ASTROSAT CZTI

Data Quality Report

Orbit 47041

Creation date: 2024-06-27T23:31:05.045401
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/AS1C09_005T01_9000006296_47041cztM0_level2.fits modeM0/AS1C09_005T01_9000006296_47041cztM0_level2_quad_clean.evt
Size (bytes)622,866,24097,315,200
Size594.0 MB 92.8 MB
Events in quadrant A6,093,712694,053
Events in quadrant B3,815,187691,733
Events in quadrant C3,640,330690,143
Events in quadrant D9,022,248434,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224611
B0153321
C0153801
D0311731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62562243.580563%
B62563195.099105%
C62561502.397698%
D6257231336.966597%

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 7336 6257 14 14 0.19% 0.22%
B 7336 6257 167 167 2.28% 2.67%
C 7336 6257 90 90 1.23% 1.44%
D 7337 6258 2000 2000 27.26% 31.96%

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 10 83 3294613 22595.23 703 688 145.8
A 13 248 49911 337.65 703 688 145.8
A 9 191 22159 147.28 703 688 145.8
B 3 112 895948 6683.33 689 667 134.0
B 4 171 65175 481.56 689 667 134.0
B 15 36 39764 291.86 689 667 134.0
C 14 254 917200 5766.9 688 691 158.9
C 1 3 18575 112.53 688 691 158.9
C 12 249 10204 59.86 688 691 158.9
D 1 52 6336049 44053.81 576 558 143.8
D 1 47 121752 842.72 576 558 143.8
D 12 218 115825 801.51 576 558 143.8

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