diff --git a/CHANGELOG-unreleased.md b/CHANGELOG-unreleased.md
index 75494bb11..d2a93fa95 100644
--- a/CHANGELOG-unreleased.md
+++ b/CHANGELOG-unreleased.md
@@ -9,8 +9,10 @@ the released changes.
 
 ## Unreleased
 ### Changed
+- Command line scripts now automatically do `allow_tcb` and `allow_T2` while reading par files.
 - Updated the `plot_chains` function in `event_optimize` so that the subplots are a fixed size to prevent the subplots from being condensed in the case of many fit parameters.
 ### Added
+- Added an option `nbin` to `photonphase` to decide how many phase bins to use for the phaseogram
 - Added an option `linearize_model` to speed up the photon phases calculation within `event_optimize` through the designmatrix.
 - Added AIC and BIC calculation to be written in the post fit parfile from `event_optimize`
 - When TCB->TDB conversion info is missing, will print parameter name
diff --git a/src/pint/__init__.py b/src/pint/__init__.py
index 5706dff7e..7906be01f 100644
--- a/src/pint/__init__.py
+++ b/src/pint/__init__.py
@@ -105,6 +105,9 @@
     "hourangle_second": hourangle_second,
 }
 
+# define a units equivalency for gauss in cgs
+gauss_equiv = [u.Gauss, u.Hz * (u.g / u.cm) ** (1 / 2), lambda x: x, lambda x: x]
+
 import astropy.version
 
 if astropy.version.major < 4:
diff --git a/src/pint/derived_quantities.py b/src/pint/derived_quantities.py
index d5852ae4b..24dcb1934 100644
--- a/src/pint/derived_quantities.py
+++ b/src/pint/derived_quantities.py
@@ -136,6 +136,14 @@ def pferrs(
     return (forp, forperr, fdorpd, fdorpderr)
 
 
+def _to_gauss(B: u.Quantity) -> u.G:
+    """Convert quantity with mass, length, and time units to Gauss.
+
+    In cgs units, magnetic field is has units (mass/length)^(1/2) / time.
+    """
+    return B.to(u.Gauss, equivalencies=[pint.gauss_equiv])
+
+
 @u.quantity_input(f=u.Hz, fdot=u.Hz / u.s, fo=u.Hz)
 def pulsar_age(
     f: u.Quantity, fdot: u.Quantity, n: int = 3, fo: u.Quantity = 1e99 * u.Hz
@@ -219,12 +227,16 @@ def pulsar_edot(
     return (-4.0 * np.pi**2 * I * f * fdot).to(u.erg / u.s)
 
 
-@u.quantity_input(f=u.Hz, fdot=u.Hz / u.s)
-def pulsar_B(f: u.Quantity, fdot: u.Quantity) -> u.G:
+@u.quantity_input(f=u.Hz, fdot=u.Hz / u.s, I=u.g * u.cm**2, R=u.km)
+def pulsar_B(
+    f: u.Quantity,
+    fdot: u.Quantity,
+    I: u.Quantity = 1.0e45 * u.g * u.cm**2,
+    R: u.Quantity = 10 * u.km,
+) -> u.G:
     r"""Compute pulsar surface magnetic field
 
-    Return the estimated pulsar surface magnetic field strength
-    given the spin frequency and frequency derivative.
+    Return the pulsar surface magnetic field strength given the spin frequency `f` and frequency derivative `fdot`.
 
     Parameters
     ----------
@@ -232,6 +244,10 @@ def pulsar_B(f: u.Quantity, fdot: u.Quantity) -> u.G:
         pulsar frequency
     fdot : astropy.units.Quantity
         frequency derivative :math:`\dot f`
+    I : astropy.units.Quantity, optional
+        pulsar moment of inertia, default of 1e45 g*cm**2
+    R : astropy.units.Quantity, optional
+        pulsar radius, default of 10 km
 
     Returns
     -------
@@ -247,15 +263,19 @@ def pulsar_B(f: u.Quantity, fdot: u.Quantity) -> u.G:
 
     Notes
     -----
-    Calculates :math:`B=3.2\times 10^{19}\,{\rm  G}\sqrt{ f \dot f^{-3}}`
+    Calculates :math:`B=\sqrt{\frac{3\,I\,c^3}{8\pi^2\,R^6}\times\frac{-\dot{f}}{f^3}}`
     """
-    # This is a hack to use the traditional formula by stripping the units.
-    # It would be nice to improve this to a  proper formula with units
-    return 3.2e19 * u.G * np.sqrt(-fdot.to_value(u.Hz / u.s) / f.to_value(u.Hz) ** 3.0)
+    factor = (3.0 * I * const.c**3) / (8.0 * np.pi**2 * R**6)
+    return _to_gauss((factor * (-fdot) / f**3) ** 0.5)
 
 
-@u.quantity_input(f=u.Hz, fdot=u.Hz / u.s)
-def pulsar_B_lightcyl(f: u.Quantity, fdot: u.Quantity) -> u.G:
+@u.quantity_input(f=u.Hz, fdot=u.Hz / u.s, I=u.g * u.cm**2, R=u.km)
+def pulsar_B_lightcyl(
+    f: u.Quantity,
+    fdot: u.Quantity,
+    I: u.Quantity = 1.0e45 * u.g * u.cm**2,
+    R=10 * u.km,
+) -> u.G:
     r"""Compute pulsar magnetic field at the light cylinder
 
     Return the estimated pulsar magnetic field strength at the
@@ -268,6 +288,10 @@ def pulsar_B_lightcyl(f: u.Quantity, fdot: u.Quantity) -> u.G:
         pulsar frequency
     fdot : astropy.units.Quantity
         frequency derivative :math:`\dot f`
+    I : astropy.units.Quantity, optional
+        pulsar moment of inertia, default of 1e45 g*cm**2
+    R : astropy.units.Quantity, optional
+        pulsar radius, default of 10 km
 
     Returns
     -------
@@ -283,17 +307,10 @@ def pulsar_B_lightcyl(f: u.Quantity, fdot: u.Quantity) -> u.G:
 
     Notes
     -----
-    Calculates :math:`B_{LC} = 2.9\times 10^8\,{\rm G} P^{-5/2} \dot P^{1/2}`
+    Calculates :math:`B_{LC} = \sqrt{\frac{-24\pi^4\,I}{c^3}\dot{f}f^3}`
     """
-    p, pd = p_to_f(f, fdot)
-    # This is a hack to use the traditional formula by stripping the units.
-    # It would be nice to improve this to a  proper formula with units
-    return (
-        2.9e8
-        * u.G
-        * p.to_value(u.s) ** (-5.0 / 2.0)
-        * np.sqrt(pd.to(u.dimensionless_unscaled).value)
-    )
+    factor = 24.0 * np.pi**4.0 * I / const.c**3.0
+    return _to_gauss((factor * (-fdot) * f**3.0) ** 0.5)
 
 
 @u.quantity_input(pb=u.d, x=u.cm)
diff --git a/src/pint/pintk/pulsar.py b/src/pint/pintk/pulsar.py
index 65d8048df..ce6aa8560 100644
--- a/src/pint/pintk/pulsar.py
+++ b/src/pint/pintk/pulsar.py
@@ -151,7 +151,9 @@ def __contains__(self, key):
         return key in self.prefit_model.params
 
     def reset_model(self):
-        self.prefit_model = pint.models.get_model(self.parfile)
+        self.prefit_model = pint.models.get_model(
+            self.parfile, allow_T2=True, allow_tcb=True
+        )
         self.add_model_params()
         self.postfit_model = None
         self.postfit_resids = None
@@ -172,7 +174,9 @@ def reset_TOAs(self):
         self.update_resids()
 
