#include <MonitorTrackResiduals.h>

Inheritance diagram for MonitorTrackResidualsBase< pixel_or_strip >:

Classes
struct	HistoPair

struct	HistoXY

Public Member Functions
void	analyze (const edm::Event &, const edm::EventSetup &) override

void	bookHistograms (DQMStore::IBooker &, edm::Run const &, edm::EventSetup const &) override

void	dqmBeginRun (const edm::Run &, const edm::EventSetup &) override

	MonitorTrackResidualsBase (const edm::ParameterSet &)

	~MonitorTrackResidualsBase () override

Public Member Functions inherited from DQMEDAnalyzer
void	accumulate (edm::Event const &event, edm::EventSetup const &setup) final

virtual void	analyze (edm::Event const &, edm::EventSetup const &)

void	beginLuminosityBlock (edm::LuminosityBlock const &lumi, edm::EventSetup const &setup) final

void	beginRun (edm::Run const &run, edm::EventSetup const &setup) final

virtual void	dqmBeginLuminosityBlock (edm::LuminosityBlock const &, edm::EventSetup const &)

virtual void	dqmBeginRun (edm::Run const &, edm::EventSetup const &)

	DQMEDAnalyzer ()

virtual void	dqmEndLuminosityBlock (edm::LuminosityBlock const &, edm::EventSetup const &)

virtual void	dqmEndRun (edm::Run const &, edm::EventSetup const &)

void	endLuminosityBlock (edm::LuminosityBlock const &, edm::EventSetup const &) final

void	endLuminosityBlockProduce (edm::LuminosityBlock &lumi, edm::EventSetup const &setup) final

void	endRun (edm::Run const &, edm::EventSetup const &) final

void	endRunProduce (edm::Run &run, edm::EventSetup const &setup) final

virtual bool	getCanSaveByLumi ()

Public Member Functions inherited from edm::one::EDProducer< edm::EndRunProducer, edm::one::WatchRuns, edm::EndLuminosityBlockProducer, edm::one::WatchLuminosityBlocks, edm::Accumulator >
	EDProducer ()=default

SerialTaskQueue *	globalLuminosityBlocksQueue () final

SerialTaskQueue *	globalRunsQueue () final

bool	hasAbilityToProduceInBeginLumis () const final

bool	hasAbilityToProduceInBeginRuns () const final

bool	hasAbilityToProduceInEndLumis () const final

bool	hasAbilityToProduceInEndRuns () const final

bool	wantsGlobalLuminosityBlocks () const final

bool	wantsGlobalRuns () const final

Public Member Functions inherited from edm::one::EDProducerBase
	EDProducerBase ()

ModuleDescription const &	moduleDescription () const

bool	wantsStreamLuminosityBlocks () const

bool	wantsStreamRuns () const

	~EDProducerBase () override

Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

std::vector< edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const

	ProducerBase ()

std::vector< edm::ProductResolverIndex > const &	putTokenIndexToProductResolverIndex () const

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...

void	resolvePutIndicies (BranchType iBranchType, ModuleToResolverIndicies const &iIndicies, std::string const &moduleLabel)

	~ProducerBase () noexcept(false) override

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

void	convertCurrentProcessAlias (std::string const &processName)
	Convert "@currentProcess" in InputTag process names to the actual current process name. More...

	EDConsumerBase ()

	EDConsumerBase (EDConsumerBase const &)=delete

	EDConsumerBase (EDConsumerBase &&)=default

ESProxyIndex const *	esGetTokenIndices (edm::Transition iTrans) const

ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

std::vector< ProductResolverIndexAndSkipBit > const &	itemsToGetFrom (BranchType iType) const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const

EDConsumerBase const &	operator= (EDConsumerBase const &)=delete

EDConsumerBase &	operator= (EDConsumerBase &&)=default

bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

ProductResolverIndexAndSkipBit	uncheckedIndexFrom (EDGetToken) const

void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)

void	updateLookup (eventsetup::ESRecordsToProxyIndices const &)

virtual	~EDConsumerBase () noexcept(false)

