ASTROSAT CZTI

Data Quality Report

Orbit 12761

Creation date: 2024-06-27T16:32:20.212620
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_112T01_9000001884_12761cztM0_level2.evt modeM0/AS1A04_112T01_9000001884_12761cztM0_level2_quad_clean.evt
Size (bytes)527,238,720111,611,520
Size502.8 MB 106.4 MB
Events in quadrant A3,572,790738,237
Events in quadrant B4,426,343727,440
Events in quadrant C3,434,457736,099
Events in quadrant D4,070,457702,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147393
B0174542
C0148982
D0167122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68211051.539364%
B68214997.315643%
C68211552.272394%
D68212363.459903%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8653 6825 6 6 0.07% 0.09%
B 8653 6825 292 292 3.37% 4.28%
C 8653 6825 49 49 0.57% 0.72%
D 8653 6825 130 130 1.50% 1.90%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 239 244506 1467.15 818 799 166.1
A 12 189 86794 517.7 818 799 166.1
A 15 222 47773 282.79 818 799 166.1
B 4 239 1111787 7378.94 797 778 150.6
B 3 64 93319 614.63 797 778 150.6
B 0 214 21965 140.72 797 778 150.6
C 15 208 337035 1850.54 792 794 181.7
C 14 234 6716 32.59 792 794 181.7
C 13 61 5828 27.71 792 794 181.7
D 1 52 746030 3908.41 789 764 190.7
D 8 195 115095 599.59 789 764 190.7
D 2 136 87980 457.39 789 764 190.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter