ASTROSAT CZTI

Data Quality Report

Orbit 22427

Creation date: 2024-06-27T18:41:16.193014
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/AS1T03_159T01_9000003328_22427cztM0_level2.evt modeM0/AS1T03_159T01_9000003328_22427cztM0_level2_quad_clean.evt
Size (bytes)519,370,56098,058,240
Size495.3 MB 93.5 MB
Events in quadrant A3,612,472616,814
Events in quadrant B4,085,803629,473
Events in quadrant C3,699,195597,992
Events in quadrant D3,810,725591,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158582
B0171372
C0158992
D0165402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76721872.437435%
B76732363.075720%
C76732172.828099%
D76731602.085234%

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 8007 7672 0 0 0.00% 0.00%
B 8008 7673 7 7 0.09% 0.09%
C 8008 7673 0 0 0.00% 0.00%
D 8008 7673 10 10 0.12% 0.13%

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 15 174 15827 79.17 932 909 188.4
A 13 254 10767 52.32 932 909 188.4
A 3 137 8576 40.69 932 909 188.4
B 0 244 376135 2066.46 927 899 181.6
B 4 173 35359 189.77 927 899 181.6
B 12 111 22437 118.61 927 899 181.6
C 14 238 139550 652.17 903 906 212.6
C 9 54 15241 67.43 903 906 212.6
C 8 128 13936 61.29 903 906 212.6
D 12 218 145180 649.29 916 888 222.2
D 2 136 51369 227.16 916 888 222.2
D 13 104 46890 207.0 916 888 222.2

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