ASTROSAT CZTI

Data Quality Report

Orbit 22760

Creation date: 2024-06-27T18:45:20.671967
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/AS1C05_001T01_9000003366_22760cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22760cztM0_level2_quad_clean.evt
Size (bytes)481,438,080136,244,160
Size459.1 MB 129.9 MB
Events in quadrant A3,312,250928,826
Events in quadrant B3,426,940928,590
Events in quadrant C3,340,790887,089
Events in quadrant D4,005,126874,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147681
B0149751
C0148671
D0170751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288310.425357%
B7288410.562569%
C7288540.740944%
D7288751.029089%

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 7703 7289 0 0 0.00% 0.00%
B 7703 7289 1 1 0.01% 0.01%
C 7703 7289 1 1 0.01% 0.01%
D 7703 7289 45 45 0.58% 0.62%

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 13298 71.87 856 837 173.4
A 0 226 7409 37.9 856 837 173.4
A 3 137 7328 37.44 856 837 173.4
B 0 190 28599 171.34 854 835 162.0
B 12 111 18787 110.79 854 835 162.0
B 0 245 17558 103.2 854 835 162.0
C 14 238 128239 671.42 812 813 189.8
C 10 22 43124 222.94 812 813 189.8
C 13 61 5761 26.07 812 813 189.8
D 1 52 291697 1445.78 825 798 201.2
D 12 227 162763 804.97 825 798 201.2
D 2 152 151812 750.54 825 798 201.2

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