ASTROSAT CZTI

Data Quality Report

Orbit 16416

Creation date: 2024-06-27T17:22:22.567607
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_069T01_9000002424_16416cztM0_level2.evt modeM0/AS1A05_069T01_9000002424_16416cztM0_level2_quad_clean.evt
Size (bytes)463,599,36068,158,080
Size442.1 MB 65.0 MB
Events in quadrant A3,201,477410,476
Events in quadrant B3,647,596414,733
Events in quadrant C3,261,089395,236
Events in quadrant D3,483,609385,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136143
B0148082
C0136632
D0147692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6575520.790875%
B65751622.463878%
C6575731.110266%
D6575671.019011%

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 7616 6577 0 0 0.00% 0.00%
B 7616 6577 37 37 0.49% 0.56%
C 7616 6577 1 1 0.01% 0.02%
D 7616 6577 28 28 0.37% 0.43%

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 15 223 17912 103.24 824 806 165.7
A 15 174 10916 61.02 824 806 165.7
A 0 226 7296 39.17 824 806 165.7
B 4 173 156590 984.68 827 806 158.2
B 15 35 125246 786.56 827 806 158.2
B 0 198 35104 216.79 827 806 158.2
C 14 238 120736 653.61 786 791 183.5
C 7 247 46055 246.65 786 791 183.5
C 3 233 23222 122.23 786 791 183.5
D 1 20 184781 951.57 790 767 193.4
D 12 218 159690 821.82 790 767 193.4
D 10 70 67133 343.19 790 767 193.4

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