ASTROSAT CZTI

Data Quality Report

Orbit 02470

Creation date: 2024-06-27T14:18:14.510032
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/AS1G02_018T06_9000000370_02470cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02470cztM0_level2_quad_clean.evt
Size (bytes)451,247,04086,074,560
Size430.3 MB 82.1 MB
Events in quadrant A3,460,461524,082
Events in quadrant B3,281,710539,357
Events in quadrant C3,332,617529,487
Events in quadrant D3,102,290512,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150973
B0146572
C0150502
D0147472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7196330.458588%
B7196300.416898%
C7196530.736520%
D7196130.180656%

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 8966 7198 0 0 0.00% 0.00%
B 8966 7198 2 2 0.02% 0.03%
C 8966 7198 20 20 0.22% 0.28%
D 8966 7198 5 5 0.06% 0.07%

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 8 15 325844 1962.2 812 794 165.7
A 12 194 9077 50.0 812 794 165.7
A 0 226 8669 47.54 812 794 165.7
B 12 0 23146 138.9 832 811 160.8
B 4 48 17012 100.75 832 811 160.8
B 15 85 12589 73.25 832 811 160.8
C 14 223 124743 659.98 794 796 187.8
C 10 82 73165 385.34 794 796 187.8
C 10 65 19944 101.96 794 796 187.8
D 2 14 16936 86.43 784 766 187.1
D 10 149 14985 76.01 784 766 187.1
D 1 20 14570 73.79 784 766 187.1

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