ASTROSAT CZTI

Data Quality Report

Orbit 36232

Creation date: 2022-06-11T04:10:39.075302
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/AS1A11_080T02_9000005176_36232cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36232cztM0_level2_quad_clean.evt
Size (bytes)482,227,20063,547,200
Size459.9 MB 60.6 MB
Events in quadrant A2,653,269409,210
Events in quadrant B3,463,471415,800
Events in quadrant C2,809,578404,066
Events in quadrant D5,342,634347,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108923
B0134892
C0111232
D0191942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4948280.565885%
B49482364.769604%
C49481092.202910%
D494870314.207761%

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 7071 4949 16 16 0.23% 0.32%
B 7071 4949 164 164 2.32% 3.31%
C 7071 4949 79 79 1.12% 1.60%
D 7071 4949 719 719 10.17% 14.53%

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 171523 1411.28 603 591 121.1
A 7 16 106156 871.58 603 591 121.1
A 9 143 29263 236.73 603 591 121.1
B 5 172 729448 6422.88 598 583 113.5
B 0 213 127787 1120.94 598 583 113.5
B 5 255 97429 853.42 598 583 113.5
C 0 10 313801 2308.72 586 592 135.7
C 15 214 205915 1513.47 586 592 135.7
C 13 61 3946 24.72 586 592 135.7
D 12 227 1779370 13198.19 550 533 134.8
D 12 6 710799 5269.86 550 533 134.8
D 2 250 202591 1499.18 550 533 134.8

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