ASTROSAT CZTI

Data Quality Report

Orbit 22067

Creation date: 2024-06-27T18:36:08.348039
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/AS1A07_149T01_9000003266_22067cztM0_level2.evt modeM0/AS1A07_149T01_9000003266_22067cztM0_level2_quad_clean.evt
Size (bytes)518,572,800109,324,800
Size494.5 MB 104.3 MB
Events in quadrant A3,282,940723,381
Events in quadrant B3,417,007729,540
Events in quadrant C3,301,931699,631
Events in quadrant D5,221,489664,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144782
B0147552
C0144352
D0205472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7091330.465379%
B7091660.930757%
C7092951.339538%
D70925627.924422%

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 7996 7092 2 2 0.03% 0.03%
B 7996 7093 7 7 0.09% 0.10%
C 7997 7094 0 0 0.00% 0.00%
D 7996 7093 357 357 4.46% 5.03%

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 13 254 10515 56.45 848 829 171.6
A 0 226 7251 37.43 848 829 171.6
A 2 79 7204 37.15 848 829 171.6
B 3 64 41524 251.51 845 822 161.8
B 0 230 30381 182.66 845 822 161.8
B 12 111 19476 115.27 845 822 161.8
C 14 238 129183 674.15 811 815 190.4
C 13 61 5647 25.38 811 815 190.4
C 8 222 5531 24.77 811 815 190.4
D 1 52 555669 2860.59 799 775 194.0
D 5 222 470711 2422.62 799 775 194.0
D 12 32 375319 1930.85 799 775 194.0

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