ASTROSAT CZTI

Data Quality Report

Orbit 35335

Creation date: 2024-06-27T21:12:10.020578
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/AS1A11_093T01_9000005064_35335cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35335cztM0_level2_quad_clean.evt
Size (bytes)536,126,40072,921,600
Size511.3 MB 69.5 MB
Events in quadrant A2,520,652489,882
Events in quadrant B7,591,562415,108
Events in quadrant C2,840,162487,615
Events in quadrant D2,945,279464,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103913
B0259642
C0111912
D0118772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5003180.359784%
B5003217343.433940%
C5003911.818909%
D5003921.838897%

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 7156 5004 13 13 0.18% 0.26%
B 7156 5004 1826 1826 25.52% 36.49%
C 7156 5004 91 91 1.27% 1.82%
D 7155 5003 87 87 1.22% 1.74%

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 10 83 95471 775.94 610 599 122.3
A 8 192 34771 279.49 610 599 122.3
A 13 6 12989 101.34 610 599 122.3
B 5 236 3151274 34249.26 488 478 92.0
B 5 172 2463291 26770.86 488 478 92.0
B 4 232 25168 268.38 488 478 92.0
C 0 10 336861 2542.77 578 582 132.2
C 15 214 208602 1572.94 578 582 132.2
C 1 23 15926 116.02 578 582 132.2
D 12 233 225733 1605.93 583 566 140.2
D 1 47 116149 824.36 583 566 140.2
D 12 235 103482 734.01 583 566 140.2

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