ASTROSAT CZTI

Data Quality Report

Orbit 16375

Creation date: 2024-06-27T17:21:46.592585
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_069T04_9000002418_16375cztM0_level2.evt modeM0/AS1A05_069T04_9000002418_16375cztM0_level2_quad_clean.evt
Size (bytes)522,270,72093,467,520
Size498.1 MB 89.1 MB
Events in quadrant A3,898,020592,842
Events in quadrant B3,876,858606,324
Events in quadrant C3,651,947578,960
Events in quadrant D3,907,713557,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161511
B0159010
C0152190
D0163210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71072643.714648%
B71072793.925707%
C71072473.475447%
D71072633.700577%

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 7108 7108 19 19 0.27% 0.27%
B 7108 7108 38 38 0.53% 0.53%
C 7108 7108 2 2 0.03% 0.03%
D 7108 7108 85 85 1.20% 1.20%

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 15 174 517325 2898.39 872 853 178.2
A 3 1 11071 57.34 872 853 178.2
A 9 143 9751 49.93 872 853 178.2
B 10 16 165525 984.87 869 844 167.2
B 15 35 125257 744.05 869 844 167.2
B 4 173 48300 283.81 869 844 167.2
C 3 233 234277 1186.95 835 840 196.7
C 14 238 127138 642.18 835 840 196.7
C 10 169 31887 157.86 835 840 196.7
D 12 218 325166 1545.47 852 827 209.9
D 1 52 233512 1108.74 852 827 209.9
D 12 110 52158 244.59 852 827 209.9

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