     def resetAll(self):
-        self.prefit_model = pint.models.get_model(self.parfile)
+        self.prefit_model = pint.models.get_model(
+            self.parfile, allow_T2=True, allow_tcb=True
+        )
         self.postfit_model = None
         self.postfit_resids = None
         self.fitted = False
diff --git a/src/pint/scripts/compare_parfiles.py b/src/pint/scripts/compare_parfiles.py
index 0c4ca5da2..d65785041 100644
--- a/src/pint/scripts/compare_parfiles.py
+++ b/src/pint/scripts/compare_parfiles.py
@@ -83,14 +83,25 @@ def main(argv=None):
     parser.add_argument(
         "-q", "--quiet", default=0, action="count", help="Decrease output verbosity"
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
         level=pint.logging.get_level(args.loglevel, args.verbosity, args.quiet)
     )
 
-    m1 = get_model(args.input1)
-    m2 = get_model(args.input2)
+    m1 = get_model(args.input1, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb)
+    m2 = get_model(args.input2, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb)
+
     print(
         m1.compare(
             m2,
diff --git a/src/pint/scripts/convert_parfile.py b/src/pint/scripts/convert_parfile.py
index 55b45415b..2975d5acc 100644
--- a/src/pint/scripts/convert_parfile.py
+++ b/src/pint/scripts/convert_parfile.py
@@ -73,6 +73,16 @@ def main(argv=None):
     parser.add_argument(
         "-q", "--quiet", default=0, action="count", help="Decrease output verbosity"
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
@@ -83,7 +93,9 @@ def main(argv=None):
         return
 
     log.info(f"Reading '{args.input}'")
-    model = get_model(args.input)
+
+    model = get_model(args.input, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb)
+
     if hasattr(model, "BINARY") and args.binary is not None:
         log.info(f"Converting from {model.BINARY.value} to {args.binary}")
         if args.binary == "ELL1H":
diff --git a/src/pint/scripts/event_optimize.py b/src/pint/scripts/event_optimize.py
index 071860a8d..6e26ba784 100755
--- a/src/pint/scripts/event_optimize.py
+++ b/src/pint/scripts/event_optimize.py
@@ -706,6 +706,16 @@ def main(argv=None):
         action="store_true",
         dest="linearize_model",
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
@@ -739,7 +749,9 @@ def main(argv=None):
     ncores = args.ncores
 
     # Read in initial model
-    modelin = pint.models.get_model(parfile)
+    modelin = pint.models.get_model(
+        parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
 
     # File name setup and clobber file check
     filepath = args.filepath or os.getcwd()
diff --git a/src/pint/scripts/event_optimize_MCMCFitter.py b/src/pint/scripts/event_optimize_MCMCFitter.py
index bbab8ccee..7357b1028 100755
--- a/src/pint/scripts/event_optimize_MCMCFitter.py
+++ b/src/pint/scripts/event_optimize_MCMCFitter.py
@@ -128,6 +128,17 @@ def main(argv=None):
         help="Logging level",
         dest="loglevel",
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
+
     global nwalkers, nsteps, ftr
 
     args = parser.parse_args(argv)
@@ -164,7 +175,9 @@ def main(argv=None):
     wgtexp = args.wgtexp
 
     # Read in initial model
-    modelin = pint.models.get_model(parfile)
+    modelin = pint.models.get_model(
+        parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
 
     # The custom_timing version below is to manually construct the TimingModel
     # class, which allows it to be pickled. This is needed for parallelizing
diff --git a/src/pint/scripts/event_optimize_multiple.py b/src/pint/scripts/event_optimize_multiple.py
index 41316a000..0a3dc7336 100755
--- a/src/pint/scripts/event_optimize_multiple.py
+++ b/src/pint/scripts/event_optimize_multiple.py
@@ -228,6 +228,16 @@ def main(argv=None):
         help="Logging level",
         dest="loglevel",
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     global nwalkers, nsteps, ftr
 
@@ -261,7 +271,9 @@ def main(argv=None):
     wgtexp = args.wgtexp
 
     # Read in initial model
-    modelin = pint.models.get_model(parfile)
+    modelin = pint.models.get_model(
+        parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
 
