GRB221009A calib and r0 to dl1 steps

This page explains the steps to obtain the required files to calibrate the GRB221009A data and produce the DL1 files under strong moon conditions I concerns the following data and dates:

• 2022-10-10: GRB Moon data
• 2022-10-12: GRB Moon data
• 2022-11-05: Crab Moon data

Cat-A calibration

The coefficients are produced in the official data tree, as lstanalyser. If you want to run it locally, create your own data tree, with a link to the drs4 time, ff systematics and drs4 baseline directories and a local calibration directory (where the calibration files will be automatically stored) and add the option -b "dase_dir_of_your_tree" to the command. Below are listed the commands used for the three days. Due to the not perfect HV FF of the HV setting, some cuts are a bit relaxed by adding specific parameters to the command line.

2022-10-10 and 2022-11-05:

For these dates we use run 10359 taken on 2022-11-05, with equal HV setting

• onsite_create_calibration_file -r 10359 --flatfield-heuristic -y "--FlasherFlatFieldCalculator.charge_median_cut_outliers=[-0.9, 3]" "--LSTCalibrationCalculator.npe_median_cut_outliers=[-6,6]"

2022-10-12:

• onsite_create_calibration_file -r 9620 --flatfield-heuristic -y "--FlasherFlatFieldCalculator.charge_median_cut_outliers=[-0.9, 3]" "--LSTCalibrationCalculator.npe_median_cut_outliers=[-6,6]"