ASTROSAT CZTI

Data Quality Report

Orbit 30864

Creation date: 2024-06-27T20:20:31.344779
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_071T46_9000004460_30864cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30864cztM0_level2_quad_clean.evt
Size (bytes)751,417,92081,397,440
Size716.6 MB 77.6 MB
Events in quadrant A3,692,347512,575
Events in quadrant B10,630,894484,129
Events in quadrant C3,776,681484,027
Events in quadrant D4,168,033479,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153232
B0366512
C0154502
D0168503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72351832.529371%
B7235158721.935038%
C72352273.137526%
D72341522.101189%

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 7765 7235 7 7 0.09% 0.10%
B 7765 7235 589 589 7.59% 8.14%
C 7765 7235 2 2 0.03% 0.03%
D 7764 7234 23 23 0.30% 0.32%

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 0 13 111816 591.37 928 908 187.5
A 13 254 13712 68.27 928 908 187.5
A 3 137 9623 46.47 928 908 187.5
B 6 36 5123133 30125.43 872 849 170.0
B 6 159 1875917 11027.74 872 849 170.0
B 0 156 72423 420.94 872 849 170.0
C 3 233 149912 712.38 883 889 209.2
C 14 238 143397 681.23 883 889 209.2
C 2 114 16578 75.0 883 889 209.2
D 8 195 582039 2751.03 890 868 211.3
D 2 250 123063 578.42 890 868 211.3
D 12 233 56313 262.45 890 868 211.3

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