ASTROSAT CZTI

Data Quality Report

Orbit 12159

Creation date: 2024-06-27T16:23:11.593913
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_12159cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12159cztM0_level2_quad_clean.evt
Size (bytes)509,304,96086,019,840
Size485.7 MB 82.0 MB
Events in quadrant A3,503,568550,874
Events in quadrant B4,737,198542,998
Events in quadrant C3,274,092540,530
Events in quadrant D3,478,785527,580

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144993
B0185722
C0137132
D0144812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63491462.299575%
B63494677.355489%
C63491011.590802%
D63491382.173571%

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 7635 6351 1 1 0.01% 0.02%
B 7635 6350 181 181 2.37% 2.85%
C 7635 6351 4 4 0.05% 0.06%
D 7635 6351 17 17 0.22% 0.27%

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 105404 625.74 838 822 167.1
A 1 178 49688 292.38 838 822 167.1
A 1 161 45127 265.09 838 822 167.1
B 4 239 939600 6218.71 815 798 151.0
B 0 85 185732 1225.02 815 798 151.0
B 11 51 123816 814.88 815 798 151.0
C 15 208 88476 470.91 816 820 186.1
C 13 61 6137 28.56 816 820 186.1
C 12 4 3636 15.13 816 820 186.1
D 1 52 114300 588.28 816 794 192.9
D 10 199 83376 428.01 816 794 192.9
D 13 249 40389 205.21 816 794 192.9

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