     # Set the target coords for automatic weighting if necessary
     if "ELONG" in modelin.params:
diff --git a/src/pint/scripts/fermiphase.py b/src/pint/scripts/fermiphase.py
index b1427e61f..c5e43bb93 100755
--- a/src/pint/scripts/fermiphase.py
+++ b/src/pint/scripts/fermiphase.py
@@ -77,6 +77,16 @@ def main(argv=None):
     parser.add_argument(
         "-q", "--quiet", default=0, action="count", help="Decrease output verbosity"
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
@@ -88,7 +98,10 @@ def main(argv=None):
         args.addphase = True
 
     # Read in model
-    modelin = pint.models.get_model(args.parfile)
+    modelin = pint.models.get_model(
+        args.parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
+
     if "ELONG" in modelin.params:
         tc = SkyCoord(
             modelin.ELONG.quantity,
diff --git a/src/pint/scripts/photonphase.py b/src/pint/scripts/photonphase.py
index 7d72eec18..2798e0a7f 100755
--- a/src/pint/scripts/photonphase.py
+++ b/src/pint/scripts/photonphase.py
@@ -106,12 +106,25 @@ def main(argv=None):
         help="Logging level",
         dest="loglevel",
     )
+    parser.add_argument(
+        "--nbin", help="Number of phase bins in the phaseogram", default=100, type=int
+    )
     parser.add_argument(
         "-v", "--verbosity", default=0, action="count", help="Increase output verbosity"
     )
     parser.add_argument(
         "-q", "--quiet", default=0, action="count", help="Decrease output verbosity"
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
@@ -153,7 +166,10 @@ def main(argv=None):
                 "Please barycenter the event file using the official mission tools before processing with PINT"
             )
     # Read in model
-    modelin = pint.models.get_model(args.parfile)
+    modelin = pint.models.get_model(
+        args.parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
+
     use_planets = False
     if "PLANET_SHAPIRO" in modelin.params:
         if modelin.PLANET_SHAPIRO.value:
@@ -254,7 +270,7 @@ def main(argv=None):
         print("Htest : {0:.2f} ({1:.2f} sigma)".format(h, h2sig(h)))
 
     if args.plot:
-        phaseogram_binned(mjds, phases, bins=100, plotfile=args.plotfile)
+        phaseogram_binned(mjds, phases, bins=args.nbin, plotfile=args.plotfile)
 
     # Compute orbital phases for each photon TOA
     if args.addorbphase:
diff --git a/src/pint/scripts/pintbary.py b/src/pint/scripts/pintbary.py
index 4876474d8..61cdcd0a0 100755
--- a/src/pint/scripts/pintbary.py
+++ b/src/pint/scripts/pintbary.py
@@ -74,6 +74,16 @@ def main(argv=None):
     parser.add_argument(
         "-q", "--quiet", default=0, action="count", help="Decrease output verbosity"
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
@@ -105,7 +115,9 @@ def main(argv=None):
     )
 
     if args.parfile is not None:
-        m = pint.models.get_model(args.parfile)
+        m = pint.models.get_model(
+            args.parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+        )
     else:
         # Construct model by hand
         m = pint.models.StandardTimingModel
diff --git a/src/pint/scripts/pintempo.py b/src/pint/scripts/pintempo.py
index d99c772ba..ac9099008 100755
--- a/src/pint/scripts/pintempo.py
+++ b/src/pint/scripts/pintempo.py
@@ -62,6 +62,16 @@ def main(argv=None):
     parser.add_argument(
         "-q", "--quiet", default=0, action="count", help="Decrease output verbosity"
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
@@ -69,7 +79,9 @@ def main(argv=None):
     )
 
     log.info("Reading model from {0}".format(args.parfile))
-    m = pint.models.get_model(args.parfile)
+    m = pint.models.get_model(
+        args.parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
 
     log.warning(m.params)
 
diff --git a/src/pint/scripts/pintpublish.py b/src/pint/scripts/pintpublish.py
index 6d5b0142f..1828a05c6 100644
--- a/src/pint/scripts/pintpublish.py
+++ b/src/pint/scripts/pintpublish.py
@@ -59,10 +59,22 @@ def main(argv=None):
         action="store_true",
         default=False,
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
 
