ASTROSAT CZTI

Data Quality Report

Orbit 15998

Creation date: 2024-06-27T17:16:20.250590
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/AS1T02_090T01_9000002360_15998cztM0_level2.evt modeM0/AS1T02_090T01_9000002360_15998cztM0_level2_quad_clean.evt
Size (bytes)522,123,84082,823,040
Size497.9 MB 79.0 MB
Events in quadrant A3,832,922501,872
Events in quadrant B3,909,996507,677
Events in quadrant C3,787,499488,858
Events in quadrant D3,765,542480,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163173
B0164642
C0160692
D0165232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7608911.196109%
B76081381.813880%
C76081281.682440%
D7608550.722923%

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 8684 7611 26 26 0.30% 0.34%
B 8684 7611 9 9 0.10% 0.12%
C 8684 7610 2 2 0.02% 0.03%
D 8684 7611 16 16 0.18% 0.21%

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 13 210 86103 446.15 932 912 190.9
A 15 69 59723 308.0 932 912 190.9
A 15 239 51917 267.12 932 912 190.9
B 7 220 57336 315.37 937 916 178.9
B 0 229 46337 253.89 937 916 178.9
B 15 222 40355 220.45 937 916 178.9
C 14 238 137093 640.99 905 911 212.5
C 3 233 74974 348.61 905 911 212.5
C 0 207 19580 87.87 905 911 212.5
D 2 152 75476 332.74 913 886 224.2
D 4 239 57789 253.84 913 886 224.2
D 10 70 52742 231.33 913 886 224.2

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