ASTROSAT CZTI

Data Quality Report

Orbit 28256

Creation date: 2024-06-27T19:49:42.714072
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_067T01_9000004076_28256cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28256cztM0_level2_quad_clean.evt
Size (bytes)539,326,08092,278,080
Size514.3 MB 88.0 MB
Events in quadrant A3,198,070616,350
Events in quadrant B3,986,117619,161
Events in quadrant C3,695,907582,813
Events in quadrant D5,025,245535,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131750
B0158510
C0149740
D0189680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6321480.759374%
B63211071.692770%
C63201081.708861%
D63215458.622053%

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 7576 6322 0 0 0.00% 0.00%
B 7576 6322 37 37 0.49% 0.59%
C 7575 6321 4 4 0.05% 0.06%
D 7576 6322 486 486 6.41% 7.69%

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 12 96 10601 59.73 826 812 163.9
A 13 254 9955 55.79 826 812 163.9
A 3 137 7798 42.63 826 812 163.9
B 10 245 779750 5075.32 812 792 153.5
B 12 111 18358 114.45 812 792 153.5
B 0 230 17191 106.85 812 792 153.5
C 3 233 306085 1672.16 782 787 182.6
C 1 90 211640 1154.87 782 787 182.6
C 14 238 128267 698.23 782 787 182.6
D 1 52 1629425 9105.99 758 738 178.9
D 8 195 287834 1605.15 758 738 178.9
D 5 222 183389 1021.2 758 738 178.9

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