ASTROSAT CZTI

Data Quality Report

Orbit 31646

Creation date: 2024-06-27T20:31:07.341052
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/AS1T04_035T01_9000004622_31646cztM0_level2.evt modeM0/AS1T04_035T01_9000004622_31646cztM0_level2_quad_clean.evt
Size (bytes)774,794,88074,203,200
Size738.9 MB 70.8 MB
Events in quadrant A7,610,625393,367
Events in quadrant B5,922,271466,451
Events in quadrant C3,806,241454,505
Events in quadrant D5,643,462434,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274441
B0228891
C0156821
D0219571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7150167323.398601%
B71511902.656971%
C71511271.775975%
D71511381.929800%

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 7665 7151 1178 1178 15.37% 16.47%
B 7666 7152 30 30 0.39% 0.42%
C 7666 7152 10 10 0.13% 0.14%
D 7666 7152 57 57 0.74% 0.80%

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 0 13 4333778 28476.56 759 744 152.2
A 12 96 341101 2236.82 759 744 152.2
A 13 254 11784 72.55 759 744 152.2
B 6 159 2029513 12504.1 847 825 162.2
B 10 245 382885 2354.88 847 825 162.2
B 0 190 59881 364.0 847 825 162.2
C 10 22 269358 1380.27 822 823 194.6
C 14 238 136775 698.79 822 823 194.6
C 0 10 127673 652.01 822 823 194.6
D 8 195 2193032 11293.72 814 792 194.1
D 13 249 132725 679.67 814 792 194.1
D 11 176 96556 493.34 814 792 194.1

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