ASTROSAT CZTI

Data Quality Report

Orbit 03681

Creation date: 2024-06-27T14:32:26.047201
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/AS1G05_201T01_9000000478_03681cztM0_level2.evt modeM0/AS1G05_201T01_9000000478_03681cztM0_level2_quad_clean.evt
Size (bytes)512,153,28090,336,960
Size488.4 MB 86.2 MB
Events in quadrant A3,816,497557,122
Events in quadrant B4,329,335553,522
Events in quadrant C3,433,440554,638
Events in quadrant D3,415,690542,010

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167243
B0177592
C0157542
D0159142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7594781.027127%
B7594781.027127%
C7594380.500395%
D7594180.237029%

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 8214 7596 18 18 0.22% 0.24%
B 8214 7596 17 17 0.21% 0.22%
C 8214 7596 9 9 0.11% 0.12%
D 8214 7596 8 8 0.10% 0.11%

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 0 128 132851 736.95 867 844 179.1
A 0 118 107940 597.88 867 844 179.1
A 13 251 98413 544.69 867 844 179.1
B 15 204 406921 2385.53 881 859 170.2
B 3 0 235965 1381.2 881 859 170.2
B 5 172 66410 385.1 881 859 170.2
C 1 16 74422 365.22 850 851 201.4
C 8 128 16840 79.37 850 851 201.4
C 8 112 8543 38.18 850 851 201.4
D 10 187 71094 340.11 847 822 206.6
D 13 223 39491 187.16 847 822 206.6
D 5 233 31404 148.02 847 822 206.6

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
Veto Counter