ASTROSAT CZTI

Data Quality Report

Orbit 18183

Creation date: 2024-06-27T17:46:24.995253
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/AS1A05_160T02_9000002710_18183cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18183cztM0_level2_quad_clean.evt
Size (bytes)520,306,56078,456,960
Size496.2 MB 74.8 MB
Events in quadrant A3,540,752475,328
Events in quadrant B3,703,450478,038
Events in quadrant C4,050,659464,444
Events in quadrant D3,976,432459,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149852
B0154282
C0165252
D0164792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7152971.356264%
B71521301.817673%
C71522173.034116%
D71521652.307047%

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 7722 7153 2 2 0.03% 0.03%
B 7722 7153 18 18 0.23% 0.25%
C 7722 7153 54 54 0.70% 0.75%
D 7722 7153 69 69 0.89% 0.96%

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 15 174 40199 215.35 901 881 182.6
A 4 2 33628 179.36 901 881 182.6
A 0 226 7974 38.85 901 881 182.6
B 7 220 129564 747.53 896 873 172.2
B 12 111 20038 111.32 896 873 172.2
B 0 189 17757 98.07 896 873 172.2
C 4 254 562590 2786.24 858 863 201.6
C 14 238 135094 665.8 858 863 201.6
C 13 61 6146 26.2 858 863 201.6
D 7 238 291463 1342.98 878 852 216.4
D 10 70 123843 568.37 878 852 216.4
D 1 52 50862 231.11 878 852 216.4

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