ASTROSAT CZTI

Data Quality Report

Orbit 14940

Creation date: 2024-06-27T17:01:33.922585
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/AS1T02_055T01_9000002206_14940cztM0_level2.evt modeM0/AS1T02_055T01_9000002206_14940cztM0_level2_quad_clean.evt
Size (bytes)502,231,68087,966,720
Size479.0 MB 83.9 MB
Events in quadrant A3,394,381557,748
Events in quadrant B4,280,888549,644
Events in quadrant C3,369,891535,478
Events in quadrant D3,693,437537,139

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143652
B0170481
C0142921
D0156721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69411141.642415%
B69412723.918744%
C6941921.325457%
D69412333.356865%

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 7767 6943 0 0 0.00% 0.00%
B 7767 6943 108 108 1.39% 1.56%
C 7767 6943 6 6 0.08% 0.09%
D 7767 6942 120 120 1.54% 1.73%

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 12 189 89107 516.76 842 824 170.8
A 13 252 20112 112.9 842 824 170.8
A 3 1 16788 93.44 842 824 170.8
B 10 16 857069 5407.4 825 803 158.4
B 0 219 78530 490.85 825 803 158.4
B 0 189 67470 421.01 825 803 158.4
C 3 233 195845 1060.79 802 803 183.9
C 9 236 38445 204.73 802 803 183.9
C 10 22 6311 29.96 802 803 183.9
D 10 70 394019 2059.85 805 784 190.9
D 7 254 124651 648.84 805 784 190.9
D 13 249 74953 388.51 805 784 190.9

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