ASTROSAT CZTI

Data Quality Report

Orbit 32660

Creation date: 2024-06-27T20:40:35.283351
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/AS1A10_057T03_9000004722_32660cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32660cztM0_level2_quad_clean.evt
Size (bytes)757,042,56058,777,920
Size722.0 MB 56.1 MB
Events in quadrant A2,956,576358,118
Events in quadrant B5,390,739345,820
Events in quadrant C4,348,265346,491
Events in quadrant D9,833,605316,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124633
B0201692
C0167852
D0331432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5896200.339213%
B58963115.274763%
C58962644.477612%
D5896318954.087517%

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 7360 5897 7 7 0.10% 0.12%
B 7360 5897 194 194 2.64% 3.29%
C 7360 5897 200 200 2.72% 3.39%
D 7360 5897 2995 2995 40.69% 50.79%

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 15 249 80521 567.08 697 683 140.8
A 4 48 43365 303.16 697 683 140.8
A 0 64 30715 213.31 697 683 140.8
B 12 1 859963 6626.46 692 680 129.7
B 0 219 755848 5823.57 692 680 129.7
B 3 43 351286 2703.74 692 680 129.7
C 8 35 555882 3626.89 661 666 153.1
C 8 50 348710 2273.56 661 666 153.1
C 8 147 223910 1458.32 661 666 153.1
D 12 33 4084876 37299.37 451 441 109.5
D 2 250 756503 6904.42 451 441 109.5
D 7 38 624012 5694.5 451 441 109.5

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