Update CalSourceEnergyCalib table format to include ndf; add CalEnergyCalibInfo table

[zwl0331]

This pull request introduces a new calibration metadata table for per-SiPM energy calibration and updates the source calibration table to include additional statistical information. It also ensures these changes are integrated with the table factory for proper instantiation. The main themes are the addition of a new table and enhancements to an existing table.

New calibration metadata table:

• Added CalEnergyCalibInfo class in DbTables/inc/CalEnergyCalibInfo.hh to store combined ADC/MeV calibration constants, uncertainties, and status flags for each SiPM, including handling of different calibration status codes.
• Registered CalEnergyCalibInfo in the table factory by updating DbTables/src/DbTableFactory.cc to include the header and add creation logic for the new table. [1] [2]

Enhancements to source calibration table:

• Extended the CalSourceEnergyCalib::Row class in DbTables/inc/CalSourceEnergyCalib.hh to include a new ndf (number of degrees of freedom) field, and updated all relevant methods, CSV serialization, and constructor to handle this new field. [1] [2] [3] [4] [5]

[FNALbuild]

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• DbTables

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[rlcee]

Can you describe a bit more what purpose of CalEnergyCalibInfo? The "info" in the name implies it is an "adhoc" table, but it doesn't have the adhoc flag. (example of adhoc is CalCosmicEnergyCalibInfo) It is structured and seems to have the purpose of an archive table, like CalSourceEnergyCalib, and so if the intent is to record, channel by channel, the result of combining the calib sources, I'd expect it to be named more like CalCombinedEnergyCalib to keep in more in parallel with the other archive tables. Thanks

[giro94]

I second Ray's comments. You could call this CalCombinedEnergyCalib and will be essentially identical to the production CalEnergyCalib but with additional information for each row. And, being an archive table, no production maintenance on it. Then, you could think of creating a CalCombinedEnergyCalibInfo adhoc table storing the CIDs of the cosmics and source tables used for the combination (and maybe the CID of the production table?).

[oksuzian]

I'll review this pull request by first loading the PR details and its changes.Let me get the actual file changes in this PR.Now let me look at the existing similar table (CalCosmicEnergyCalibInfo) for comparison, and the original CalSourceEnergyCalib to understand the full context:Now I have a thorough understanding of the PR. Let me provide my review.

---

PR Review: #1718

This PR makes two changes: (1) adds an ndf field to CalSourceEnergyCalib, and (2) adds a new CalEnergyCalibInfo table. I found several issues ranging from a bug to style/design concerns.

---

🐛 Bug: Pre-existing rowToCsv bug fixed, but fix is incomplete

The original CalSourceEnergyCalib::rowToCsv on main was already buggy — it was missing the frFull, frFirst, and frSecond fields. It jumped from secescErrWidth directly to chisq:

    void rowToCsv(std::ostringstream& sstream, std::size_t irow) const override {
      Row const& r = _rows.at(irow);
      sstream << std::fixed << std::setprecision(5);
      sstream << r.roid()<<",";
      sstream << r.fullEPeak()<<",";
      ...
      sstream << r.secescErrWidth()<<",";
      sstream << r.chisq();  // <-- frFull, frFirst, frSecond are missing!
    }

This PR fixes that pre-existing bug by adding the missing fields. This is good, but it should be explicitly mentioned in the PR description as a bug fix, since it changes the CSV output format independently of the ndf addition. Consumers of this CSV data will see a format change.

---

⚠️ Issue 1: status_message with commas will break CSV parsing

In CalEnergyCalibInfo, the status_message field is a free-form std::string written directly to CSV without any quoting/escaping:

    sstream << r.status_code() << ",";
    sstream << r.status_message();

And in addRow, it's read as simply columns[4]:

    _rows.emplace_back(CaloSiPMId(index), std::stof(columns[1]),
                       std::stof(columns[2]), std::stoi(columns[3]),
                       columns[4]);

If status_message ever contains a comma, CSV parsing will break — the message will be split across multiple column indices. Since this is the last column it partially mitigates the issue (the base DbTable parser would need to handle it), but it's still fragile. Consider:

• Documenting that commas are forbidden in status_message, or
• Using a fixed enum/int instead of a free-form string, or
• Ensuring the DbTable CSV parser treats the last column as "rest of line"

---

⚠️ Issue 2: Narrowing conversion in addRow — std::stoul to std::uint16_t

    std::uint16_t index = std::stoul(columns[0]);

std::stoul returns unsigned long, which is silently narrowed to uint16_t. If the parsed value exceeds 65535, it will silently wrap. This is the same pattern used in the existing CalSourceEnergyCalib, so it's consistent with the codebase, but worth noting. The subsequent bounds check against CaloConst::_nChannelDB does provide a safety net.

---

⚠️ Issue 3: std::string status_message passed by value in constructor

    Row(CaloSiPMId roid, float ADC2MeV, float ADC2MeV_err,
        int status_code, std::string status_message)
        : _roid(roid),
          _ADC2MeV(ADC2MeV),
          _ADC2MeV_err(ADC2MeV_err),
          _status_code(status_code),
          _status_message(status_message) {}

The status_message parameter is taken by value but then copied into _status_message. It should either be taken by const std::string& (to avoid one extra copy) or moved via std::move(status_message) in the initializer list. For example:

_status_message(std::move(status_message)) {}

This also applies to the existing CalCosmicEnergyCalibInfo (same pattern), but for new code it's worth getting right.

---

💡 Issue 4: std::setprecision(5) applied to integer fields

In CalEnergyCalibInfo::rowToCsv:

    sstream << std::fixed << std::setprecision(5);
    sstream << r.roid() << ",";
    sstream << r.ADC2MeV() << ",";
    sstream << r.ADC2MeV_err() << ",";
    sstream << r.status_code() << ",";
    sstream << r.status_message();

std::fixed with setprecision(5) doesn't affect integer output, but it does affect roid() if CaloSiPMId's operator<< outputs a float-like value. This is consistent with the codebase pattern, so it's minor.

---

💡 Issue 5: Inconsistent coding style between the new file and existing codebase

The new CalEnergyCalibInfo.hh uses a different formatting style (indentation, brace placement, spacing) compared to the existing tables like CalSourceEnergyCalib.hh and CalCosmicEnergyCalibInfo.hh. For example:

• New file uses 2-space indent with braces on same line (formatted style)
• Existing files use mixed indentation with more compact formatting

This is a minor consistency point but worth aligning for maintainability.

---

💡 Issue 6: Missing #include <vector> in CalEnergyCalibInfo.hh

The new file includes <vector> explicitly, which is good. However, it does not include "Offline/DataProducts/inc/CaloConst.hh" — wait, it does include it. And it doesn't include <map> like CalSourceEnergyCalib.hh does (though <map> isn't actually used there either). This is fine.

---

Summary

Severity	Issue	Location
🐛 Bug (pre-existing, fixed here)	rowToCsv was missing frFull, frFirst, frSecond fields — this is a behavior change that should be documented	CalSourceEnergyCalib.hh
⚠️ Medium	status_message string in CSV can break parsing if it contains commas	CalEnergyCalibInfo.hh
⚠️ Low	std::string passed by value instead of by const-ref or moved	CalEnergyCalibInfo.hh Row constructor
💡 Nit	Inconsistent code style with existing tables	CalEnergyCalibInfo.hh

The most important item to address is Issue 1 (the status_message CSV safety concern). The pre-existing rowToCsv bug fix is a welcome improvement but should be called out in the PR description since it changes behavior beyond just adding ndf.

[FNALbuild]

📝 The HEAD of main has changed to 10120d9. Tests are now out of date.