Private Types
typedef std::map< std::pair< std::string, int32_t >, HistoXY >	HistoSet

Private Member Functions
void	createMEs (DQMStore::IBooker &, const edm::EventSetup &)

std::pair< std::string, int32_t >	findSubdetAndLayer (uint32_t ModuleID, const TrackerTopology *tTopo)

Private Attributes
TrackerValidationVariables	avalidator_

edm::ParameterSet	conf_

GenericTriggerEventFlag *	genTriggerEventFlag_

unsigned long long	m_cacheID_

HistoSet	m_ModuleResiduals

HistoSet	m_SubdetLayerResiduals

bool	ModOn

edm::EDGetTokenT< reco::VertexCollection >	offlinePrimaryVerticesToken_

edm::ParameterSet	Parameters

std::unique_ptr< TkHistoMap >	tkhisto_ResidualsMean

Additional Inherited Members
Public Types inherited from DQMEDAnalyzer
typedef dqm::reco::DQMStore	DQMStore

typedef dqm::reco::MonitorElement	MonitorElement

Public Types inherited from edm::one::EDProducerBase
typedef EDProducerBase	ModuleType

Public Types inherited from edm::ProducerBase
using	ModuleToResolverIndicies = std::unordered_multimap< std::string, std::tuple< edm::TypeID const , const char , edm::ProductResolverIndex >>

typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

Static Public Member Functions inherited from edm::one::EDProducerBase
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::ProducerBase
ProducesCollector	producesCollector ()

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes ()

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag const &tag)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Protected Attributes inherited from DQMEDAnalyzer
edm::EDPutTokenT< DQMToken >	lumiToken_

edm::EDPutTokenT< DQMToken >	runToken_

Detailed Description

template<TrackerType pixel_or_strip>
class MonitorTrackResidualsBase< pixel_or_strip >

Definition at line 38 of file MonitorTrackResiduals.h.

Member Typedef Documentation

template<TrackerType pixel_or_strip>

typedef std::map<std::pair<std::string, int32_t>, HistoXY> MonitorTrackResidualsBase< pixel_or_strip >::HistoSet

private

Definition at line 64 of file MonitorTrackResiduals.h.

Constructor & Destructor Documentation

template<TrackerType pixel_or_strip>

MonitorTrackResidualsBase< pixel_or_strip >::MonitorTrackResidualsBase ( const edm::ParameterSet & iConfig )

explicit

Definition at line 19 of file MonitorTrackResiduals.cc.

References MonitorTrackResidualsBase< pixel_or_strip >::conf_, edm::ParameterSet::getParameter(), MonitorTrackResidualsBase< pixel_or_strip >::ModOn, MonitorTrackResidualsBase< pixel_or_strip >::offlinePrimaryVerticesToken_, and AlCaHLTBitMon_QueryRunRegistry::string.

     : conf_(iConfig),
       m_cacheID_(0),
       genTriggerEventFlag_(new GenericTriggerEventFlag(
           iConfig.getParameter<edm::ParameterSet>("genericTriggerEventPSet"), consumesCollector(), *this)),
       avalidator_(iConfig, consumesCollector()) {
   ModOn = conf_.getParameter<bool>("Mod_On");
   offlinePrimaryVerticesToken_ = consumes<reco::VertexCollection>(std::string("offlinePrimaryVertices"));
 }

template<TrackerType pixel_or_strip>

MonitorTrackResidualsBase< pixel_or_strip >::~MonitorTrackResidualsBase ( )

override

Definition at line 30 of file MonitorTrackResiduals.cc.

References MonitorTrackResidualsBase< pixel_or_strip >::genTriggerEventFlag_.

