FlagRFIAnalyzer¶

class dias.analyzers.FlagRFIAnalyzer(name, write_dir, state_dir)¶

Bases: dias.chime_analyzer.CHIMEAnalyzer

Identifies data contaminated by RFI.

Wrapper for ch_util.rfi.number_deviations. Flags data as RFI if the stacked autocorrelations are greater than some number of local median absolute deviations (MAD) from the local median.

DocLib 777 describes this analyzer and the associated theremin graph.

Attributes:	apply_static_mask archive_data_dir data_size_max freq_high freq_low freq_width instrument log_level max_num_file offset output_suffix period rolling separate_cyl_pol start_time state_size_max threshold_mad time_width

Methods

`Finder`(self[, acqs])	Get a ch_util Finder object.
`add_data_metric`(self, name[, description, …])	Add a gauge metric.
`add_task_metric`(self, metric_name[, …])	Add a gauge metric.
`delete_callback`(self, deleted_files)	Tell the analyzer that files have been deleted after the task has run.
`finish`(self)	Close connection to data index database.
`from_config`(config, \args, \\*kwargs)	Create a new instance with values loaded from config.
`init_logger`(self[, log_level_override])	Set up the logger.
`read_config`(self, config[, compare_keys, …])	Set all properties in this class from the supplied config.
`refresh_data_index`(self)	Remove expired rows from the data index database.
`run`(self)	Run the task.
`setup`(self)	Initialize data index database and Prometheus metrics.
`update_data_index`(self, start, stop[, filename])	Add row to data index database.

Construct the CHIME analyzer base class.

Parameters:	name (String) – The name of the task. write_dir (String) – The path to write output data to. state_dir (String) – The path to write state data to.
Attributes:	apply_static_mask archive_data_dir data_size_max freq_high freq_low freq_width instrument log_level max_num_file offset output_suffix period rolling separate_cyl_pol start_time state_size_max threshold_mad time_width

Methods

`Finder`(self[, acqs])	Get a ch_util Finder object.
`add_data_metric`(self, name[, description, …])	Add a gauge metric.
`add_task_metric`(self, metric_name[, …])	Add a gauge metric.
`delete_callback`(self, deleted_files)	Tell the analyzer that files have been deleted after the task has run.
`finish`(self)	Close connection to data index database.
`from_config`(config, \args, \\*kwargs)	Create a new instance with values loaded from config.
`init_logger`(self[, log_level_override])	Set up the logger.
`read_config`(self, config[, compare_keys, …])	Set all properties in this class from the supplied config.
`refresh_data_index`(self)	Remove expired rows from the data index database.
`run`(self)	Run the task.
`setup`(self)	Initialize data index database and Prometheus metrics.
`update_data_index`(self, start, stop[, filename])	Add row to data index database.

Attributes Summary

`apply_static_mask`
`freq_high`
`freq_low`
`freq_width`
`instrument`
`max_num_file`
`offset`
`output_suffix`
`rolling`
`separate_cyl_pol`
`threshold_mad`
`time_width`

Methods Summary

`finish`(self)	Close connection to data index database.
`refresh_data_index`(self)	Remove expired rows from the data index database.
`run`(self)	Run the task.
`setup`(self)	Initialize data index database and Prometheus metrics.
`update_data_index`(self, start, stop[, filename])	Add row to data index database.

Attributes Documentation

apply_static_mask = None¶

freq_high = None¶

freq_low = None¶

freq_width = None¶

instrument = None¶

max_num_file = None¶

offset = None¶

output_suffix = None¶

rolling = None¶

separate_cyl_pol = None¶

threshold_mad = None¶

time_width = None¶

Methods Documentation

finish(self)¶: Close connection to data index database.

refresh_data_index(self)¶

Remove expired rows from the data index database.

Remove any rows of the data index database that correspond to files that have been cleaned (removed) by dias manager.

run(self)¶

Run the task.

Load stacked autocorrelations from the last period, generate rfi mask, write to disk, and update the data index database.

setup(self)¶: Initialize data index database and Prometheus metrics.

update_data_index(self, start, stop, filename=None)¶

Add row to data index database.

Update the data index database with a row that contains the name of the file and the span of time the file contains.

Parameters:	start (unix time) – Earliest time contained in the file. stop (unix time) – Latest time contained in the file. filename (str) – Name of the file.