ASTROSAT CZTI

Data Quality Report

Orbit 15173

Creation date: 2024-06-27T17:04:48.619277
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/AS1T02_068T01_9000002238_15173cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15173cztM0_level2_quad_clean.evt
Size (bytes)595,298,88077,163,840
Size567.7 MB 73.6 MB
Events in quadrant A3,952,861460,888
Events in quadrant B3,632,310467,931
Events in quadrant C4,132,209455,882
Events in quadrant D5,810,560437,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166412
B0154681
C0166621
D0223641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73802643.577236%
B73802623.550136%
C73801812.452575%
D738086311.693767%

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 7496 7382 8 8 0.11% 0.11%
B 7496 7382 4 4 0.05% 0.05%
C 7496 7382 1 1 0.01% 0.01%
D 7496 7382 649 649 8.66% 8.79%

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 15 239 330608 1790.72 899 877 184.1
A 9 143 89685 482.3 899 877 184.1
A 12 189 43795 233.08 899 877 184.1
B 3 64 34716 190.97 903 876 177.2
B 0 189 25991 141.73 903 876 177.2
B 12 111 21126 114.28 903 876 177.2
C 3 233 685868 3330.48 880 883 205.7
C 14 234 7042 29.95 880 883 205.7
C 13 61 6257 26.13 880 883 205.7
D 2 33 2486544 11963.25 851 826 207.8
D 12 222 30132 141.04 851 826 207.8
D 2 16 28650 133.91 851 826 207.8

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