                                                                       {
   if (genTriggerEventFlag_)
     delete genTriggerEventFlag_;
 }

Member Function Documentation

template<TrackerType pixel_or_strip>

void MonitorTrackResidualsBase< pixel_or_strip >::analyze	(	const edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

override

Definition at line 236 of file MonitorTrackResiduals.cc.

                                                                                                            {
   auto vtracks = std::vector<TrackerValidationVariables::AVTrackStruct>();
   // Filter out events if Trigger Filtering is requested
   if (genTriggerEventFlag_->on() && !genTriggerEventFlag_->accept(iEvent, iSetup))
     return;
 
   edm::Handle<reco::VertexCollection> vertices;
   iEvent.getByToken(offlinePrimaryVerticesToken_, vertices);
   if (!vertices.isValid() || vertices->empty())
     return;
   const auto primaryVertex = vertices->at(0);
 
   // Retrieve tracker topology from geometry
   edm::ESHandle<TrackerTopology> tTopoHandle;
   iSetup.get<TrackerTopologyRcd>().get(tTopoHandle);
   const TrackerTopology *const tTopo = tTopoHandle.product();
 
   avalidator_.fillTrackQuantities(iEvent,
                                   iSetup,
                                   // tell the validator to only look at good tracks
                                   [&](const reco::Track &track) -> bool {
                                     return track.pt() > 0.75 &&
                                            abs(track.dxy(primaryVertex.position())) < 5 * track.dxyError();
                                   },
                                   vtracks);
 
   for (auto &track : vtracks) {
     for (auto &it : track.hits) {
       uint RawId = it.rawDetId;
 
       auto id = DetId(RawId);
       auto isPixel = id.subdetId() == 1 || id.subdetId() == 2;
       if (isPixel != (pixel_or_strip == TRACKERTYPE_PIXEL))
         continue;
 
       if (ModOn) {
         auto &mod_histos = m_ModuleResiduals[std::make_pair("", RawId)];
         mod_histos.x.base->Fill(it.resXprime);
         mod_histos.x.normed->Fill(it.resXprime / it.resXprimeErr);
         mod_histos.y.base->Fill(it.resYprime);
         mod_histos.y.normed->Fill(it.resYprime / it.resYprimeErr);
       }
 
       auto subdetandlayer = findSubdetAndLayer(RawId, tTopo);
       auto histos = m_SubdetLayerResiduals[subdetandlayer];
       // fill if its error is not zero
       if (it.resXprimeErr != 0 && histos.x.base) {
         histos.x.base->Fill(it.resXprime);
         histos.x.normed->Fill(it.resXprime / it.resXprimeErr);
         if (!isPixel)
           tkhisto_ResidualsMean->fill(RawId, it.resXprime);
       }
       if (it.resYprimeErr != 0 && histos.y.base) {
         histos.y.base->Fill(it.resYprime);
         histos.y.normed->Fill(it.resYprime / it.resYprimeErr);
       }
     }
   }
 }

template<TrackerType pixel_or_strip>

void MonitorTrackResidualsBase< pixel_or_strip >::bookHistograms	(	DQMStore::IBooker &	,
		edm::Run const &	,
		edm::EventSetup const &
	)

overridevirtual

Implements DQMEDAnalyzer.

Definition at line 36 of file MonitorTrackResiduals.cc.

References MonitorTrackResidualsBase< pixel_or_strip >::createMEs(), edm::EventSetup::get(), MonitorTrackResidualsBase< pixel_or_strip >::m_cacheID_, edm::ESHandle< T >::product(), SiStripFolderOrganizer::setSiStripFolderName(), AlCaHLTBitMon_QueryRunRegistry::string, and MonitorTrackResidualsBase< pixel_or_strip >::tkhisto_ResidualsMean.

