ASTROSAT CZTI

Data Quality Report

Orbit 35875

Creation date: 2022-06-08T20:50:10.091933
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/AS1A11_080T01_9000005146_35875cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35875cztM0_level2_quad_clean.evt
Size (bytes)522,043,200102,274,560
Size497.9 MB 97.5 MB
Events in quadrant A3,651,612691,002
Events in quadrant B3,289,785688,002
Events in quadrant C4,414,470660,796
Events in quadrant D4,054,749645,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146253
B0133652
C0167072
D0162482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5900340.576271%
B5900460.779661%
C59003265.525424%
D5900961.627119%

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 7213 5901 21 21 0.29% 0.36%
B 7213 5901 27 27 0.37% 0.46%
C 7213 5901 330 330 4.58% 5.59%
D 7213 5901 75 75 1.04% 1.27%

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 7 48 602586 4136.02 710 699 145.5
A 10 83 168749 1154.8 710 699 145.5
A 15 169 99528 679.13 710 699 145.5
B 5 172 271732 1992.56 701 683 136.0
B 0 213 90454 659.93 701 683 136.0
B 5 255 77792 566.85 701 683 136.0
C 0 207 1234023 7764.89 678 685 158.8
C 15 214 242436 1522.02 678 685 158.8
C 0 10 197610 1239.81 678 685 158.8
D 8 195 758149 4427.85 686 670 171.1
D 13 249 147141 856.2 686 670 171.1
D 2 250 132775 772.22 686 670 171.1

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