Description
This repository was created in order to generate a set of test images for Robbie. The images contain a population of persistent sources, variable sources, and transient sources.
Simulation settings
The parameters of the simulation can be set in settings.py.
The default parameters and a description are shown below:
seed = 20181126 # Seed for random number generator
nepochs = 25 # Total number of epochs to generate
nsrc = 1100 # Total number of sources to generate
nvar = 500 # Number of sources which are variable (flux varies between epochs)
ntrans = 100 # Number of sources which are transient (present in only a single epoch)
nnorm = 500 # Number of persistent sources (no change between epochs)
rarange = (173, 187) # The range of RA over which to simulate the sources (Degrees)
decrange = (-7, 7) # The range of Dec over which to simulate the sources (Degrees)
fluxrange = (5e-3, 1) # The min/max flux of sources in Jy
imagerms = 5e-3 # Individual epoch image rms in Jy
data_dir = "data" # The directory in which the simulated files will be stored
Data products
All the data will be stored in the data_dir as specified in settings.py.
The following files are created:
- Epoch??.fits
- Simulated image for this epoch
- Epoch??_nois.fits
- Source free image for this epcoch (just nosie)
- Epoch??_comp_simp.fits
- Catalogue of sources for this epoch
- Reference_comp_sim.fits
- The reference catalogue with ra/dec and mean flux for each source
- Reference_all.fits
- The reference catalogue with ra/dec for each source and the flux in each epoch.
- square.mim, square.reg
- MIMAS and DS9 format region files for the area of interest.
- Not used in the simulation, but may be useful for visulatisation
How2Run
- Modify
settings.pyor use the default - Run
./MakeEpochImages.sh - ?
- Profit
Credit
If you make use of Robbie or SIMRobbie as part of your work please cite Hancock et al. 2018, and link to this repository.