ASTROSAT CZTI

Data Quality Report

Orbit 06941

Creation date: 2024-06-27T15:13:27.661992
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_06941cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06941cztM0_level2_quad_clean.evt
Size (bytes)493,416,00059,512,320
Size470.6 MB 56.8 MB
Events in quadrant A2,452,786371,814
Events in quadrant B2,678,837374,902
Events in quadrant C6,042,141338,156
Events in quadrant D3,417,221352,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108312
B0114651
C0214851
D0137491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5191460.886149%
B5191971.868619%
C5191113921.941822%
D5191510.982470%

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 5381 5192 4 4 0.07% 0.08%
B 5381 5192 26 26 0.48% 0.50%
C 5381 5192 974 974 18.10% 18.76%
D 5381 5192 8 8 0.15% 0.15%

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 18548 137.75 630 615 130.2
A 0 226 6064 41.86 630 615 130.2
A 12 194 5897 40.57 630 615 130.2
B 0 228 93831 745.95 633 617 125.0
B 0 219 54960 434.88 633 617 125.0
B 4 48 48403 382.41 633 617 125.0
C 9 247 3794301 28442.89 568 572 133.4
C 7 247 17938 130.2 568 572 133.4
C 8 128 4873 32.25 568 572 133.4
D 8 195 446486 2931.63 612 593 152.1
D 1 20 390830 2565.71 612 593 152.1
D 2 136 83721 546.55 612 593 152.1

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