ASTROSAT CZTI

Data Quality Report

Orbit 24688

Creation date: 2024-06-27T19:08:47.076704
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/AS1T03_191T01_9000003618_24688cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24688cztM0_level2_quad_clean.evt
Size (bytes)510,292,800133,992,000
Size486.7 MB 127.8 MB
Events in quadrant A3,278,404916,238
Events in quadrant B3,401,886925,138
Events in quadrant C3,361,713874,054
Events in quadrant D4,932,077850,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143402
B0146383
C0144692
D0193982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7073360.508978%
B7072600.848416%
C7072951.343326%
D70722373.351244%

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 7893 7073 0 0 0.00% 0.00%
B 7892 7072 0 0 0.00% 0.00%
C 7892 7072 5 5 0.06% 0.07%
D 7892 7072 179 179 2.27% 2.53%

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 10802 58.48 848 831 170.5
A 3 137 7709 40.34 848 831 170.5
A 0 226 7272 37.78 848 831 170.5
B 0 189 78792 483.56 844 822 161.2
B 12 111 19562 116.22 844 822 161.2
B 11 111 17767 105.09 844 822 161.2
C 14 238 131117 684.9 813 817 190.2
C 2 16 35669 183.19 813 817 190.2
C 6 96 17711 88.8 813 817 190.2
D 1 52 1121275 5685.81 817 793 197.1
D 7 238 501865 2542.66 817 793 197.1
D 8 195 153813 776.49 817 793 197.1

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