ASTROSAT CZTI

Data Quality Report

Orbit 31040

Creation date: 2024-06-27T20:22:38.781143
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/AS1A10_071T63_9000004486_31040cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31040cztM0_level2_quad_clean.evt
Size (bytes)621,385,92078,085,440
Size592.6 MB 74.5 MB
Events in quadrant A3,768,624470,265
Events in quadrant B6,104,597466,516
Events in quadrant C3,906,618451,162
Events in quadrant D4,517,789441,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160552
B0237712
C0161642
D0181152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76932453.184713%
B76933744.861562%
C76932783.613675%
D76932032.638763%

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 7853 7693 4 4 0.05% 0.05%
B 7853 7693 4 4 0.05% 0.05%
C 7853 7693 0 0 0.00% 0.00%
D 7853 7693 22 22 0.28% 0.29%

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 13 254 14020 66.0 973 950 198.0
A 6 10 12513 58.39 973 950 198.0
A 3 137 10462 48.03 973 950 198.0
B 6 159 2124500 11221.15 955 928 189.2
B 0 190 117728 617.18 955 928 189.2
B 4 80 32825 168.55 955 928 189.2
C 14 238 148561 664.02 929 932 222.3
C 3 233 72744 323.0 929 932 222.3
C 2 114 18017 76.85 929 932 222.3
D 8 195 723892 3223.54 935 907 224.3
D 2 250 134843 597.17 935 907 224.3
D 12 218 54533 239.1 935 907 224.3

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