ASTROSAT CZTI

Data Quality Report

Orbit 06935

Creation date: 2024-06-27T15:13:23.623559
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/AS1A02_103T01_9000000950_06935cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06935cztM0_level2_quad_clean.evt
Size (bytes)812,998,08069,831,360
Size775.3 MB 66.6 MB
Events in quadrant A3,056,416486,477
Events in quadrant B3,796,806488,410
Events in quadrant C13,633,727218,610
Events in quadrant D3,700,719471,852

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133322
B0156281
C0448961
D0153301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415781.215900%
B64151652.572097%
C6415484075.448168%
D6415841.309431%

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 7390 6416 5 5 0.07% 0.08%
B 7390 6416 16 16 0.22% 0.25%
C 7389 6414 3952 3952 53.48% 61.62%
D 7390 6416 16 16 0.22% 0.25%

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 4 2 20212 120.51 786 769 161.3
A 0 226 7596 42.31 786 769 161.3
A 12 194 7319 40.6 786 769 161.3
B 0 228 632935 4171.75 787 768 151.5
B 0 229 37426 241.91 787 768 151.5
B 4 48 34903 225.26 787 768 151.5
C 9 247 11990086 123720.62 418 419 96.9
C 10 22 3976 36.7 418 419 96.9
C 13 61 3218 28.88 418 419 96.9
D 2 136 363620 1911.64 768 743 189.8
D 8 195 221096 1160.82 768 743 189.8
D 2 152 91177 476.41 768 743 189.8

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