ASTROSAT CZTI

Data Quality Report

Orbit 36230

Creation date: 2022-06-11T00:45:23.073202
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/AS1A11_080T02_9000005176_36230cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36230cztM0_level2_quad_clean.evt
Size (bytes)596,088,00065,102,400
Size568.5 MB 62.1 MB
Events in quadrant A2,763,727437,919
Events in quadrant B3,898,980424,051
Events in quadrant C2,965,650422,944
Events in quadrant D8,074,156323,260

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115243
B0149622
C0118702
D0275442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5177440.849913%
B51773466.683407%
C51771472.839482%
D5177181735.097547%

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 7091 5178 32 32 0.45% 0.62%
B 7091 5178 229 229 3.23% 4.42%
C 7091 5178 106 106 1.49% 2.05%
D 7091 5178 1805 1805 25.45% 34.86%

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 188739 1523.3 614 603 123.5
A 7 16 151469 1221.53 614 603 123.5
A 9 143 24605 194.34 614 603 123.5
B 5 236 799996 7045.59 601 588 113.5
B 5 172 292027 2568.6 601 588 113.5
B 0 213 125973 1105.08 601 588 113.5
C 0 10 391712 2812.68 597 601 139.1
C 15 214 215269 1543.79 597 601 139.1
C 6 255 14627 100.87 597 601 139.1
D 12 227 4042569 32231.31 513 498 125.4
D 12 6 1235158 9845.13 513 498 125.4
D 12 235 396370 3156.67 513 498 125.4

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