ASTROSAT CZTI

Data Quality Report

Orbit 16525

Creation date: 2024-06-27T17:23:56.650786
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_174T01_9000002440_16525cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16525cztM0_level2_quad_clean.evt
Size (bytes)479,856,96097,934,400
Size457.6 MB 93.4 MB
Events in quadrant A3,578,966630,997
Events in quadrant B3,598,916644,002
Events in quadrant C3,676,884610,168
Events in quadrant D3,213,239604,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150803
B0151722
C0152252
D0143472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68411241.812600%
B68411171.710276%
C68411021.491010%
D6841711.037860%

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 8812 6842 27 27 0.31% 0.39%
B 8812 6842 10 10 0.11% 0.15%
C 8812 6842 0 0 0.00% 0.00%
D 8812 6843 13 13 0.15% 0.19%

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 15 174 291180 1692.58 850 832 171.5
A 15 223 15578 85.96 850 832 171.5
A 15 239 7788 40.55 850 832 171.5
B 10 16 95563 575.98 847 826 164.5
B 4 173 47314 282.64 847 826 164.5
B 0 198 44880 267.84 847 826 164.5
C 3 233 385815 2040.89 804 808 188.6
C 14 238 124241 654.31 804 808 188.6
C 7 247 35604 184.45 804 808 188.6
D 15 0 99400 496.36 819 796 198.7
D 2 234 28355 138.73 819 796 198.7
D 14 226 7917 35.85 819 796 198.7

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