ASTROSAT CZTI

Data Quality Report

Orbit 20436

Creation date: 2024-06-27T18:15:23.960344
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_188T01_9000003018_20436cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20436cztM0_level2_quad_clean.evt
Size (bytes)445,104,00086,284,800
Size424.5 MB 82.3 MB
Events in quadrant A3,174,872556,034
Events in quadrant B3,328,824568,437
Events in quadrant C3,209,677534,065
Events in quadrant D3,342,455518,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133022
B0137152
C0133132
D0139702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240360.576923%
B6240510.817308%
C6240530.849359%
D6240600.961538%

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 7510 6240 0 0 0.00% 0.00%
B 7510 6241 4 4 0.05% 0.06%
C 7510 6241 0 0 0.00% 0.00%
D 7510 6241 34 34 0.45% 0.54%

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 0 226 7299 39.95 824 811 162.4
A 3 137 6422 34.55 824 811 162.4
A 12 194 5856 31.07 824 811 162.4
B 10 245 47859 309.6 822 805 152.0
B 12 111 18029 113.33 822 805 152.0
B 0 189 17706 111.2 822 805 152.0
C 14 238 126738 704.57 778 783 178.8
C 3 247 47288 260.14 778 783 178.8
C 13 61 5565 26.75 778 783 178.8
D 1 52 254001 1350.07 783 762 187.6
D 13 153 88517 467.84 783 762 187.6
D 7 96 40832 213.62 783 762 187.6

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