                                                                                             {
   unsigned long long cacheID = iSetup.get<TrackerDigiGeometryRecord>().cacheIdentifier();
   if (m_cacheID_ != cacheID) {
     m_cacheID_ = cacheID;
     this->createMEs(ibooker, iSetup);
   }
   std::string topFolderName_ = "SiStrip";
   SiStripFolderOrganizer folder_organizer;
   folder_organizer.setSiStripFolderName(topFolderName_);
   edm::ESHandle<TkDetMap> tkDetMapHandle;
   iSetup.get<TrackerTopologyRcd>().get(tkDetMapHandle);
   tkhisto_ResidualsMean = std::make_unique<TkHistoMap>(
       tkDetMapHandle.product(), ibooker, topFolderName_, "TkHMap_ResidualsMean", 0.0, true);
 }

template<TrackerType pixel_or_strip>

void MonitorTrackResidualsBase< pixel_or_strip >::createMEs	(	DQMStore::IBooker &	ibooker,
		const edm::EventSetup &	iSetup
	)

private

Definition at line 102 of file MonitorTrackResiduals.cc.

References funct::abs(), dqm::dqmstoreimpl::DQMStore::IBooker::book1D(), MonitorTrackResidualsBase< pixel_or_strip >::conf_, TrackerGeometry::detIds(), MonitorTrackResidualsBase< pixel_or_strip >::findSubdetAndLayer(), edm::EventSetup::get(), edm::ParameterSet::getParameter(), combine::histos, photons_cff::ids, PixelPluginsPhase0_cfi::isBarrel, fastTrackerRecHitType::isPixel(), MonitorTrackResidualsBase< pixel_or_strip >::m_ModuleResiduals, MonitorTrackResidualsBase< pixel_or_strip >::m_SubdetLayerResiduals, MonitorTrackResidualsBase< pixel_or_strip >::ModOn, edm::ESHandle< T >::product(), dqm::impl::MonitorElement::setAxisTitle(), dqm::dqmstoreimpl::DQMStore::IBooker::setCurrentFolder(), SiStripFolderOrganizer::setDetectorFolder(), SiStripFolderOrganizer::setLayerFolder(), AlCaHLTBitMon_QueryRunRegistry::string, TRACKERTYPE_PIXEL, and geometryCSVtoXML::xy.

Referenced by MonitorTrackResidualsBase< pixel_or_strip >::bookHistograms().

                                                                                                                {
   // Retrieve tracker topology and geometry
   edm::ESHandle<TrackerTopology> tTopoHandle;
   iSetup.get<TrackerTopologyRcd>().get(tTopoHandle);
   const TrackerTopology *const tTopo = tTopoHandle.product();
 
   edm::ESHandle<TrackerGeometry> TG;
   iSetup.get<TrackerDigiGeometryRecord>().get(TG);
 
   Parameters = conf_.getParameter<edm::ParameterSet>("TH1ResModules");
   int32_t i_residuals_Nbins = Parameters.getParameter<int32_t>("Nbinx");
   double d_residual_xmin = Parameters.getParameter<double>("xmin");
   double d_residual_xmax = Parameters.getParameter<double>("xmax");
   Parameters = conf_.getParameter<edm::ParameterSet>("TH1NormResModules");
   int32_t i_normres_Nbins = Parameters.getParameter<int32_t>("Nbinx");
   double d_normres_xmin = Parameters.getParameter<double>("xmin");
   double d_normres_xmax = Parameters.getParameter<double>("xmax");
 
   // use SistripHistoId for producing histogram id (and title)
   SiStripHistoId hidmanager;
 
   SiStripFolderOrganizer strip_organizer;
   auto pixel_organizer = SiPixelFolderOrganizer(false);
 
   // Collect list of modules from Tracker Geometry
   // book histo per each detector module
   auto ids = TG->detIds();  // or detUnitIds?
   for (DetId id : ids) {
     auto ModuleID = id.rawId();
     auto isPixel = id.subdetId() == 1 || id.subdetId() == 2;
     if (isPixel != (pixel_or_strip == TRACKERTYPE_PIXEL))
       continue;
 
