ASTROSAT CZTI

Data Quality Report

Orbit 20477

Creation date: 2024-06-27T18:15:50.957844
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/AS1A05_208T03_9000003026_20477cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20477cztM0_level2_quad_clean.evt
Size (bytes)474,094,08083,473,920
Size452.1 MB 79.6 MB
Events in quadrant A3,275,847539,976
Events in quadrant B3,291,415545,622
Events in quadrant C2,876,124525,939
Events in quadrant D4,508,125497,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136901
B0138281
C0124561
D0174802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5988901.503006%
B5988611.018704%
C5988540.901804%
D59883375.627923%

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 7093 5988 71 71 1.00% 1.19%
B 7093 5988 17 17 0.24% 0.28%
C 7093 5988 1 1 0.01% 0.02%
D 7093 5988 310 310 4.37% 5.18%

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 5 16 357448 2465.43 716 701 144.7
A 9 143 145992 1004.09 716 701 144.7
A 13 254 8772 55.78 716 701 144.7
B 0 189 216066 1574.74 720 704 136.8
B 0 197 56761 409.89 720 704 136.8
B 0 190 47897 345.08 720 704 136.8
C 14 238 107873 663.65 695 699 161.5
C 0 207 20896 125.06 695 699 161.5
C 3 9 14727 86.86 695 699 161.5
D 1 52 473621 2827.59 693 674 167.3
D 7 238 352959 2106.19 693 674 167.3
D 5 222 331710 1979.15 693 674 167.3

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