ASTROSAT CZTI

Data Quality Report

Orbit 20180213_G08_041T01_9000001892_level2

Creation date: 2018-07-16T10:34:37.798792
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/AS1G08_041T01_9000001892cztM0_level2_bc.evt modeM0/AS1G08_041T01_9000001892cztM0_level2_quad_clean.evt
Size (bytes)2,493,552,960690,520,320
Size2.3 GB 658.5 MB
Events in quadrant A11,960,2704,483,660
Events in quadrant B30,233,7184,000,591
Events in quadrant C10,766,0214,481,910
Events in quadrant D18,839,4864,205,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011100
B011100
C011100
D011100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01159090
B02012230
C01116430
D01408790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545168121.489471%
B545161177321.595495%
C545164220.774085%
D5451624544.501431%

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 61722 54523 8 8 0.01% 0.01%
B 61722 54471 521 521 0.84% 0.96%
C 61722 54521 0 0 0.00% 0.00%
D 61722 54520 265 265 0.43% 0.49%

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 13 248 387899 630.28 2782 2724 611.1
A 12 189 210787 340.46 2782 2724 611.1
A 15 174 201253 324.86 2782 2724 611.1
B 0 85 11952166 24887.71 2489 2421 480.1
B 4 239 5877810 12236.66 2489 2421 480.1
B 0 219 1069318 2222.02 2489 2421 480.1
C 4 112 19524 27.82 2738 2708 604.4
C 13 61 16467 22.77 2738 2708 604.4
C 8 128 16354 22.58 2738 2708 604.4
D 1 52 6262537 9931.34 2706 2610 630.3
D 8 195 669411 1057.88 2706 2610 630.3
D 4 95 579860 915.8 2706 2610 630.3

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