ASTROSAT CZTI

Data Quality Report

Orbit 15211

Creation date: 2024-06-27T17:05:21.306907
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/AS1T02_071T01_9000002246_15211cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15211cztM0_level2_quad_clean.evt
Size (bytes)503,896,320131,976,000
Size480.6 MB 125.9 MB
Events in quadrant A3,287,078903,138
Events in quadrant B3,841,257915,144
Events in quadrant C4,583,792887,878
Events in quadrant D3,125,489855,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138463
B0155242
C0179912
D0134912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243590.945058%
B62431562.498799%
C62431081.729938%
D6243500.800897%

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 7539 6244 2 2 0.03% 0.03%
B 7539 6244 58 58 0.77% 0.93%
C 7539 6245 22 22 0.29% 0.35%
D 7539 6245 18 18 0.24% 0.29%

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 12 189 114819 717.53 792 778 158.9
A 0 253 105407 658.31 792 778 158.9
A 11 29 13871 82.38 792 778 158.9
B 3 112 314525 2168.98 793 777 144.7
B 3 64 143533 986.89 793 777 144.7
B 0 245 70847 484.4 793 777 144.7
C 3 233 1567403 9171.07 760 764 170.8
C 4 254 45137 259.76 760 764 170.8
C 13 61 5549 28.01 760 764 170.8
D 7 38 93154 505.25 760 738 182.9
D 2 33 28622 152.45 760 738 182.9
D 2 234 23025 121.85 760 738 182.9

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