ASTROSAT CZTI

Data Quality Report

Orbit 29764

Creation date: 2024-06-27T20:07:33.618426
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/AS1T03_291T01_9000004278_29764cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29764cztM0_level2_quad_clean.evt
Size (bytes)575,982,720106,156,800
Size549.3 MB 101.2 MB
Events in quadrant A3,359,608700,504
Events in quadrant B6,162,364696,465
Events in quadrant C3,457,510671,719
Events in quadrant D3,981,607650,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145731
B0230662
C0146011
D0165391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7120130.182584%
B71202393.356742%
C7120791.109551%
D7120550.772472%

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 7580 7121 0 0 0.00% 0.00%
B 7580 7120 50 50 0.66% 0.70%
C 7580 7120 0 0 0.00% 0.00%
D 7580 7121 37 37 0.49% 0.52%

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 13 254 13626 72.91 869 851 175.2
A 3 137 8924 46.08 869 851 175.2
A 0 226 7484 37.86 869 851 175.2
B 6 159 2126660 12930.46 861 838 164.4
B 0 229 381614 2316.1 861 838 164.4
B 5 255 250868 1520.83 861 838 164.4
C 14 238 135321 686.88 836 839 195.8
C 7 247 28739 142.5 836 839 195.8
C 2 114 16544 80.21 836 839 195.8
D 8 195 515864 2571.69 837 814 200.3
D 2 250 134779 668.9 837 814 200.3
D 7 80 64399 317.49 837 814 200.3

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