ASTROSAT CZTI

Data Quality Report

Orbit 17834

Creation date: 2024-06-27T17:41:34.062777
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/AS1A05_025T04_9000002652_17834cztM0_level2.evt modeM0/AS1A05_025T04_9000002652_17834cztM0_level2_quad_clean.evt
Size (bytes)482,256,00092,666,880
Size459.9 MB 88.4 MB
Events in quadrant A3,138,157593,194
Events in quadrant B3,350,051610,365
Events in quadrant C3,504,459584,596
Events in quadrant D4,165,526559,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136492
B0139942
C0142892
D0168972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6582230.349438%
B6582500.759648%
C6582781.185050%
D65822003.038590%

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 7792 6583 0 0 0.00% 0.00%
B 7792 6583 6 6 0.08% 0.09%
C 7792 6583 0 0 0.00% 0.00%
D 7792 6583 153 153 1.96% 2.32%

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 16180 94.4 812 797 163.0
A 0 226 7114 38.77 812 797 163.0
A 3 137 6178 33.02 812 797 163.0
B 15 222 80903 517.47 823 804 154.8
B 0 219 22734 141.68 823 804 154.8
B 12 111 18350 113.35 823 804 154.8
C 13 62 254156 1358.95 795 802 186.4
C 14 238 123622 658.79 795 802 186.4
C 5 218 24961 129.58 795 802 186.4
D 7 238 1099282 5256.95 781 766 209.0
D 2 234 25096 116.43 781 766 209.0
D 10 70 23321 107.94 781 766 209.0

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