ASTROSAT CZTI

Data Quality Report

Orbit 20191025_A07_134T01_9000003256_level2

Creation date: 2019-10-26T18:24:36.655514
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_134T01_9000003256cztM0_level2_bc.evt modeM0/AS1A07_134T01_9000003256cztM0_level2_quad_clean.evt
Size (bytes)2,218,991,040679,106,880
Size2.1 GB 647.6 MB
Events in quadrant A11,340,5754,321,036
Events in quadrant B12,784,2394,367,968
Events in quadrant C10,987,5294,190,052
Events in quadrant D28,351,5213,925,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011200
C011200
D011200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01135240
B01189050
C01142190
D01711660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A548633720.678053%
B548637841.429014%
C548636831.244919%
D5486348238.790988%

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 62068 54858 0 0 0.00% 0.00%
B 62068 54857 47 47 0.08% 0.09%
C 62068 54856 0 0 0.00% 0.00%
D 62068 54854 1787 1787 2.88% 3.26%

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 140297 217.98 2899 2842 630.6
A 13 254 81528 124.78 2899 2842 630.6
A 0 226 18350 24.59 2899 2842 630.6
B 3 64 956322 1742.42 2914 2840 547.2
B 0 197 200543 361.29 2914 2840 547.2
B 0 230 196948 354.72 2914 2840 547.2
C 10 22 231143 350.35 2782 2765 651.9
C 8 128 25866 35.44 2782 2765 651.9
C 13 61 16092 20.44 2782 2765 651.9
D 1 52 12871842 20184.87 2757 2663 637.6
D 11 176 3603299 5647.48 2757 2663 637.6
D 10 1 345165 537.2 2757 2663 637.6

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