From: Interrupted time series analysis using autoregressive integrated moving average (ARIMA) models: a guide for evaluating large-scale health interventions
Model type
Characteristics of ACF and PACF
ACF
PACF
ARIMA(p,d,0)
Tails off or is sinusoidal
Cuts off lag p
ARIMA(0,d,q)
Cuts off lag q
ARMA(p,d,q)