ASTROSAT CZTI

Data Quality Report

Orbit 31059

Creation date: 2024-06-27T20:22:52.854769
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/AS1C06_002T01_9000004490_31059cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31059cztM0_level2_quad_clean.evt
Size (bytes)623,275,200112,302,720
Size594.4 MB 107.1 MB
Events in quadrant A2,850,767786,641
Events in quadrant B5,030,728770,951
Events in quadrant C3,099,307750,087
Events in quadrant D7,492,746676,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124401
B0190883
C0129611
D0265401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5958540.906344%
B59581512.534408%
C59581171.963746%
D595873512.336354%

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 6993 5959 0 0 0.00% 0.00%
B 6993 5959 19 19 0.27% 0.32%
C 6993 5959 6 6 0.09% 0.10%
D 6993 5959 697 697 9.97% 11.70%

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 13 254 11906 75.63 737 723 147.9
A 3 137 7004 42.48 737 723 147.9
A 0 226 6342 38.0 737 723 147.9
B 6 159 1733760 12757.43 720 702 135.8
B 0 183 183476 1345.44 720 702 135.8
B 5 172 67779 493.77 720 702 135.8
C 3 233 128157 774.95 701 705 164.5
C 14 238 112781 681.46 701 705 164.5
C 0 10 58752 352.94 701 705 164.5
D 13 174 2694504 16704.71 676 659 161.3
D 8 195 1454587 9015.91 676 659 161.3
D 12 1 483050 2991.34 676 659 161.3

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