ASTROSAT CZTI

Data Quality Report

Orbit 16105

Creation date: 2024-06-27T17:18:04.048972
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/AS1A04_209T01_9000002378_16105cztM0_level2.evt modeM0/AS1A04_209T01_9000002378_16105cztM0_level2_quad_clean.evt
Size (bytes)448,476,48080,720,640
Size427.7 MB 77.0 MB
Events in quadrant A3,190,417503,995
Events in quadrant B3,303,015509,931
Events in quadrant C3,500,580481,419
Events in quadrant D3,132,898482,253

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136643
B0138572
C0146242
D0137962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6696460.686977%
B6696590.881123%
C66961432.135603%
D6696470.701912%

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 6697 2 2 0.03% 0.03%
B 7722 6697 9 9 0.12% 0.13%
C 7722 6697 62 62 0.80% 0.93%
D 7722 6697 8 8 0.10% 0.12%

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 15 239 11167 61.91 826 809 167.3
A 0 226 7239 38.43 826 809 167.3
A 12 194 6167 32.03 826 809 167.3
B 0 189 62530 389.35 817 797 158.6
B 4 48 23032 140.24 817 797 158.6
B 12 111 18808 113.6 817 797 158.6
C 9 236 344944 1890.85 777 780 182.0
C 14 238 119419 651.8 777 780 182.0
C 13 61 5482 25.83 777 780 182.0
D 13 172 38211 191.67 800 779 195.3
D 13 112 30595 152.67 800 779 195.3
D 2 234 23845 118.11 800 779 195.3

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