ASTROSAT CZTI

Data Quality Report

Orbit 20201210_A10_045T04_9000004066_level2

Creation date: 2021-01-06T23:54:13.743625
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/AS1A10_045T04_9000004066cztM0_level2_bc.evt modeM0/AS1A10_045T04_9000004066cztM0_level2_quad_clean.evt
Size (bytes)6,622,122,2401,954,598,400
Size6.2 GB 1.8 GB
Events in quadrant A32,121,44512,623,680
Events in quadrant B39,502,34112,816,803
Events in quadrant C32,997,54812,240,276
Events in quadrant D85,581,16011,098,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160320
B03434030
C03240260
D05112880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02220
C02220
D02220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030940
B030940
C030940
D030940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15212319451.278571%
B15212238872.555186%
C15212232542.139073%
D1521221825011.996950%

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 198856 152115 10 10 0.01% 0.01%
B 198856 152113 212 212 0.11% 0.14%
C 198856 152115 30 30 0.02% 0.02%
D 198856 152106 5172 5172 2.60% 3.40%

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 238095 131.32 8205 8069 1751.6
A 0 13 164899 89.53 8205 8069 1751.6
A 4 2 108974 57.61 8205 8069 1751.6
B 10 245 5248766 3393.46 8257 8049 1544.4
B 15 32 1271836 818.32 8257 8049 1544.4
B 10 246 521497 332.47 8257 8049 1544.4
C 3 233 1941959 1051.45 7875 7845 1839.5
C 2 16 624094 335.01 7875 7845 1839.5
C 15 208 126195 64.34 7875 7845 1839.5
D 1 52 27728099 15933.15 7556 7309 1739.8
D 7 223 7973675 4578.85 7556 7309 1739.8
D 7 80 6739621 3869.55 7556 7309 1739.8

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