ASTROSAT CZTI

Data Quality Report

Orbit 09701

Creation date: 2024-06-27T15:49:48.752128
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/AS1A03_084T01_9000001382_09701cztM0_level2.evt modeM0/AS1A03_084T01_9000001382_09701cztM0_level2_quad_clean.evt
Size (bytes)493,732,80087,016,320
Size470.9 MB 83.0 MB
Events in quadrant A3,500,411546,494
Events in quadrant B3,392,369557,202
Events in quadrant C4,134,040523,968
Events in quadrant D3,458,715528,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145912
B0144441
C0169791
D0148651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68721642.386496%
B68721712.488359%
C68724055.893481%
D68721592.313737%

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 7277 6874 7 7 0.10% 0.10%
B 7277 6874 3 3 0.04% 0.04%
C 7277 6874 256 256 3.52% 3.72%
D 7277 6874 18 18 0.25% 0.26%

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 1 162 111711 653.82 830 811 169.6
A 15 174 49147 284.97 830 811 169.6
A 1 178 41713 241.14 830 811 169.6
B 0 187 40451 248.87 831 811 159.3
B 0 214 37385 229.62 831 811 159.3
B 4 173 32743 200.48 831 811 159.3
C 14 234 1043898 5636.25 790 792 185.1
C 13 61 5825 27.19 790 792 185.1
C 9 237 4559 20.35 790 792 185.1
D 1 52 159602 815.0 801 781 194.9
D 12 233 83648 425.24 801 781 194.9
D 13 104 53449 270.27 801 781 194.9

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