ASTROSAT CZTI

Data Quality Report

Orbit 32016

Creation date: 2024-06-27T20:35:16.478589
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_109T01_9000004678_32016cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32016cztM0_level2_quad_clean.evt
Size (bytes)507,484,80083,439,360
Size484.0 MB 79.6 MB
Events in quadrant A2,973,655549,230
Events in quadrant B4,711,793545,393
Events in quadrant C3,539,488514,240
Events in quadrant D3,739,127500,157

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124391
B0182601
C0142921
D0154461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5978240.401472%
B5978560.936768%
C59781322.208096%
D5978791.321512%

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 7158 5978 0 0 0.00% 0.00%
B 7158 5978 3 3 0.04% 0.05%
C 7158 5978 29 29 0.41% 0.49%
D 7158 5978 52 52 0.73% 0.87%

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 11108 67.38 768 755 153.7
A 13 6 8214 48.55 768 755 153.7
A 3 137 7310 42.66 768 755 153.7
B 6 159 1620242 11274.85 758 741 143.6
B 15 33 54601 374.97 758 741 143.6
B 10 245 19440 130.18 758 741 143.6
C 3 233 378098 2210.73 728 734 170.7
C 0 10 171589 1000.93 728 734 170.7
C 14 238 121621 708.2 728 734 170.7
D 8 195 601610 3444.25 729 712 174.5
D 12 218 173679 991.42 729 712 174.5
D 12 227 136953 780.91 729 712 174.5

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