ASTROSAT CZTI

Data Quality Report

Orbit 20190710_A05_160T02_9000003022_level2

Creation date: 2019-07-30T11:19:29.355587
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/AS1A05_160T02_9000003022cztM0_level2_bc.evt modeM0/AS1A05_160T02_9000003022cztM0_level2_quad_clean.evt
Size (bytes)2,197,500,480686,191,680
Size2.0 GB 654.4 MB
Events in quadrant A13,181,0814,353,256
Events in quadrant B14,950,4234,407,966
Events in quadrant C12,790,2834,174,832
Events in quadrant D21,731,2643,923,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011600
B011620
C011620
D011620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01227560
B01304230
C01222100
D01542260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A571979981.744847%
B5719212692.218842%
C5721010641.859815%
D5720030275.291958%

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 67576 57235 21 21 0.03% 0.04%
B 67551 57260 12 12 0.02% 0.02%
C 67590 57271 23 23 0.03% 0.04%
D 67548 57268 477 477 0.71% 0.83%

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 472180 698.77 3091 3038 671.4
A 6 240 261813 385.44 3091 3038 671.4
A 15 222 244941 360.31 3091 3038 671.4
B 0 189 773607 1314.25 3137 3064 586.3
B 7 220 470351 797.01 3137 3064 586.3
B 0 197 388425 657.28 3137 3064 586.3
C 9 221 734663 1053.98 2974 2964 694.2
C 3 233 545393 781.35 2974 2964 694.2
C 9 54 35111 46.31 2974 2964 694.2
D 1 52 2791360 4057.81 2966 2867 687.2
D 15 0 2038006 2961.53 2966 2867 687.2
D 12 218 1701970 2472.53 2966 2867 687.2

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