Data quality flags in SCADA systems - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the data quality flag to 'GOOD' when the sensor reading is valid.

SCADA systems

if sensor_reading_valid:
    data_quality_flag = '[1]'

Drag options to blanks, or click blank then click option'

AGOOD

BUNKNOWN

CERROR

DBAD

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'BAD' or 'ERROR' flags for valid data.

The flag 'GOOD' indicates the sensor reading is valid and reliable.

2fill in blank

medium

Complete the code to mark the data quality flag as 'BAD' if the sensor reading is out of range.

SCADA systems

if sensor_reading < min_value or sensor_reading > max_value:
    data_quality_flag = '[1]'

Drag options to blanks, or click blank then click option'

AGOOD

BVALID

CUNKNOWN

DBAD

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'GOOD' flag for out of range data.

The 'BAD' flag is used when data is outside expected limits, indicating poor quality.

3fill in blank

hard

Fix the error in the code to correctly assign the 'UNKNOWN' flag when sensor status is unclear.

SCADA systems

if sensor_status == 'uncertain':
    data_quality_flag = '[1]'

Drag options to blanks, or click blank then click option'

AUNKNOWN

BBAD

CGOOD

DERROR

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning 'GOOD' or 'BAD' flags when status is uncertain.

The 'UNKNOWN' flag is used when the sensor status cannot be determined clearly.

4fill in blank

hard

Fill both blanks to set the flag to 'ERROR' if sensor reading is None and log the issue.

SCADA systems

if sensor_reading is [1]:
    data_quality_flag = '[2]'
    log_issue('Sensor reading missing')

Drag options to blanks, or click blank then click option'

ANone

BGOOD

CERROR

DBAD

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'BAD' or 'GOOD' flags for missing data.

When the reading is None, it means missing data, so the flag should be 'ERROR'.

5fill in blank

hard

Fill all three blanks to create a dictionary mapping sensor IDs to their data quality flags, including only sensors with 'GOOD' or 'UNKNOWN' flags.

SCADA systems

quality_map = {sensor_id: data_quality_flags[sensor_id] for sensor_id in sensor_ids if data_quality_flags[sensor_id] [1] ['GOOD', 'UNKNOWN'] and sensor_id [2] None and data_quality_flags[sensor_id] [3] 'BAD'}

Drag options to blanks, or click blank then click option'

Ain

Bis not

C!=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' instead of 'in' for list membership.

Using '==' instead of '!=' to exclude flags.

The 'in' operator checks if the flag is in the list. 'is not' checks sensor_id is not None. '!=' excludes 'BAD' flags.