ASTROSAT CZTI

Data Quality Report

Orbit 28979

Creation date: 2024-06-27T19:58:45.081085
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_048T03_9000004154_28979cztM0_level2.evt modeM0/AS1A10_048T03_9000004154_28979cztM0_level2_quad_clean.evt
Size (bytes)551,361,600108,910,080
Size525.8 MB 103.9 MB
Events in quadrant A3,410,575736,271
Events in quadrant B3,285,872773,718
Events in quadrant C3,243,403720,287
Events in quadrant D6,344,662641,782

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139142
B0134712
C0132682
D0230182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6112731.194372%
B6112450.736257%
C6112791.292539%
D611288914.545157%

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 7462 6113 47 47 0.63% 0.77%
B 7462 6113 1 1 0.01% 0.02%
C 7462 6113 0 0 0.00% 0.00%
D 7462 6113 690 690 9.25% 11.29%

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 240771 1483.31 814 800 161.8
A 1 113 21183 125.99 814 800 161.8
A 13 254 11137 63.9 814 800 161.8
B 10 245 37513 236.69 825 806 155.1
B 12 111 18637 114.97 825 806 155.1
B 11 111 16742 102.75 825 806 155.1
C 14 238 129622 696.05 788 795 185.1
C 3 233 21045 109.41 788 795 185.1
C 2 114 14460 73.83 788 795 185.1
D 7 80 1918398 10837.56 735 716 176.9
D 8 195 1484797 8387.12 735 716 176.9
D 1 52 96351 540.47 735 716 176.9

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