ASTROSAT CZTI

Data Quality Report

Orbit 29862

Creation date: 2024-06-27T20:08:24.615886
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_291T01_9000004278_29862cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29862cztM0_level2_quad_clean.evt
Size (bytes)615,355,20073,670,400
Size586.8 MB 70.3 MB
Events in quadrant A3,703,022466,585
Events in quadrant B5,711,806463,441
Events in quadrant C4,712,743426,436
Events in quadrant D4,076,377427,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151192
B0210232
C0188102
D0163572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63991041.625254%
B63991923.000469%
C63992183.406782%
D63991001.562744%

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 7764 6400 6 6 0.08% 0.09%
B 7764 6400 4 4 0.05% 0.06%
C 7764 6400 10 10 0.13% 0.16%
D 7764 6400 30 30 0.39% 0.47%

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 8 192 26661 138.97 952 939 185.1
A 13 254 12801 64.09 952 939 185.1
A 0 226 8413 40.38 952 939 185.1
B 6 159 1851843 10860.68 934 915 170.4
B 0 190 188620 1101.4 934 915 170.4
B 12 111 19374 108.31 934 915 170.4
C 3 233 1101639 5543.53 877 886 198.6
C 14 238 149058 746.21 877 886 198.6
C 10 22 27246 132.75 877 886 198.6
D 8 195 193718 930.77 895 874 207.2
D 7 80 186085 893.93 895 874 207.2
D 13 153 157601 756.45 895 874 207.2

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