ASTROSAT CZTI

Data Quality Report

Orbit 08342

Creation date: 2024-06-27T15:31:21.898250
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/AS1G07_029T01_9000001158_08342cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08342cztM0_level2_quad_clean.evt
Size (bytes)511,885,440105,356,160
Size488.2 MB 100.5 MB
Events in quadrant A3,660,491667,398
Events in quadrant B3,915,491674,028
Events in quadrant C3,712,077663,241
Events in quadrant D3,685,508644,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162812
B0167661
C0164371
D0165181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77801622.082262%
B77801912.455013%
C77801221.568123%
D77801201.542416%

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 7875 7781 0 0 0.00% 0.00%
B 7875 7781 3 3 0.04% 0.04%
C 7875 7781 7 7 0.09% 0.09%
D 7875 7781 10 10 0.13% 0.13%

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 0 226 8805 40.28 952 931 195.5
A 12 194 8588 39.17 952 931 195.5
A 3 137 3855 14.96 952 931 195.5
B 0 214 86183 462.76 949 925 184.2
B 4 80 79108 424.36 949 925 184.2
B 4 81 39618 210.02 949 925 184.2
C 9 54 69851 317.34 928 933 217.2
C 8 128 14074 60.51 928 933 217.2
C 8 112 7173 28.73 928 933 217.2
D 2 14 84078 369.3 927 901 225.2
D 13 105 55934 244.35 927 901 225.2
D 2 234 29084 125.13 927 901 225.2

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