1. A human must make an event diretory and event_metadata.csv file. See events/GW190519/ for an example.

2. A human must provide an exptable.txt file in the event directory. See events/GW190519/ for an example.

3. Run generate_sims.py. Use the event name as a command line argument. Example: python generate_sims.py GW190510.

The script generate_sims.py will do the following things:

• Trigger makeSimlib_easyaccess.py with the coordinates and exposure numbers corresponding to the event

• makeSimlib_easyaccess.py will then produce a SIMLIB file for the observations. This file will tell SNANA the observing conditions of the data.

• Clean the SIMLIB file of duplicate rows by running clean_simlib.py

• Create a sims directory inside the event directory with template SNANA input files for KNe, SNe, and AGN.

• Call update_snana_inputs.py to overwrite the templates with position, date, and name information of the current event.

• Run SNANA on the updated input files. Simulations will be tagged with the user's FNAL login name.

• Collect the simulations and move them to the sims/ diretory for the current event.