ASTROSAT CZTI

Data Quality Report

Orbit 07420

Creation date: 2024-06-27T15:19:31.657680
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/AS1G06_138T01_9000001020_07420cztM0_level2.evt modeM0/AS1G06_138T01_9000001020_07420cztM0_level2_quad_clean.evt
Size (bytes)1,053,023,040168,148,800
Size1004.2 MB 160.4 MB
Events in quadrant A6,999,7951,020,077
Events in quadrant B7,263,4771,035,607
Events in quadrant C8,453,4901,019,183
Events in quadrant D8,155,610978,047

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308623
B0312602
C0345382
D0344012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150632121.407422%
B150631931.281285%
C150631741.155148%
D150633822.536015%

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 17443 15064 3 3 0.02% 0.02%
B 17443 15064 5 5 0.03% 0.03%
C 17443 15065 4 4 0.02% 0.03%
D 17443 15065 173 173 0.99% 1.15%

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 13 251 72606 194.93 1790 1750 363.5
A 3 1 18296 45.52 1790 1750 363.5
A 0 226 16916 41.72 1790 1750 363.5
B 0 214 164245 469.35 1803 1759 346.2
B 12 111 35488 97.43 1803 1759 346.2
B 4 81 32289 88.19 1803 1759 346.2
C 9 68 1635029 4024.45 1741 1746 405.8
C 12 4 28520 65.97 1741 1746 405.8
C 13 61 13681 29.41 1741 1746 405.8
D 2 14 452983 1061.9 1732 1679 425.0
D 2 216 398040 932.62 1732 1679 425.0
D 8 195 290396 679.34 1732 1679 425.0

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