ASTROSAT CZTI

Data Quality Report

Orbit 31813

Creation date: 2024-06-27T20:33:03.969955
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/AS1A10_109T01_9000004646_31813cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31813cztM0_level2_quad_clean.evt
Size (bytes)714,003,84075,352,320
Size680.9 MB 71.9 MB
Events in quadrant A7,237,092409,793
Events in quadrant B5,807,987485,321
Events in quadrant C4,057,162468,509
Events in quadrant D4,078,962460,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257442
B0219612
C0161372
D0164362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554158524.183705%
B65553295.019069%
C65553485.308924%
D65551101.678108%

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 8544 6556 1067 1067 12.49% 16.28%
B 8545 6557 54 54 0.63% 0.82%
C 8545 6557 93 93 1.09% 1.42%
D 8545 6557 19 19 0.22% 0.29%

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 0 13 4147983 26017.8 797 781 159.4
A 13 6 12055 70.73 797 781 159.4
A 13 254 10953 63.81 797 781 159.4
B 6 159 1719559 10508.73 858 838 163.6
B 4 80 390291 2381.22 858 838 163.6
B 10 245 320831 1956.53 858 838 163.6
C 0 10 585803 3042.28 817 820 192.3
C 14 238 146246 756.31 817 820 192.3
C 3 233 80100 412.31 817 820 192.3
D 8 195 790394 3926.63 844 825 201.1
D 2 250 40354 196.58 844 825 201.1
D 5 243 38487 187.3 844 825 201.1

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