ASTROSAT CZTI

Data Quality Report

Orbit 20181205_T03_063T01_9000002550_level2

Creation date: 2018-12-07T15:11:40.236495
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_063T01_9000002550cztM0_level2_bc.evt modeM0/AS1T03_063T01_9000002550cztM0_level2_quad_clean.evt
Size (bytes)2,203,225,920843,353,280
Size2.1 GB 804.3 MB
Events in quadrant A14,166,1435,313,683
Events in quadrant B15,632,7615,392,908
Events in quadrant C14,214,9865,171,536
Events in quadrant D18,122,2855,051,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01413110
B01476030
C01421870
D01559310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013680
B013680
C013680
D013680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A672987081.052037%
B672999281.378921%
C672998481.260048%
D6729913081.943565%

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 78270 67299 18 18 0.02% 0.03%
B 78270 67301 14 14 0.02% 0.02%
C 78270 67300 3 3 0.00% 0.00%
D 78270 67298 139 139 0.18% 0.21%

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 15 174 322710 414.85 3558 3487 769.5
A 0 23 155148 197.09 3558 3487 769.5
A 0 226 31969 37.01 3558 3487 769.5
B 7 220 516095 754.02 3599 3503 679.8
B 3 209 252773 366.67 3599 3503 679.8
B 0 189 244451 354.43 3599 3503 679.8
C 3 233 490073 613.13 3430 3415 793.7
C 7 220 326038 406.47 3430 3415 793.7
C 1 16 139422 171.35 3430 3415 793.7
D 1 52 1212949 1523.06 3487 3366 794.2
D 15 0 1044431 1310.87 3487 3366 794.2
D 13 189 769459 964.64 3487 3366 794.2

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