ASTROSAT CZTI

Data Quality Report

Orbit 20210510_A10_053T17_9000004366_level2

Creation date: 2021-05-17T11:58:13.760159
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_053T17_9000004366cztM0_level2_bc.evt modeM0/AS1A10_053T17_9000004366cztM0_level2_quad_clean.evt
Size (bytes)2,408,757,120679,472,640
Size2.2 GB 648.0 MB
Events in quadrant A13,173,6264,361,620
Events in quadrant B25,153,0004,397,781
Events in quadrant C17,682,9134,162,336
Events in quadrant D13,509,8774,197,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01124560
B01528930
C01364760
D01107890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010300
B010300
C010300
D010300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5043610482.077881%
B504369481.879610%
C5043624204.798160%
D504366141.217384%

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 60862 50426 138 138 0.23% 0.27%
B 60862 50427 4 4 0.01% 0.01%
C 60862 50428 21 21 0.03% 0.04%
D 60862 50430 92 92 0.15% 0.18%

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 1305344 2104.67 2914 2876 618.8
A 12 96 361778 579.95 2914 2876 618.8
A 8 192 109416 172.16 2914 2876 618.8
B 6 159 13763995 25187.06 2939 2883 546.4
B 0 190 71593 125.76 2939 2883 546.4
B 0 230 25279 40.99 2939 2883 546.4
C 3 233 6905487 10759.44 2758 2759 641.6
C 2 114 94808 143.48 2758 2759 641.6
C 0 10 68797 102.93 2758 2759 641.6
D 8 195 1201811 1819.5 2838 2772 659.0
D 2 250 410039 618.01 2838 2772 659.0
D 13 168 354880 534.31 2838 2772 659.0

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