ASTROSAT CZTI

Data Quality Report

Orbit 10990

Creation date: 2024-06-27T16:06:38.432921
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/AS1G08_027T06_9000001594_10990cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10990cztM0_level2_quad_clean.evt
Size (bytes)587,903,040100,198,080
Size560.7 MB 95.6 MB
Events in quadrant A3,844,342642,073
Events in quadrant B5,213,977640,942
Events in quadrant C4,110,695633,722
Events in quadrant D4,137,053605,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163932
B0203191
C0173401
D0172811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73541592.162089%
B73544405.983138%
C73541552.107696%
D7354640.870275%

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 7424 7355 58 58 0.78% 0.79%
B 7424 7355 240 240 3.23% 3.26%
C 7424 7355 119 119 1.60% 1.62%
D 7424 7355 50 50 0.67% 0.68%

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 8 5 276799 1525.84 880 863 180.8
A 15 223 107728 590.93 880 863 180.8
A 15 239 36577 197.49 880 863 180.8
B 4 239 1541175 9212.73 872 851 167.2
B 3 189 67562 399.0 872 851 167.2
B 15 204 66297 391.43 872 851 167.2
C 4 254 795984 4038.41 843 848 196.9
C 9 54 13941 66.5 843 848 196.9
C 13 61 6483 28.62 843 848 196.9
D 5 222 305451 1474.29 848 822 206.6
D 1 52 187107 901.55 848 822 206.6
D 8 195 177872 856.85 848 822 206.6

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