ASTROSAT CZTI

Data Quality Report

Orbit 37635

Creation date: 2024-06-27T21:42:28.574430
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_075T01_9000005342_37635cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37635cztM0_level2_quad_clean.evt
Size (bytes)613,451,52080,913,600
Size585.0 MB 77.2 MB
Events in quadrant A7,736,540470,233
Events in quadrant B3,708,873538,104
Events in quadrant C2,868,803560,348
Events in quadrant D3,916,438520,653

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264703
B0143412
C0116052
D0151532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5145190837.084548%
B51454388.513120%
C5145380.738581%
D51453126.064140%

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 7088 5146 1899 1899 26.79% 36.90%
B 7087 5144 406 406 5.73% 7.89%
C 7087 5144 23 23 0.32% 0.45%
D 7087 5144 240 240 3.39% 4.67%

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 15 222 5350404 50004.69 530 520 107.0
A 10 83 250419 2335.77 530 520 107.0
A 9 143 26703 244.73 530 520 107.0
B 5 172 626226 5451.57 613 598 114.8
B 5 184 468139 4074.04 613 598 114.8
B 0 230 38278 328.33 613 598 114.8
C 15 214 240632 1629.2 640 646 147.3
C 0 10 79584 535.89 640 646 147.3
C 14 254 27962 185.44 640 646 147.3
D 2 249 1019501 6710.63 628 613 151.8
D 2 153 140555 921.69 628 613 151.8
D 1 47 133157 872.97 628 613 151.8

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