ASTROSAT CZTI

Data Quality Report

Orbit 09485

Creation date: 2024-06-27T15:46:43.688075
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/AS1A03_005T01_9000001348_09485cztM0_level2.evt modeM0/AS1A03_005T01_9000001348_09485cztM0_level2_quad_clean.evt
Size (bytes)2,534,863,680473,258,880
Size2.4 GB 451.3 MB
Events in quadrant A18,246,9063,028,399
Events in quadrant B15,524,5203,086,440
Events in quadrant C16,261,3623,100,912
Events in quadrant D24,552,6082,894,125

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770801937
B068552327
C071046470
D0964661368

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06704
B06702
C06700
D06702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A319324621.446825%
B325384061.247772%
C325354611.416936%
D3244323037.098604%

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 41482 32109 5 5 0.01% 0.02%
B 41482 32695 3 3 0.01% 0.01%
C 41482 32691 81 81 0.20% 0.25%
D 41482 32648 1791 1791 4.32% 5.49%

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 8 5 2929803 3798.48 3861 3786 770.3
A 1 162 256118 327.57 3861 3786 770.3
A 1 178 81492 100.88 3861 3786 770.3
B 4 173 133559 175.77 3945 3852 737.9
B 12 111 83668 108.16 3945 3852 737.9
B 11 111 67852 86.73 3945 3852 737.9
C 4 254 695893 781.63 3888 3922 885.3
C 9 68 375319 419.52 3888 3922 885.3
C 13 61 28788 28.09 3888 3922 885.3
D 1 52 6124423 6860.94 3752 3682 892.1
D 8 195 2100702 2350.62 3752 3682 892.1
D 7 71 678611 756.55 3752 3682 892.1

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