ASTROSAT CZTI

Data Quality Report

Orbit 03171

Creation date: 2024-06-27T14:25:30.169259
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/AS1G05_218T02_9000000434_03171cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03171cztM0_level2_quad_clean.evt
Size (bytes)454,392,00088,905,600
Size433.3 MB 84.8 MB
Events in quadrant A3,056,353572,368
Events in quadrant B3,363,759578,301
Events in quadrant C3,640,682552,399
Events in quadrant D3,263,841541,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134853
B0142402
C0154162
D0143962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421881.370503%
B64211452.258215%
C64212644.111509%
D64211422.211494%

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 7632 6422 7 7 0.09% 0.11%
B 7632 6421 32 32 0.42% 0.50%
C 7632 6422 188 188 2.46% 2.93%
D 7632 6422 84 84 1.10% 1.31%

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 0 128 57787 372.57 758 741 153.1
A 12 247 31795 202.82 758 741 153.1
A 0 149 28945 184.2 758 741 153.1
B 2 249 176523 1196.62 766 748 146.9
B 4 80 114994 777.75 766 748 146.9
B 15 85 28530 189.13 766 748 146.9
C 1 192 672510 4024.15 717 718 166.9
C 14 223 112508 669.64 717 718 166.9
C 6 80 25104 146.08 717 718 166.9
D 2 136 220161 1259.19 723 701 174.3
D 13 239 74868 425.55 723 701 174.3
D 13 223 72705 413.14 723 701 174.3

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
Veto Counter