ASTROSAT CZTI

Data Quality Report

Orbit 13520

Creation date: 2024-06-27T16:42:00.970857
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_020T01_9000001990_13520cztM0_level2.evt modeM0/AS1T02_020T01_9000001990_13520cztM0_level2_quad_clean.evt
Size (bytes)488,373,12066,830,400
Size465.7 MB 63.7 MB
Events in quadrant A3,275,902402,313
Events in quadrant B3,995,425415,335
Events in quadrant C3,730,428386,848
Events in quadrant D3,353,469371,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135442
B0157681
C0150041
D0139901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64121061.653150%
B64122764.304429%
C6412861.341235%
D6412811.263256%

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 7584 6413 0 0 0.00% 0.00%
B 7584 6413 136 136 1.79% 2.12%
C 7584 6413 2 2 0.03% 0.03%
D 7584 6413 5 5 0.07% 0.08%

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 1 162 24799 141.37 839 822 169.6
A 1 178 8407 44.72 839 822 169.6
A 1 161 7502 39.39 839 822 169.6
B 3 64 550830 3520.06 832 815 156.3
B 0 189 73291 463.84 832 815 156.3
B 4 142 39422 247.08 832 815 156.3
C 3 233 605233 3307.41 800 805 182.7
C 13 61 5847 27.59 800 805 182.7
C 0 207 3446 14.45 800 805 182.7
D 8 195 223956 1165.2 804 781 191.5
D 13 104 68780 355.02 804 781 191.5
D 2 234 23681 119.56 804 781 191.5

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