Revamp correlator interface

[bhazelton]

These are the new tables we plan to add:

• array_signal_source: Array-wide information about the commanded signal source

  • time* (GPS second): time when the input source was changed
  • source (string): One of "antenna", "load", "noise", "digital_same_seed", "digital_different_seed"

• correlator_component_start_times: When correlator components started

  • component* (string): One of "feng_sync", "xeng_integration" (in this case it's calculated from the Mcount, "catcher"
  • time* (GPS second): start time for this component

• xeng_int_start: Integer Mcount for x engine to start integrating

  • time* (GPS second): time that the xeng int start happened in GPS seconds
  • Mcount: the integer Mcount for x engine to start integrating

• lst_grid_parameters: Parameters in the correlator that control the LST grid

  • time* (GPS second): time when the parameter was set
  • parameter* (string): One of "samples_per_mcount", "sample_clock_freq", "xeng_ntime", "catcher_ngrid"
  • value (float): in the above order: ~number of time samples going into FFT, Sample clock frequency in Hz, Integer number of Mcounts per GPU block (sets minimum GPU integration time), number of LST bins over the sky

• bda_config: Maps pairs of correlator inputs to BDA tiers

  • time* (GPS second): time when bda config was set
  • input1* (integer): first correlator input number
  • input2* (integer): second correlator input number
  • tier (integer): BDA tier (1, 2, 3 or 4)

• bda_tier: Number of xgpu fine integrations for each tier

  • time* (GPS second): time when bda config was set
  • tier* (integer): BDA tier (1, 2, 3 or 4)
  • integrations (integer): Number of xgpu fine integrations for this tier

These are the old tables we plan to remove:

• correlator_control_state
• correlator_control_command
• correlator_take_data_arguments
• correlator_config_command