ASTROSAT CZTI

Data Quality Report

Orbit 12436

Creation date: 2024-06-27T16:27:19.613644
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/AS1A04_141T01_9000001848_12436cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12436cztM0_level2_quad_clean.evt
Size (bytes)728,089,92071,087,040
Size694.4 MB 67.8 MB
Events in quadrant A4,618,598435,471
Events in quadrant B4,210,320436,047
Events in quadrant C3,517,497443,940
Events in quadrant D9,230,567348,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184643
B0169772
C0151832
D0321342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70032102.998715%
B70033815.440525%
C70031502.141939%
D7003187026.702842%

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 7614 7004 8 8 0.11% 0.11%
B 7614 7004 141 141 1.85% 2.01%
C 7614 7004 24 24 0.32% 0.34%
D 7614 7004 1861 1861 24.44% 26.57%

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 15 239 689196 3972.17 849 829 173.3
A 13 251 256909 1477.69 849 829 173.3
A 1 162 143489 823.21 849 829 173.3
B 4 239 749763 4590.51 846 824 163.1
B 3 64 64842 392.39 846 824 163.1
B 11 51 44379 266.96 846 824 163.1
C 15 208 221432 1134.57 840 843 194.4
C 14 234 23261 115.3 840 843 194.4
C 13 61 6171 27.4 840 843 194.4
D 1 52 6124121 33235.41 771 749 184.2
D 13 104 134076 723.65 771 749 184.2
D 2 234 22821 119.8 771 749 184.2

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