1. EOVSA Data and Database System Gordon Hurford and Jim McTiernan EOVSA Prototype Readiness Review 24-Sept-2012

2. EOVSA Prototype Software Primary goal –Software support for evaluating hardware performance Secondary goals –Support for occasional solar observing –Test bed for development of full-array software

3. Role of Digital Packaging Processor To filter, average, partially calibrate and convert raw correlator output into a Miriad-compatible format that is written to Interim Data Base Real time, irreversible processing 1 1

4. Monitor and Control Operator Data Packaging Processor DSPU Antennas, receivers, analog subsystems Interim Data Base Data selection, averaging, reformatting & calibration Burst identification Archive Databases ~6 GB/day Users Quick look & metadata products Map generation Tohban Map display Light curve, spectra generation NJIT GH/JM+ NJIT OVSA Expansion Software and Data Handling - Kickoff Meeting 23-Oct-10 OVSA-specific CASPER-based Miriad-based RHESSI-based Light curve, spectra display IDL Shell Browser Hi-Level Analysis

5. Elements of Prototype Software DPP software to generate Miriad format interim database Scripts for conversion of interim database to application databases and useful data products Scripts and modules for calibration analyses and data displays Selection, acquisition and integration of data processing hardware platforms

6. EOVSA Prototype – DPP Software Tasks Ingestion of correlator output Access of relevant parameters from state frame Suppression of RFI bands identified using predetermined subbands and spectral kurtosis – (Generation of and display tools for RFI database) Application of predetermined complex gains –Gains applied at science channel level –Assumes subband level gains applied in correlator –Does nominal correction for attenuator state –Does fine delay corrections (based on Tn, T(n+1)…. Transfer of RFI and calibration tables from ACC – method? Output as Interim Database in Miriad format Status: Mostly doneStill to be done

7. Scripts and modules Conversion of selected scans to calibration and utility data bases Analysis of calibration data base (Miriad scripts) –Phase and amplitude calibration –Closure phase calculation and display –Baseline calibration –Delay center calibration –Custom modules (NJIT) Basic data displays –Spectra for individual baselines and/or antennas –Light curves –Dynamic spectra ???? Support for frequency-synthesis 1-D mapping

8. Other items (or not) Basic display of non-engineering parameters Display Miriad header parameters Basic index to data Basic database management No IDL shell (initially) for prototype analysis No direct display of stateframe parameters

9. DPP Hardware Platform Unit with 4 quad core processors 2 for input handling 1 for communications with ACC 1 for handling state frame N for packet processing at the subband level 1 for spectral processing at the science band level 1 for formatting and output Single unit located at OVRO ?? –Assumes software development can be done with existing processors – No backup for unit failure –How to support remotely ?? Linux operating system – flavor? Next step - Identify and order