SUBSCAN_SUMMARY Subscan summary information.

Name

Format

Units

Measure

Comments

Columns

Key

EXECBLOCK_ID

Int ExecBlock identifier

SCAN_NUMBER

Int Scan number

SUBSCAN_NUMBER

Int Subscan number

Data description

NUM_INTEGRATION

Int Number of integrations Ninteg

Data

TIME

Double s EPOCH Time interval mid-point

INTERVAL

Double s Time interval

SUBSCAN_INTENT

String Intent for the subscan

OBS_MODE

String Observing mode

NUM_SUBINTEG

Int( Ninteg) Number of sub-integrations Nsubinteg

Flags

FLAG_ROW

Bool The row flag

Notes: This table stores summary information for each subscan (as defined in the ALMA glossary). It gives a mean to get some basic informations in the context of the project structure, The TIME,INTERVAL pair of attributes allows to know which part of the MAIN table is relevant for a given subscan. This table plays the role of associating a certain number of rows in the Main table, the nature of this association being reflected by the subscan intent.
EXECBLOCK_ID
Identifier pointing to one row in the EXECBLOCK_SUMMARY table.
SCAN_NUMBER
Scan number, as enumerated during the execution of the Executing Block. The pair EXECBLOCK_ID,SCAN_NUMBER used as a key corresponds to a single row in the SCAN_SUMMARY table.
NUM_INTEGRATION
Number of integrations for this subscan.
TIME
Time mid-point interval. The same reference used for the TIME column in the MAIN must be used.
INTERVAL
Time interval. This is the difference between the end and begin TIME of the subscan
SUBSCAN_NUMBER
Subscan number. The enumeration is relative to a SCAN as it was enumerated during the execution of the SchedulingBlock.
SUBSCAN_INTENT
Intent with the subscan. This item is present here to allow querying data by accessing efficiently the MAIN table.
OBS_MODE
Observing mode. This item is present here to allow querying data by accessing efficiently the MAIN table. This OBS_MODE is a duplicate of the OBS_MODE which is in the STATE table.
NUM_SUBINTEG
Number of sub-integrations for each integration.
FLAG_ROW
True if data in this row are invalid, else False. Does not imply flagging in the MAIN.