ASTROSAT CZTI

Data Quality Report

Orbit 20190730_A05_063T03_9000003066_level2

Creation date: 2021-09-01T02:46:45.664678
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/AS1A05_063T03_9000003066cztM0_level2_bc.evt modeM0/AS1A05_063T03_9000003066cztM0_level2_quad_clean.evt
Size (bytes)1,977,580,800755,951,040
Size1.8 GB 720.9 MB
Events in quadrant A11,582,8025,060,832
Events in quadrant B12,799,8194,962,556
Events in quadrant C10,919,6934,650,477
Events in quadrant D21,071,3124,683,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01094890
B01152130
C01088310
D01408690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010580
B010560
C010550
D010560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516366631.283988%
B5156510291.995540%
C516288941.731619%
D5154424114.677557%

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 67620 51816 0 0 0.00% 0.00%
B 67621 51709 16 16 0.02% 0.03%
C 67621 51781 3 3 0.00% 0.01%
D 67621 51684 621 621 0.92% 1.20%

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 6 240 130294 199.52 2980 2933 638.3
A 5 16 25327 35.08 2980 2933 638.3
A 0 226 19461 25.89 2980 2933 638.3
B 7 220 743034 1369.7 2935 2870 540.4
B 0 197 240165 439.12 2935 2870 540.4
B 0 229 151927 275.83 2935 2870 540.4
C 14 238 222987 329.54 2731 2690 668.5
C 3 233 105753 154.17 2731 2690 668.5
C 9 54 65862 94.5 2731 2690 668.5
D 1 52 4942819 7451.7 2886 2796 662.9
D 1 20 2095614 3156.88 2886 2796 662.9
D 5 222 2035986 3066.93 2886 2796 662.9

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