ASTROSAT CZTI

Data Quality Report

Orbit 35062

Creation date: 2022-03-24T17:41:29.609535
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/AS1A10_057T01_9000005022_35062cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35062cztM0_level2_quad_clean.evt
Size (bytes)100,621,44021,882,240
Size96.0 MB 20.9 MB
Events in quadrant A544,051148,781
Events in quadrant B575,127150,714
Events in quadrant C660,844145,495
Events in quadrant D1,188,461132,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023551
B024091
C025831
D043321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112140.356824%
B112160.535236%
C1121312.765388%
D1121786.958073%

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 1121 1121 1 1 0.09% 0.09%
B 1121 1121 7 7 0.62% 0.62%
C 1121 1121 29 29 2.59% 2.59%
D 1121 1121 82 82 7.31% 7.31%

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 10 83 32593 1184.31 127 124 27.4
A 9 143 8077 290.09 127 124 27.4
A 10 228 4430 157.06 127 124 27.4
B 5 200 35925 1350.03 128 124 26.5
B 5 172 15154 566.77 128 124 26.5
B 15 33 9569 356.16 128 124 26.5
C 0 10 105702 3410.93 126 126 31.0
C 15 214 49815 1605.34 126 126 31.0
C 14 67 12172 389.18 126 126 31.0
D 8 195 298806 9517.07 122 119 31.4
D 12 6 105364 3353.42 122 119 31.4
D 12 227 72821 2316.51 122 119 31.4

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