ASTROSAT CZTI

Data Quality Report

Orbit 15724

Creation date: 2024-06-27T17:12:43.571845
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/AS1T02_066T01_9000002324_15724cztM0_level2.evt modeM0/AS1T02_066T01_9000002324_15724cztM0_level2_quad_clean.evt
Size (bytes)445,000,32069,171,840
Size424.4 MB 66.0 MB
Events in quadrant A3,167,199433,707
Events in quadrant B2,851,043441,065
Events in quadrant C3,169,413419,025
Events in quadrant D3,904,612405,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132792
B0120621
C0132441
D0155101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56574177.371398%
B56572464.348595%
C56572935.179424%
D56574628.166873%

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 5833 5659 92 92 1.58% 1.63%
B 5833 5659 1 1 0.02% 0.02%
C 5833 5659 10 10 0.17% 0.18%
D 5833 5659 176 176 3.02% 3.11%

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 15 239 525096 3774.0 678 661 139.0
A 9 143 34893 246.34 678 661 139.0
A 0 226 5995 38.39 678 661 139.0
B 4 173 52852 390.43 690 671 133.7
B 4 216 30791 225.36 690 671 133.7
B 0 189 21631 156.83 690 671 133.7
C 3 233 389717 2473.27 659 664 157.3
C 14 238 99486 628.23 659 664 157.3
C 9 54 57250 359.73 659 664 157.3
D 1 52 1364105 8198.2 659 639 166.3
D 2 234 26560 155.86 659 639 166.3
D 7 223 13754 78.86 659 639 166.3

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