     // Book module histogramms?
     if (ModOn) {
       switch (id.subdetId()) {
         case 1:
           pixel_organizer.setModuleFolder(ibooker, ModuleID, 0);
           break;
         case 2:
           pixel_organizer.setModuleFolder(ibooker, ModuleID, 0);
           break;
         default:
           strip_organizer.setDetectorFolder(ModuleID, tTopo);
       }
       {
         // this sounds strip specific but also works for pixel
         std::string hid = hidmanager.createHistoId("HitResidualsX", "det", ModuleID);
         std::string normhid = hidmanager.createHistoId("NormalizedHitResidualsX", "det", ModuleID);
         auto &histos = m_ModuleResiduals[std::make_pair("", ModuleID)];
         histos.x.base = ibooker.book1D(hid, hid, i_residuals_Nbins, d_residual_xmin, d_residual_xmax);
         histos.x.base->setAxisTitle("(x_{pred} - x_{rec})' [cm]");
         histos.x.normed = ibooker.book1D(normhid, normhid, i_normres_Nbins, d_normres_xmin, d_normres_xmax);
         histos.x.normed->setAxisTitle("(x_{pred} - x_{rec})'/#sigma");
       }
       {
         std::string hid = hidmanager.createHistoId("HitResidualsY", "det", ModuleID);
         std::string normhid = hidmanager.createHistoId("NormalizedHitResidualsY", "det", ModuleID);
         auto &histos = m_ModuleResiduals[std::make_pair("", ModuleID)];
         histos.y.base = ibooker.book1D(hid, hid, i_residuals_Nbins, d_residual_xmin, d_residual_xmax);
         histos.y.base->setAxisTitle("(y_{pred} - y_{rec})' [cm]");
         histos.y.normed = ibooker.book1D(normhid, normhid, i_normres_Nbins, d_normres_xmin, d_normres_xmax);
         histos.y.normed->setAxisTitle("(y_{pred} - y_{rec})'/#sigma");
       }
     }
 
     auto subdetandlayer = findSubdetAndLayer(ModuleID, tTopo);
     if (m_SubdetLayerResiduals.find(subdetandlayer) == m_SubdetLayerResiduals.end()) {
       // add new histograms
       auto &histos = m_SubdetLayerResiduals[subdetandlayer];
       switch (id.subdetId()) {
         // Pixel Barrel, Endcap
         // We can't use the folder organizer here (SiPixelActionExecutor.cc#1638
         // does the same)
         case 1:
           ibooker.setCurrentFolder("Pixel/Barrel");
           break;
         case 2:
           ibooker.setCurrentFolder("Pixel/Endcap");
           break;
         // All strip
         default:
           strip_organizer.setLayerFolder(ModuleID, tTopo, subdetandlayer.second);
       }
 
       auto isBarrel = subdetandlayer.first.find("B") != std::string::npos;
 
       auto xy = std::vector<std::pair<HistoPair &, const char *>>{std::make_pair(std::ref(histos.x), "X"),
                                                                   std::make_pair(std::ref(histos.y), "Y")};
       for (auto &histopair : xy) {
         // book histogramms on layer level, check for barrel/pixel only for
         // correct labeling
 
         // Skip the Y plots for strips.
         if (!isPixel && histopair.second[0] == 'Y')
           continue;
 
         std::string histoname = isPixel ? (  // Pixel name
                                               Form("HitResiduals%s_%s%d",
                                                    histopair.second,
                                                    isBarrel ? "L" : (subdetandlayer.second > 0 ? "Dp" : "Dm"),
                                                    std::abs(subdetandlayer.second)))
                                         : (Form("HitResiduals_%s__%s__%d",  // Strip TODO: We use a
                                                                             // legacy name.
                                                 subdetandlayer.first.c_str(),
                                                 isBarrel ? "Layer" : "wheel",
                                                 std::abs(subdetandlayer.second)));
 
         std::string histotitle = Form("HitResiduals %s on %s%s full %s %d",
                                       histopair.second,
                                       subdetandlayer.first.c_str(),
                                       isBarrel ? "" : (subdetandlayer.second > 0 ? "+" : "-"),
                                       isBarrel ? "Layer" : (isPixel ? "Disk" : "Wheel"),
                                       std::abs(subdetandlayer.second));
 
         std::string normhistoname = Form("Normalized%s", histoname.c_str());
         std::string normhistotitle = Form("Normalized%s", histotitle.c_str());
 
