yaml file for simulation: parameter definition The input yaml file contains all the settings to run the simulation. It is composed of a dictionnary with key/values given below.
Supernovae parameters (key: SN parameters)
keya
keyb
value
definition
Id
100
Id of the first SN
x1_color
stretch and color distribution
rate
JLA
dirFile
'reference_files'
location dir of the files
x1
SN x1
type
unique
parameter choice: unique/random/uniform
min
0.0
min x1 value
max
2.0
max x1 value
step
0.1
x1 step value
color
SN color
type
unique
parameter choice: unique/random/uniform
min
0.0
min color value
max
2.0
max color value
step
0.1
color step value
z
SN redshift
type
unique
parameter choice: unique/random/uniform
min
0.0
min z value
max
2.0
max z value
step
0.1
z step value
rate
Perrett
Type Ia volumetric rate : Perrett, Ripoche, Dilday
daymax
max lumi day
type
unique
parameter choice: unique/random/uniform
step
1.
daymax step value [day]
min_rf_phase
-20.
obs min phase (rest frame)
max_rf_phase
60.
obs max phase (rest frame)
min_rf_phase_qual
-15.
obs min phase (rest frame) (qual cuts)
max_rf_phase_qual
45.
obs max phase (rest frame) (qual cuts)
absmag
-19.0906
peak abs mag
band
bessellB
band for absmag
magsys
vega
magsys for absmag
differential_flux
0
to estimate differential flux (0/1)
salt2Dir
SALT2_Files
dir where SALT2 files are located
blue_cutoff
380.
blue cutoff value [nm]
red_cutoff
800.
red cutoff value [nm]
ebvofMW
-1.0
E(B-V) for dust: if -1.0: taken from a dust map
NSN factor
1
scale factor for production
Cosmology (key: Cosmology)
key
value
definition
Model
w0waCDM
Cosmological model
Omega_m
0.30
Omega_m
Omega_l
0.70
Omega_l
H0
72.0
H0
w0
-1.0
w0
wa
0.0
wa
Telescope (key: Instrument)
key
value
definition
name
LSST
name of the telescope (internal)
throughput_dir
LSST_THROUGHPUTS_BASELINE
dir of throughput
atmos_dir
THROUGHPUTS_DIR
dir of atmos
airmass
1.2
airmass value
atmos
True
atmos
aerosol
False
aerosol
Observations (key: Observations)
key
value
definition
filename
/sps/lsst/cadence/LSST_SN_PhG/cadence_db/opsim_db/kraken_2026.db
Name of db obs file (full path)
fieldtype
WFD
field type (DD or WFD)
coadd
1
coaddition per night (0=no/1=yes)
season
[3,4]
season to simulate (-1 = all seasons)
Simulator (key: Simulator)
keya
keyb
value
definition
name
sn_simulator.sn_cosmo
Simulator name: sn_cosmo,sn_fast
model
salt2-extended
spectra model
version
1.0
version
Template Dir
Template_LC
loc. dir of LC templates (sn_fast)
Gamma Dir
reference_files
loc. dir of gamma files
Gamma File
gamma.hdf5
gamma file name
DustCorr Dir
Template_Dust
loc. dir of dust templates (sn_fast)
Host Parameters
None
Host parameters
Display_LC
display during LC simulations
display
False
display (True) or not (False)
time
1
display during time (sec) before closing
keya
keyb
value
definition
ProductionID
prodid
production Id
Output
Output infos
directory
outputDir
output directory (full path)
save
True
to copy data on disk (True) or not (False)
Multiprocessing
multiprocessing infos
nproc
3
number of proc chosen
Pixelisation
sky pixelisation
nside
64
healpix nside value
Web path
https://me.lsst.eu/gris/DESC_SN_pipeline url where files needed to perform simulations are located