ASTROSAT CZTI

Data Quality Report

Orbit 14175

Creation date: 2024-06-27T16:51:18.712424
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/AS1A04_229T01_9000002096_14175cztM0_level2.evt modeM0/AS1A04_229T01_9000002096_14175cztM0_level2_quad_clean.evt
Size (bytes)549,959,040105,482,880
Size524.5 MB 100.6 MB
Events in quadrant A3,612,316679,879
Events in quadrant B4,849,791696,308
Events in quadrant C3,750,486660,881
Events in quadrant D3,930,052631,570

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157432
B0193581
C0158231
D0168771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7563490.647891%
B75633835.064128%
C7563630.833003%
D75631081.428005%

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 7794 7565 0 0 0.00% 0.00%
B 7794 7565 184 184 2.36% 2.43%
C 7794 7565 7 7 0.09% 0.09%
D 7794 7565 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 12 189 36920 191.88 924 903 187.7
A 12 96 11904 58.61 924 903 187.7
A 8 15 8927 42.75 924 903 187.7
B 0 85 595470 3398.81 920 899 174.9
B 10 252 413605 2359.2 920 899 174.9
B 0 219 51734 290.59 920 899 174.9
C 3 233 211488 1013.07 896 901 207.9
C 0 207 37145 174.36 896 901 207.9
C 13 61 6524 27.05 896 901 207.9
D 8 195 153465 707.64 883 862 215.6
D 7 55 138355 637.58 883 862 215.6
D 2 152 95679 439.68 883 862 215.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter