ASTROSAT CZTI

Data Quality Report

Orbit 35243

Creation date: 2022-04-05T10:35:27.956249
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/AS1C07_004T01_9000005052_35243cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35243cztM0_level2_quad_clean.evt
Size (bytes)603,230,40054,054,720
Size575.3 MB 51.6 MB
Events in quadrant A2,668,673340,662
Events in quadrant B6,492,322291,099
Events in quadrant C3,105,268346,174
Events in quadrant D5,633,758276,278

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112913
B0230562
C0123112
D0205792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5448110.201909%
B5448130623.972100%
C5448941.725404%
D544878614.427313%

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 7152 5449 4 4 0.06% 0.07%
B 7152 5449 850 850 11.88% 15.60%
C 7152 5449 55 55 0.77% 1.01%
D 7152 5449 584 584 8.17% 10.72%

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 10 83 97325 746.82 647 635 129.5
A 13 6 22360 167.8 647 635 129.5
A 9 143 21650 162.32 647 635 129.5
B 5 236 3697094 32514.94 592 576 113.7
B 5 172 392210 3444.85 592 576 113.7
B 0 183 25527 219.47 592 576 113.7
C 0 10 366832 2514.08 626 630 145.7
C 15 214 230102 1575.39 626 630 145.7
C 15 208 42972 290.69 626 630 145.7
D 7 80 1632822 11440.05 582 565 142.7
D 8 195 828160 5800.39 582 565 142.7
D 1 47 320437 2241.9 582 565 142.7

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