ASTROSAT CZTI

Data Quality Report

Orbit 24128

Creation date: 2024-06-27T19:02:25.604421
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/AS1A07_069T01_9000003570_24128cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24128cztM0_level2_quad_clean.evt
Size (bytes)496,180,80067,714,560
Size473.2 MB 64.6 MB
Events in quadrant A3,620,850411,650
Events in quadrant B3,693,238419,944
Events in quadrant C3,693,573389,123
Events in quadrant D3,582,307380,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145682
B0148522
C0147923
D0144412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6443791.226137%
B6443951.474468%
C64421362.111146%
D6442661.024527%

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 7718 6443 3 3 0.04% 0.05%
B 7718 6443 2 2 0.03% 0.03%
C 7717 6442 15 15 0.19% 0.23%
D 7717 6443 16 16 0.21% 0.25%

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 6 16 40387 215.6 925 912 183.1
A 3 1 15584 80.14 925 912 183.1
A 13 254 10547 52.62 925 912 183.1
B 12 111 19799 109.94 924 905 171.9
B 10 249 18748 103.83 924 905 171.9
B 11 111 17630 97.32 924 905 171.9
C 2 16 141825 707.48 864 874 199.2
C 14 238 139567 696.15 864 874 199.2
C 10 91 37173 182.2 864 874 199.2
D 8 195 139524 656.17 872 850 211.3
D 1 52 59489 277.47 872 850 211.3
D 2 234 26575 121.72 872 850 211.3

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