ASTROSAT CZTI

Data Quality Report

Orbit 27126

Creation date: 2024-06-27T19:36:47.322000
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/AS1T03_244T01_9000003912_27126cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27126cztM0_level2_quad_clean.evt
Size (bytes)586,961,28098,242,560
Size559.8 MB 93.7 MB
Events in quadrant A4,199,622658,616
Events in quadrant B4,352,526659,961
Events in quadrant C3,298,632639,560
Events in quadrant D5,508,526586,891

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166960
B0168400
C0135310
D0205780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61651452.351987%
B61653505.677210%
C6165951.540957%
D616463710.334199%

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 7525 6166 39 39 0.52% 0.63%
B 7525 6166 195 195 2.59% 3.16%
C 7525 6166 1 1 0.01% 0.02%
D 7524 6165 541 541 7.19% 8.78%

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 6 16 673240 4142.11 830 814 162.3
A 14 235 269462 1654.86 830 814 162.3
A 13 248 24730 147.32 830 814 162.3
B 10 245 894590 5950.55 814 795 150.2
B 7 205 135570 897.28 814 795 150.2
B 0 189 42786 279.56 814 795 150.2
C 14 238 130180 696.31 806 814 185.8
C 15 208 20116 103.89 806 814 185.8
C 13 61 5428 24.83 806 814 185.8
D 1 52 1829463 9099.82 768 757 201.0
D 7 38 527240 2619.83 768 757 201.0
D 2 250 132254 654.34 768 757 201.0

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