ASTROSAT CZTI

Data Quality Report

Orbit 03738

Creation date: 2024-06-27T14:33:03.427791
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_248T01_9000000486_03738cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03738cztM0_level2_quad_clean.evt
Size (bytes)513,789,12075,936,960
Size490.0 MB 72.4 MB
Events in quadrant A4,376,185454,831
Events in quadrant B4,302,308463,603
Events in quadrant C2,989,517465,190
Events in quadrant D3,439,795450,849

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174682
B0172531
C0138331
D0151761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66633224.832658%
B66631522.281255%
C6663250.375206%
D6663961.440792%

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 6913 6664 178 178 2.57% 2.67%
B 6913 6664 34 34 0.49% 0.51%
C 6913 6664 1 1 0.01% 0.02%
D 6913 6664 59 59 0.85% 0.89%

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 0 118 554591 3506.85 758 741 157.9
A 13 251 551962 3490.2 758 741 157.9
A 0 128 128140 806.66 758 741 157.9
B 15 204 562233 3669.08 777 757 153.0
B 0 173 425488 2775.49 777 757 153.0
B 14 167 115793 751.73 777 757 153.0
C 2 53 32424 178.27 753 757 177.6
C 12 4 13262 70.4 753 757 177.6
C 13 61 6485 32.25 753 757 177.6
D 9 35 178138 966.35 753 732 183.6
D 2 118 165402 896.98 753 732 183.6
D 14 34 130647 707.66 753 732 183.6

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