ASTROSAT CZTI

Data Quality Report

Orbit 31979

Creation date: 2024-06-27T20:34:47.991714
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/AS1A10_058T12_9000004674_31979cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31979cztM0_level2_quad_clean.evt
Size (bytes)312,402,24041,474,880
Size297.9 MB 39.6 MB
Events in quadrant A1,850,187255,161
Events in quadrant B2,909,943252,720
Events in quadrant C2,045,514246,204
Events in quadrant D2,408,369244,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076161
B0111991
C082571
D096295

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3616561.548673%
B36161464.037611%
C36161895.226770%
D36151313.623790%

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 4136 3616 0 0 0.00% 0.00%
B 4136 3616 17 17 0.41% 0.47%
C 4136 3616 10 10 0.24% 0.28%
D 4135 3615 69 69 1.67% 1.91%

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 13 254 6500 61.37 478 466 98.3
A 14 238 5058 46.7 478 466 98.3
A 3 137 4933 45.43 478 466 98.3
B 6 159 959523 10417.07 465 453 92.1
B 10 245 86205 931.41 465 453 92.1
B 0 190 11420 119.12 465 453 92.1
C 0 10 126099 1182.22 443 445 106.3
C 14 238 111496 1044.83 443 445 106.3
C 14 254 55489 517.88 443 445 106.3
D 8 195 364857 3353.95 453 439 108.7
D 13 249 129071 1183.87 453 439 108.7
D 12 218 77685 710.94 453 439 108.7

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