TOTAL_POWER_MONITORING Total power data monitoring.

Name

Format

Units

Measure

Comments

Columns

Key

TIME

Double s EPOCH Integration mid-point

CONFIG_DESCRIPTION_ID

Int Config-description identifier

FIELD_ID

Int Field identifier

Non-key attributes

INTERVAL

Double s Time interval

EXECBLOCK_ID

Int ExecBlock identifier

(SCAN_NUMBER)

Int Scan number

(SUBSCAN_NUMBER)

Int Subscan number

(INTEG_NUMBER)

Int Integration number

STATE_ID

Int( Na) State identifier

(UVW)

Double(3, Na) m UVW coordinates

EXPOSURE

Double( Na) s Effective integration time

TIME_CENTROID

Double( Na) s EPOCH Time centroid

Data

FLOAT_DATA

Float( Na, Nc, Nf) Float data matrix (single dish)

Flag information

FLAG_ANT

Int( Na) Flags concerning antennas

FLAG_POL

Int( Na, Nc) Flags concerning antennas and polarization

FLAG_ROW

Bool The row flag

Notes: This table is dedicated to the raw data originating from the radiometers to monitor the amount of precipitable water vapor in the pointing direction of each antenna and from the astronomical receivers to monitor eg their stability. This table is very similar to the MAIN table except that the data are directly present. These data may not be synchronized with the correlated astronomical data.
TIME
Mid-point (not centroid) of data interval.
TIME_EXTRA_PREC
Extra time precision
CONFIG_DESCRIPTION_ID
Configuration descriptor identifier (> 0) providing a direct index into the CONFIG_DESCRIPTION sub-table row number. Note that two or more sub-arrays cannot refer to the same CONFIG_DESCRIPTION_ID identifier. Note also that in this CONFIG_DESCRIPTION table PROCESSOR_ID must be indexed for a processor of type RADIOMETER and that CORRELATION_MODE must have a value Ncm=1.
FIELD_ID
Field identifier (> 0)
INTERVAL
Data sampling interval. This is the nominal data interval, it does not include the effects of bad data or partial integration.
EXECBLOCK_ID
This provides access to a row number in the EXECBLOCK_SUMMARY table. This meta coordinate defines the data-base in term of an implicit collection of data blocks.
SCAN_NUMBER
SCAN (ref. ALMA glossary) number. Enumeration relative to the Executing Block. This item is not mandatory. It should be used if the data are synchronized with the data from the correlator.
SUBSCAN_NUMBER
SUBSCAN (ref. ALMA glossary) number. This item is not mandatory. It should be used if the data are synchronized with the data from the correlator.
INTEG_NUMBER
INTEGRATION (ref. ALMA glossary) number.This item is not mandatory. It should be used if the data are synchronized with the data from the correlator.
STATE_ID
State identifier (> 0).
UVW
Antenna-based uvw coordinates for the Na antennas. This is defined at the centroid time TIME_CENTROID .
EXPOSURE
Effective duration of an INTEGRATION (or a SUBINTEG_NUM in the STATE table is > 0).
TIME_CENTROID
Time stamp reflecting the average time the non-blanked data was integrated.
FLOAT_DATA
Total power data.
FLAG_ANT
Unsigned long int (4-bytes) vector. Each bit corresponds to a specified flagging condition ( e.g. 22 = pointing, 26 = shadowing, ...). When different from zero all data concerning the antenna is affected.
FLAG_POL
Unsigned long int (4-bytes) vector . When different from zero all data concerning the polarization and antenna is invalid.