ASTROSAT CZTI

Data Quality Report

Orbit 31250

Creation date: 2024-06-27T20:25:37.015547
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/AS1A10_073T02_9000004522_31250cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31250cztM0_level2_quad_clean.evt
Size (bytes)618,163,20071,691,840
Size589.5 MB 68.4 MB
Events in quadrant A3,442,306442,972
Events in quadrant B5,304,814441,035
Events in quadrant C3,898,382431,598
Events in quadrant D5,648,222413,336

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141002
B0199772
C0157142
D0216672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6323510.806579%
B63241422.245414%
C63242353.716003%
D63241842.909551%

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 7583 6324 0 0 0.00% 0.00%
B 7584 6325 8 8 0.11% 0.13%
C 7584 6325 37 37 0.49% 0.58%
D 7584 6325 138 138 1.82% 2.18%

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 13 254 11650 61.72 892 879 174.5
A 3 137 8088 41.31 892 879 174.5
A 0 226 7512 38.01 892 879 174.5
B 6 159 1655979 10112.62 880 861 163.7
B 4 80 106922 648.02 880 861 163.7
B 0 190 56787 341.7 880 861 163.7
C 0 10 192567 980.63 852 860 195.5
C 3 233 169679 863.55 852 860 195.5
C 14 238 140680 715.21 852 860 195.5
D 8 195 2116209 9744.98 860 841 217.1
D 12 233 166389 762.64 860 841 217.1
D 2 250 88217 402.52 860 841 217.1

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