-    model, toas = get_model_and_toas(args.parfile, args.timfile)
+    model, toas = get_model_and_toas(
+        args.parfile, args.timfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
 
     output = publish(
         model,
diff --git a/src/pint/scripts/t2binary2pint.py b/src/pint/scripts/t2binary2pint.py
index 42d70f89a..bab43eef4 100644
--- a/src/pint/scripts/t2binary2pint.py
+++ b/src/pint/scripts/t2binary2pint.py
@@ -45,12 +45,17 @@ def main(argv=None):
         default=True,
         help="Whether to drop SINI if the model is DDK (True)",
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
 
     args = parser.parse_args(argv)
 
     mb = ModelBuilder()
 
-    model = mb(args.input_par, allow_T2=True, allow_tcb=True)
+    model = mb(args.input_par, allow_T2=True, allow_tcb=args.allow_tcb)
     model.write_parfile(args.output_par)
     print(f"Output written to {args.output_par}")
 
diff --git a/src/pint/scripts/tcb2tdb.py b/src/pint/scripts/tcb2tdb.py
index 4c427d21a..02a485d3c 100644
--- a/src/pint/scripts/tcb2tdb.py
+++ b/src/pint/scripts/tcb2tdb.py
@@ -30,11 +30,16 @@ def main(argv=None):
     )
     parser.add_argument("input_par", help="Input par file name (TCB)")
     parser.add_argument("output_par", help="Output par file name (TDB)")
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
 
     mb = ModelBuilder()
-    model = mb(args.input_par, allow_tcb=True)
+    model = mb(args.input_par, allow_tcb=True, allow_T2=args.allow_T2)
     model.write_parfile(args.output_par)
 
     log.info(f"Output written to {args.output_par}.")
diff --git a/src/pint/scripts/zima.py b/src/pint/scripts/zima.py
index 3305129f7..29b3e354c 100755
--- a/src/pint/scripts/zima.py
+++ b/src/pint/scripts/zima.py
@@ -115,6 +115,16 @@ def main(argv=None):
     parser.add_argument(
         "-q", "--quiet", default=0, action="count", help="Decrease output verbosity"
     )
+    parser.add_argument(
+        "--allow_tcb",
+        action="store_true",
+        help="Convert TCB par files to TDB automatically",
+    )
+    parser.add_argument(
+        "--allow_T2",
+        action="store_true",
+        help="Guess the underlying binary model when T2 is given",
+    )
 
     args = parser.parse_args(argv)
     pint.logging.setup(
@@ -122,7 +132,9 @@ def main(argv=None):
     )
 
     log.info("Reading model from {0}".format(args.parfile))
-    m = pint.models.get_model(args.parfile)
+    m = pint.models.get_model(
+        args.parfile, allow_T2=args.allow_T2, allow_tcb=args.allow_tcb
+    )
 
     out_format = args.format
     error = args.error * u.microsecond
diff --git a/tests/test_derived_quantities.py b/tests/test_derived_quantities.py
index cf5e845b0..833e98a86 100644
--- a/tests/test_derived_quantities.py
+++ b/tests/test_derived_quantities.py
@@ -67,7 +67,7 @@ def test_Edot():
 def test_Bfield():
     # B
     assert np.isclose(
-        pulsar_B(0.033 * u.Hz, -2.0e-15 * u.Hz / u.s), 238722891596281.66 * u.G
+        pulsar_B(0.033 * u.Hz, -2.0e-15 * u.Hz / u.s), 238693670891966.22 * u.G
     )
 
 
@@ -75,7 +75,7 @@ def test_Blc():
     # B_lc
     assert np.isclose(
         pulsar_B_lightcyl(0.033 * u.Hz, -2.0e-15 * u.Hz / u.s),
-        0.07774704753236616 * u.G,
+        0.07896965114785195 * u.G,
     )