ASTROSAT CZTI

Data Quality Report

Orbit 36448

Creation date: 2022-07-19T04:46:00.390424
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/AS1C07_009T01_9000005200_36448cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36448cztM0_level2_quad_clean.evt
Size (bytes)417,067,20078,166,080
Size397.7 MB 74.5 MB
Events in quadrant A2,659,913515,391
Events in quadrant B3,520,106506,278
Events in quadrant C2,860,778500,023
Events in quadrant D3,238,153482,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110052
B0138401
C0115161
D0129531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5180100.193050%
B51801563.011583%
C5180531.023166%
D51801072.065637%

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 7153 5181 1 1 0.01% 0.02%
B 7153 5181 95 95 1.33% 1.83%
C 7153 5181 35 35 0.49% 0.68%
D 7153 5181 82 82 1.15% 1.58%

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 10 83 154305 1202.47 641 630 127.8
A 9 143 14475 108.33 641 630 127.8
A 13 254 9370 68.39 641 630 127.8
B 5 255 500657 4330.53 620 605 115.5
B 5 172 308538 2666.75 620 605 115.5
B 0 189 69674 598.15 620 605 115.5
C 15 214 222402 1605.01 606 612 138.2
C 0 207 155636 1121.85 606 612 138.2
C 0 10 113594 817.61 606 612 138.2
D 12 233 277572 1911.56 615 601 144.9
D 12 6 196534 1352.26 615 601 144.9
D 13 171 127995 879.23 615 601 144.9

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