ASTROSAT CZTI

Data Quality Report

Orbit 33135

Creation date: 2024-06-27T20:45:20.955332
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_096T01_9000004766_33135cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33135cztM0_level2_quad_clean.evt
Size (bytes)496,416,96065,358,720
Size473.4 MB 62.3 MB
Events in quadrant A2,425,499433,211
Events in quadrant B3,531,569432,872
Events in quadrant C2,714,257415,455
Events in quadrant D6,041,974364,632

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099262
B0135191
C0109751
D0212811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4747110.231725%
B47472595.456078%
C4747771.622077%
D474769414.619760%

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 6869 4748 3 3 0.04% 0.06%
B 6869 4748 136 136 1.98% 2.86%
C 6869 4748 63 63 0.92% 1.33%
D 6869 4748 628 628 9.14% 13.23%

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 14 235 31034 249.27 610 600 122.1
A 13 6 18155 143.79 610 600 122.1
A 0 79 17404 137.63 610 600 122.1
B 5 172 567919 5097.33 598 586 111.3
B 0 219 258959 2321.41 598 586 111.3
B 0 189 138563 1239.69 598 586 111.3
C 7 221 169052 1283.11 575 580 131.3
C 0 10 156161 1184.93 575 580 131.3
C 1 241 97571 738.7 575 580 131.3
D 8 195 1378371 9996.94 548 538 137.8
D 2 250 751746 5450.43 548 538 137.8
D 1 47 386374 2799.45 548 538 137.8

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