ASTROSAT CZTI

Data Quality Report

Orbit 20210812_A10_059T02_9000004636_level2

Creation date: 2021-08-15T04:59:29.963690
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_059T02_9000004636cztM0_level2_bc.evt modeM0/AS1A10_059T02_9000004636cztM0_level2_quad_clean.evt
Size (bytes)2,509,885,440493,439,040
Size2.3 GB 470.6 MB
Events in quadrant A21,425,1582,776,452
Events in quadrant B19,260,4823,315,801
Events in quadrant C17,476,4753,135,812
Events in quadrant D15,286,6893,126,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01529940
B01184850
C01154430
D01019090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A376531243233.017289%
B3765313713.641144%
C3765336039.568959%
D3765315043.994370%

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 41358 37623 299 299 0.72% 0.79%
B 41358 37655 33 33 0.08% 0.09%
C 41358 37656 170 170 0.41% 0.45%
D 41358 37655 145 145 0.35% 0.39%

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 0 13 15246903 43556.71 1591 1565 350.0
A 13 254 56639 157.35 1591 1565 350.0
A 14 238 15041 38.5 1591 1565 350.0
B 6 159 9993094 26667.82 1942 1893 374.7
B 5 172 619803 1649.28 1942 1893 374.7
B 10 245 520537 1384.33 1942 1893 374.7
C 3 233 5692112 13330.36 1811 1807 426.9
C 0 10 4220888 9883.81 1811 1807 426.9
C 10 22 405492 945.69 1811 1807 426.9
D 8 195 4502905 10205.4 1891 1827 441.0
D 12 218 962827 2178.9 1891 1827 441.0
D 13 249 955152 2161.5 1891 1827 441.0

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