orca.transform.spectrum_v2

Improved dynamic spectrum helpers (version 2).

Enhanced dynamic spectrum extraction with: * Read-only measurement set access * Proper MS FLAG column handling * Support for bcal=None (no calibration) * 4x frequency averaging (192 → 48 channels)

Attributes

`logger`
`N_CHAN_OUT`
`REDIS_URL`
`REDIS_EXPIRE_S`
`REDIS_KEY_PREFIX`
`ROW_NUMS`

Functions

`dynspec_map_v2`(self, subband_no, scan_no, ms, *[, ...])	Produce incoherent-sum + selected-baseline spectra from a single MS.
`dynspec_reduce_v2`(→ None)	Assemble per-scan lists from dynspec_map_v2 into 768-freq FITS cubes.

Module Contents

orca.transform.spectrum_v2.logger[source]

orca.transform.spectrum_v2.N_CHAN_OUT = 48[source]

orca.transform.spectrum_v2.REDIS_URL[source]

orca.transform.spectrum_v2.REDIS_EXPIRE_S = 36000[source]

orca.transform.spectrum_v2.REDIS_KEY_PREFIX = 'spec-v2-'[source]

orca.transform.spectrum_v2.ROW_NUMS = [('LWA-128&LWA-160', 54282), ('LWA-048&LWA-051', 33335), ('LWA-018&LWA-237', 30360),...[source]

orca.transform.spectrum_v2.dynspec_map_v2(self, subband_no: int, scan_no: int, ms: str, *, bcal: str = None, use_ms_flags: bool = True)[source]

Produce incoherent-sum + selected-baseline spectra from a single MS.

Uses FLAG column to mask samples (→ NaN).
If bcal is None ⇒ unity gains.

orca.transform.spectrum_v2.dynspec_reduce_v2(spectra: Iterable[List[_SnapshotSpectrumV2]], start_ts: datetime.datetime, out_dir: str) → None[source]: Assemble per-scan lists from dynspec_map_v2 into 768-freq FITS cubes. Safe against missing Redis keys / malformed blobs.