that the $\gamma$–ray images have their head closer to the assumed source position in the imaging camera and thus can be selected preferentially by imposing Asymmetry $>$0 cut.

The upgrade of the telescope has led to an increase in the prompt coincidence rate from 2.33 Hz to 4.70 Hz close to the zenith. Furthermore, as a result of the upgrade the $\gamma$–ray rate from the Crab Nebula has also increased from 9.13 h$^{-1}$ to 15.30 h$^{-1}$ and this translates to the reduction in the telescope threshold energy from 1.2 TeV to 0.87 TeV.

TACTIC Observations and Results
===============================

The blazar 1ES 1218+304 was monitored with the $TACTIC$ from March 1, 2013 to April 15, 2013 (MJD 56352–56397) at zenith angles between $6^{\circ}$ and $45^{\circ}$. All the data were collected in tracking mode, during which the telescope continuously monitored the source. This mode of observation maximizes the source observation time and increases the possibility of detecting flaring activity from the source. About 54 h of data were collected during 18 nights of observations as per the details summarized in Table 1.

  Month              Observation dates         Observation Time (h)   Selected data (h)  
  ------------ ------------------------------ ---------------------- ------------------- --
  March 2013    3,4,8,9,10,12,13,14,17,18,19          26.00                 16.79        
  April 