ASTROSAT CZTI

Data Quality Report

Orbit 08961

Creation date: 2024-06-27T15:39:27.916212
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/AS1A03_051T01_9000001242_08961cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08961cztM0_level2_quad_clean.evt
Size (bytes)485,507,52091,229,760
Size463.0 MB 87.0 MB
Events in quadrant A3,554,485589,227
Events in quadrant B3,236,369596,748
Events in quadrant C3,672,258567,244
Events in quadrant D3,806,980564,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0221

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014685213
B013734221
C015398220
D015415238

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01322
B01320
C01324
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63871271.988414%
B6371861.349867%
C63842594.057018%
D63691912.998901%

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 7564 6468 55 55 0.73% 0.85%
B 7564 6465 9 9 0.12% 0.14%
C 7564 6463 168 168 2.22% 2.60%
D 7564 6465 72 72 0.95% 1.11%

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 5 16 259422 1618.51 788 771 159.8
A 8 5 241002 1503.25 788 771 159.8
A 13 14 9697 55.85 788 771 159.8
B 6 51 68962 453.61 787 769 150.3
B 5 255 27652 178.82 787 769 150.3
B 0 214 21168 135.69 787 769 150.3
C 4 254 747525 4348.02 748 750 171.8
C 13 61 5717 28.92 748 750 171.8
C 4 253 4976 24.61 748 750 171.8
D 7 9 287725 1454.99 756 736 197.2
D 13 104 244960 1238.18 756 736 197.2
D 8 195 184163 929.95 756 736 197.2

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