ASTROSAT CZTI

Data Quality Report

Orbit 37130

Creation date: 2024-06-27T21:35:58.066784
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_079T01_9000005284_37130cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37130cztM0_level2_quad_clean.evt
Size (bytes)417,617,28099,840,960
Size398.3 MB 95.2 MB
Events in quadrant A2,980,457685,313
Events in quadrant B3,289,537675,640
Events in quadrant C2,911,456668,480
Events in quadrant D3,117,650634,923

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119553
B0129762
C0116662
D0124552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5130581.130604%
B51301653.216374%
C5130170.331384%
D51301072.085770%

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 7253 5131 38 38 0.52% 0.74%
B 7253 5131 148 148 2.04% 2.88%
C 7253 5131 12 12 0.17% 0.23%
D 7253 5131 87 87 1.20% 1.70%

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 10 83 246534 1874.5 665 655 131.2
A 15 174 134784 1022.56 665 655 131.2
A 9 143 21518 159.05 665 655 131.2
B 5 172 641151 5277.49 640 626 121.4
B 5 200 82248 672.51 640 626 121.4
B 0 230 24980 200.66 640 626 121.4
C 15 214 239055 1617.45 636 642 147.4
C 0 10 115946 782.25 636 642 147.4
C 10 49 50589 338.85 636 642 147.4
D 2 250 234919 1521.02 639 626 154.0
D 12 235 112158 724.06 639 626 154.0
D 13 249 103098 665.24 639 626 154.0

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