ASTROSAT CZTI

Data Quality Report

Orbit 08904

Creation date: 2024-06-27T15:38:47.949001
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/AS1A03_092T01_9000001240_08904cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08904cztM0_level2_quad_clean.evt
Size (bytes)517,501,44099,201,600
Size493.5 MB 94.6 MB
Events in quadrant A4,540,676629,898
Events in quadrant B3,588,523645,983
Events in quadrant C3,090,991629,005
Events in quadrant D3,979,589613,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179303
B0153382
C0142442
D0163072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69722293.284567%
B6972640.917958%
C6972100.143431%
D69721331.907631%

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 7853 6973 151 151 1.92% 2.17%
B 7853 6973 34 34 0.43% 0.49%
C 7853 6973 3 3 0.04% 0.04%
D 7853 6973 94 94 1.20% 1.35%

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 5 835542 5013.13 817 802 166.5
A 5 16 455710 2732.0 817 802 166.5
A 15 174 60034 355.72 817 802 166.5
B 10 16 239772 1516.5 825 806 157.6
B 0 214 84071 528.41 825 806 157.6
B 0 219 16488 99.52 825 806 157.6
C 14 234 15588 80.84 789 793 183.0
C 13 61 6016 28.54 789 793 183.0
C 3 202 1939 6.26 789 793 183.0
D 8 195 321988 1536.76 786 766 209.0
D 2 14 241145 1150.0 786 766 209.0
D 1 52 217163 1035.26 786 766 209.0

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