ASTROSAT CZTI

Data Quality Report

Orbit 10900

Creation date: 2024-06-27T16:05:24.221043
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/AS1A04_055T02_9000001576_10900cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10900cztM0_level2_quad_clean.evt
Size (bytes)555,278,40088,839,360
Size529.6 MB 84.7 MB
Events in quadrant A4,738,408571,717
Events in quadrant B5,362,201557,549
Events in quadrant C2,787,670584,304
Events in quadrant D3,517,467553,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181022
B0198751
C0124991
D0145561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60545899.729105%
B605484613.974232%
C6054520.858936%
D60541712.824579%

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 7199 6054 354 354 4.92% 5.85%
B 7199 6055 561 561 7.79% 9.27%
C 7199 6055 2 2 0.03% 0.03%
D 7199 6055 60 60 0.83% 0.99%

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 1914319 13055.91 720 708 146.6
A 13 14 15532 101.14 720 708 146.6
A 8 6 9649 61.0 720 708 146.6
B 4 239 2155413 15895.31 713 698 135.6
B 10 245 258114 1898.96 713 698 135.6
B 0 231 54304 395.45 713 698 135.6
C 14 234 7889 43.89 710 714 163.5
C 13 61 5347 28.34 710 714 163.5
C 8 222 5004 26.24 710 714 163.5
D 5 222 306664 1776.76 709 690 172.2
D 10 199 150916 872.35 709 690 172.2
D 1 52 62997 361.81 709 690 172.2

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