diff --git a/sbnobj/Common/CRT/CRTHit.hh b/sbnobj/Common/CRT/CRTHit.hh
index 21499ab1..bb606e59 100644
--- a/sbnobj/Common/CRT/CRTHit.hh
+++ b/sbnobj/Common/CRT/CRTHit.hh
@@ -22,30 +22,31 @@ namespace sbn::crt {
 
     struct CRTHit{
 
+      static constexpr float kInvalidF = std::numeric_limits<float>::lowest();
+      static constexpr double kInvalidD = std::numeric_limits<double>::lowest();
+
       std::vector<uint8_t> feb_id; ///< FEB address
       std::map< uint8_t, std::vector<std::pair<int,float> > > pesmap; ///< Saves signal hit information (FEB, local-channel and PE) .
-      float         peshit; ///< Total photo-electron (PE) in a crt hit.
+      float         peshit{kInvalidF}; ///< Total photo-electron (PE) in a crt hit.
 
-      uint64_t       ts0_s; ///< Second-only part of timestamp T0.
-      double    ts0_s_corr; ///< [Honestly, not sure at this point, it was there since long time (BB)]
-      double        ts0_ns; ///< Timestamp T0 (from White Rabbit), in UTC absolute time scale in nanoseconds from the Epoch.
-      double   ts0_ns_corr; ///< [Honestly, not sure at this point, it was there since long time (BB)]
+      uint64_t       ts0_s{-1}; ///< Second-only part of timestamp T0.
+      double    ts0_s_corr{kInvalidD}; ///< [Honestly, not sure at this point, it was there since long time (BB)]
+      double        ts0_ns{kInvalidD}; ///< Timestamp T0 (from White Rabbit), in UTC absolute time scale in nanoseconds from the Epoch.
+      double   ts0_ns_corr{kInvalidD}; ///< [Honestly, not sure at this point, it was there since long time (BB)]
 
-      double        ts1_ns; ///< Timestamp T1 ([signal time w.r.t. Trigger time]), 
+      double        ts1_ns{kInvalidD}; ///< Timestamp T1 ([signal time w.r.t. Trigger time]), 
 
-      int            plane; ///< Name of the CRT wall (in the form of numbers).
+      int            plane{-1}; ///< Name of the CRT wall (in the form of numbers).
 
-      float          x_pos; ///< position in x-direction (cm).
-      float          x_err; ///< position uncertainty in x-direction (cm).
-      float          y_pos; ///< position in y-direction (cm).
-      float          y_err; ///< position uncertainty in y-direction (cm).
-      float          z_pos; ///< position in z-direction (cm).
-      float          z_err; ///< position uncertainty in z-direction (cm).
+      float          x_pos{kInvalidF}; ///< position in x-direction (cm).
+      float          x_err{kInvalidF}; ///< position uncertainty in x-direction (cm).
+      float          y_pos{kInvalidF}; ///< position in y-direction (cm).
+      float          y_err{kInvalidF}; ///< position uncertainty in y-direction (cm).
+      float          z_pos{kInvalidF}; ///< position in z-direction (cm).
+      float          z_err{kInvalidF}; ///< position uncertainty in z-direction (cm).
 
       std::string   tagger; ///< Name of the CRT wall (in the form of strings).
 
-      CRTHit() {}
-
       int64_t ts0() const { return static_cast<int64_t>(ts0_s) * 1'000'000'000LL + static_cast<int64_t>(ts0_ns); }
       // T1 is a relative time not a timestamp, so we don't need second-part.
       // nano-second part is enough and we saved entire time there.