         // std::cout << "##### Booking: " << ibooker.pwd() << " title " <<
         // histoname << std::endl;
 
         histopair.first.base =
             ibooker.book1D(histoname.c_str(), histotitle.c_str(), i_residuals_Nbins, d_residual_xmin, d_residual_xmax);
         histopair.first.base->setAxisTitle("(x_{pred} - x_{rec})' [cm]");
 
         histopair.first.normed = ibooker.book1D(
             normhistoname.c_str(), normhistotitle.c_str(), i_normres_Nbins, d_normres_xmin, d_normres_xmax);
         histopair.first.normed->setAxisTitle("(x_{pred} - x_{rec})'/#sigma");
       }
     }
   }  // end loop over activeDets
 }

template<TrackerType pixel_or_strip>

void MonitorTrackResidualsBase< pixel_or_strip >::dqmBeginRun	(	const edm::Run &	,
		const edm::EventSetup &
	)

override

Definition at line 54 of file MonitorTrackResiduals.cc.

References MonitorTrackResidualsBase< pixel_or_strip >::genTriggerEventFlag_, GenericTriggerEventFlag::initRun(), and GenericTriggerEventFlag::on().

                                                                                                           {
   // Initialize the GenericTriggerEventFlag
   if (genTriggerEventFlag_->on())
     genTriggerEventFlag_->initRun(run, iSetup);
 }

template<TrackerType pixel_or_strip>

std::pair< std::string, int32_t > MonitorTrackResidualsBase< pixel_or_strip >::findSubdetAndLayer	(	uint32_t	ModuleID,
		const TrackerTopology *	tTopo
	)

private

Definition at line 61 of file MonitorTrackResiduals.cc.

References TrackerTopology::pxbLayer(), TrackerTopology::pxfDisk(), TrackerTopology::pxfSide(), AlCaHLTBitMon_QueryRunRegistry::string, TrackerTopology::tecSide(), TrackerTopology::tecWheel(), TrackerTopology::tibLayer(), TrackerTopology::tidSide(), TrackerTopology::tidWheel(), and TrackerTopology::tobLayer().

Referenced by MonitorTrackResidualsBase< pixel_or_strip >::analyze(), and MonitorTrackResidualsBase< pixel_or_strip >::createMEs().

                                                      {
   std::string subdet = "";
   int32_t layer = 0;
   auto id = DetId(ModuleID);
   switch (id.subdetId()) {
     // Pixel Barrel, Endcap
     case 1:
       subdet = "BPIX";
       layer = tTopo->pxbLayer(id);
       break;
     case 2:
       subdet = "FPIX";
       layer = tTopo->pxfDisk(id) * (tTopo->pxfSide(ModuleID) == 1 ? -1 : +1);
       break;
     // Strip TIB, TID, TOB, TEC
     case 3:
       subdet = "TIB";
       layer = tTopo->tibLayer(id);
       break;
     case 4:
       subdet = "TID";
       layer = tTopo->tidWheel(id) * (tTopo->tidSide(ModuleID) == 1 ? -1 : +1);
       break;
     case 5:
       subdet = "TOB";
       layer = tTopo->tobLayer(id);
       break;
     case 6:
       subdet = "TEC";
       layer = tTopo->tecWheel(id) * (tTopo->tecSide(ModuleID) == 1 ? -1 : +1);
       break;
     default:
       // TODO: Fail loudly.
       subdet = "UNKNOWN";
       layer = 0;
   }
   return std::make_pair(subdet, layer);
 }