ASTROSAT CZTI

Data Quality Report

Orbit 22786

Creation date: 2024-06-27T18:45:44.587957
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/AS1T03_168T01_9000003368_22786cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22786cztM0_level2_quad_clean.evt
Size (bytes)500,016,960130,919,040
Size476.9 MB 124.9 MB
Events in quadrant A3,178,110915,727
Events in quadrant B3,304,220917,559
Events in quadrant C3,250,574872,442
Events in quadrant D4,956,391793,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137041
B0139541
C0140592
D0192521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6678711.063193%
B6679731.092978%
C66781342.006589%
D667871710.736748%

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 7423 6679 0 0 0.00% 0.00%
B 7424 6680 5 5 0.07% 0.07%
C 7423 6679 35 35 0.47% 0.52%
D 7423 6677 554 554 7.46% 8.30%

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 10 17 44041 266.95 812 796 162.0
A 13 254 12247 70.69 812 796 162.0
A 0 226 7081 38.8 812 796 162.0
B 0 228 52486 343.56 805 787 150.5
B 0 197 34579 224.56 805 787 150.5
B 0 230 32785 212.64 805 787 150.5
C 10 22 135952 764.39 766 769 176.9
C 14 238 124009 696.86 766 769 176.9
C 13 61 5406 26.22 766 769 176.9
D 1 52 1968309 11301.78 721 699 174.1
D 2 152 171816 982.88 721 699 174.1
D 12 227 32098 180.35 721 699 174.1

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