ASTROSAT CZTI

Data Quality Report

Orbit 12106

Creation date: 2024-06-27T16:22:29.922152
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/AS1G08_065T01_9000001796_12106cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12106cztM0_level2_quad_clean.evt
Size (bytes)667,981,440119,240,640
Size637.0 MB 113.7 MB
Events in quadrant A4,200,880783,277
Events in quadrant B5,965,217739,933
Events in quadrant C3,801,130779,094
Events in quadrant D5,705,455737,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181833
B0232832
C0172582
D0227752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82251992.419453%
B82257469.069909%
C8225770.936170%
D82253864.693009%

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 8661 8229 22 22 0.25% 0.27%
B 8661 8229 354 354 4.09% 4.30%
C 8661 8229 1 1 0.01% 0.01%
D 8661 8229 222 222 2.56% 2.70%

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 1 162 154446 764.45 984 965 200.8
A 1 178 66441 326.12 984 965 200.8
A 1 161 63175 309.85 984 965 200.8
B 4 239 1909544 10452.86 950 927 182.6
B 15 204 166003 904.07 950 927 182.6
B 11 51 123172 669.5 950 927 182.6
C 15 208 22364 95.47 961 965 224.1
C 8 128 11003 44.78 961 965 224.1
C 14 234 10713 43.49 961 965 224.1
D 1 52 1213974 5295.84 937 909 229.1
D 8 195 398543 1735.94 937 909 229.1
D 4 95 230592 1002.72 937 909 229.1

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