, no significant detection.

  • Overall selected observation time: 25 min
  • Position analyzed: 85.577, +14.033 (deg)
  • Analysis/data problems: The 2D distribution of reco. position of the events forms two over-densities if the data is processed using an RF trained with point gammas. As a consequence, I obtained a significance of -20 for run 8043 and +20 for run 8044. This problem disappears if diffuse gammas are used.

Theta2 plot[edit]

  • theta < 0.2
Theta2 plot for GRB220501A.
Theta2 plot for GRB220501A.
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