Roentgen - Aditya-L1 solar flare nowcasters (Team Navya, ISRO BAH 2026 PS-15)
Dual independent temporal convolutional networks (TCNs) that nowcast solar flares from India's Aditya-L1 X-ray telemetry:
| File | Channel | Input | Heads |
|---|---|---|---|
nowcast_soft.pt |
SoLEXS soft X-ray (2-22 keV) | 6 causal features from the 1-min count rate | detect (binary) + class (quiet/A/B/C/M/X) |
nowcast_hard.pt |
HEL1OS hard X-ray (8-150 keV) | 6 causal features | detect + burst tier (quiet/H1/H2/H3) |
nowcast_hard_calibrator.joblib |
- | isotonic calibrator for the hard detect prob | - |
navya-v2/*.pt |
next-generation retrain | 16 (soft) / 25 (hard) band-resolved physics features | detect + 6-class |
- Strictly causal (trailing windows only), seq_len 120 min,
150k params each, CPU real-time (40 ms per inference). - The two channels share nothing upstream; fusion happens at the serving layer only (union alert).
- Validated against the independent GOES catalogue (never a model input).
Serving code, feature pipeline, dashboard and docs:
https://github.com/Aur1ety/Roentgen (branch minimal for the deployable snapshot).
MODELS.md in this repo carries the full provenance/receipts summary.
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