ska_pst.send.dataproduct_file_manager

Module class for managing DADA files.

class ska_pst.send.dataproduct_file_manager.DadaFileManager(folder: Path, logger: Optional[Logger] = None)[source]

Class that captures PST data files.

Parses attributes from a set of PST voltage recorder data and weights files and computes some of the derived quantities from the scales and weights, such as the inferred number of dropped/invalid packets.

property data_files: List[DadaFileReader]: Get list of DadaFileReader objects.

property weights_files: List[WeightsFileReader]: Get list of WeightsFileReader objects.

class ska_pst.send.dataproduct_file_manager.DadaFileReader(file: Path, logger: Optional[Logger] = None)[source]

Class that can be used to read a PSR DADA file.

property bw: str: Get the BW value from header.

property data_size: int: Get the size of the data.

property eb_id: str: Get the EB_ID value from the header.

property file_number: int: Get the FILE_NUMBER value from header.

property file_path: str: Get path of file in string.

property file_size: int: Get size of file in bytes.

property freq: str: Get the FREQ value from header.

property header: Dict[str, str]: Get header for file.

property intent: str: Build value using SOURCE from header.

property nbit: int: Get the number of bits the data is encoded in.

property nchan: int: Get the NCHAN value from header.

property notes: str: Get the NOTES value from header.

property npol: str: Get the NPOL value from header.

property obs_offset: int: Get the OBS_OFFSET value.

property observer: str: Get the OBSERVER value from header.

property resolution: int: Get the RESOLUTION value from header.

property scan_id: str: Get the SCAN_ID value from header.

property source: str: Get the SOURCE value from header.

property stt_crd1: str: Get the STT_CRD1 value from header.

property stt_crd2: str: Get the STT_CRD2 value from header.

property telescope: str: Get the TELESCOPE value from header.

property tsamp: str: Get the TSAMP value from header.

property udp_nsamp: int: Get the UDP_NSAMP value from header.

property utc_start: str: Get the UTC_START value from header.

class ska_pst.send.dataproduct_file_manager.WeightsFileReader(file: Path, logger: Optional[Logger] = None)[source]

Class used to read Weights PSRDADA generated by ska_pst_dsp_disk.

property nsamp_per_weight: int: Get the number of samples the weights are used for.

property packet_offset: int

Get the package offset for current file.

This converts the obs_offset a packet offset by dividing the value by the weights_packet_stride. This will assert that the obs_offset is a mulitple of weights_packet_stride

property packet_scales_size: int: Get the packet scales size.

property packet_weights_size: int: Get the packet weights size.