ASTROSAT CZTI

Data Quality Report

Orbit 35506

Creation date: 2024-06-27T21:14:22.484194
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/AS1A11_097T22_9000005082_35506cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35506cztM0_level2_quad_clean.evt
Size (bytes)64,218,2407,948,800
Size61.2 MB 7.6 MB
Events in quadrant A523,61246,274
Events in quadrant B431,31148,549
Events in quadrant C523,71342,607
Events in quadrant D413,78544,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020361
B017421
C020251
D017061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A726547.438017%
B72670.964187%
C726547.438017%
D72660.826446%

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 2488 727 47 47 1.89% 6.46%
B 2488 727 1 1 0.04% 0.14%
C 2488 727 30 30 1.21% 4.13%
D 2488 727 5 5 0.20% 0.69%

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 15 169 129491 6450.59 89 87 20.1
A 10 83 42275 2103.01 89 87 20.1
A 10 67 2027 96.71 89 87 20.1
B 5 172 24124 1190.18 95 92 20.2
B 5 236 18911 932.01 95 92 20.2
B 0 190 5958 290.51 95 92 20.2
C 0 10 133236 5908.78 89 89 22.5
C 15 214 32624 1443.83 89 89 22.5
C 14 67 6689 292.89 89 89 22.5
D 13 249 27800 1144.5 93 90 24.2
D 7 80 8576 350.5 93 90 24.2
D 2 153 4637 187.8 93 90 24.2

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