ASTROSAT CZTI

Data Quality Report

Orbit 21370

Creation date: 2024-06-27T18:26:59.809636
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/AS1A06_009T05_9000003154_21370cztM0_level2.evt modeM0/AS1A06_009T05_9000003154_21370cztM0_level2_quad_clean.evt
Size (bytes)519,546,24097,280,640
Size495.5 MB 92.8 MB
Events in quadrant A3,603,683619,831
Events in quadrant B3,649,227624,279
Events in quadrant C3,407,937601,644
Events in quadrant D4,570,029583,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154851
B0156881
C0151072
D0185551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7420290.390836%
B7420340.458221%
C7419390.525677%
D74201451.954178%

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 7845 7421 6 6 0.08% 0.08%
B 7845 7420 0 0 0.00% 0.00%
C 7844 7420 1 1 0.01% 0.01%
D 7845 7421 114 114 1.45% 1.54%

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 5 168 112481 630.42 880 862 177.1
A 5 16 76874 429.31 880 862 177.1
A 15 174 14093 74.73 880 862 177.1
B 0 230 66961 391.7 880 858 168.8
B 0 190 39641 229.81 880 858 168.8
B 12 111 20063 113.8 880 858 168.8
C 14 238 130717 657.29 838 842 197.6
C 10 91 6198 27.11 838 842 197.6
C 13 61 5961 25.91 838 842 197.6
D 1 52 645172 3130.26 843 817 205.8
D 12 235 288801 1399.02 843 817 205.8
D 13 153 102563 494.28 843 817 205.8

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