CALBANDPASS Bandpass calibration results

Name

Format

Units

Measure

Comments

Columns

Key

CAL_DATA_ID

Int Calibration data identifier

CAL_REDUCTION_ID

Int Calibration reduction identifier

ANTENNA_ID

Int Antenna identifier

FEED_ID

Int Feed identifier

SPECTRAL_WINDOW_ID

Int Spectral window identifier

Data description

NUM_PHASE_POLY

Int Number Nphpolyof phase frequency polynomial coefficients

NUM_AMPLI_POLY

Int Number Nampolyof amplitude frequency polynomial coefficients

Data

START_VALID_TIME

Double s EPOCH Start time of result validity period

END_VALID_TIME

Double s EPOCH End time of result validity period

FREQ_LIMITS

Double(2) Hz Frequency limits of polynomial expansion

PHASE_CURVE

Float( Nphpoly, Nr) rad Phase response of subband

AMPLI_CURVE

Float( Nampoly, Nr) Amplitude response of subband

REF_ANTENNA_ID

Int Reference Antenna Identifier

Notes: This table contains the result of a simple bandpass determination by TelCal (as used internally to average subbands for optimal SNR)
CAL_DATA_ID
Calibration data identifier
CAL_REDUCTION_ID
Calibration reduction identifier
ANTENNA_ID
Antenna identifier
FEED_ID
Feed identifier, as indexed from an element in the FEED_LIST collection in the the CONFIG_DESCRIPTION table.
SPECTRAL_WINDOW_ID
Spectral window identifier. A value of -1 indicates the row is valid for all spectral windows.
NUM_PHASE_POLY
Number of coefficients in a phase polynomial expansion
NUM_AMPLI_POLY
Number of coefficients in an amplitude polynomial expansion
FREQ_LIMITS
The frequency limits for the polynomial expansions
START_VALID_TIME
Start time of result validity period
END_VALID_TIME
End time of result validity period
PHASE_CURVE
Phase polynomial expansion (Chebichev polynomial expansion on the frequency interval reduced to [-1,1]).
AMPLI_CURVE
Log(Amplitude) polynomial expansion (Chebichev polynomial expansion on the frequency interval reduced to [-1,1]).
REF_ANTENNA_ID
Reference antenna identifier (for antenna phases).