ASTROSAT CZTI

Data Quality Report

Orbit 35383

Creation date: 2022-04-16T11:34:27.904485
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/AS1A11_099T01_9000005068_35383cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35383cztM0_level2_quad_clean.evt
Size (bytes)1,889,280604,800
Size1.8 MB 590.6 KB
Events in quadrant A13,9912,815
Events in quadrant B14,6811,137
Events in quadrant C16,0683,353
Events in quadrant D7,726847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113970740732189646
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011631109
B039733922
C012621200
D026352607

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01111
B01212
C01111
D01212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2214.545455%
B10550.000000%
C2700.000000%
D700.000000%

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 173 37 0 0 0.00% 0.00%
B 34 17 1 1 2.94% 5.88%
C 257 49 0 0 0.00% 0.00%
D 55 13 0 0 0.00% 0.00%

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 9 143 2955 1921.38 2 2 1.5
A 10 83 346 223.82 2 2 1.5
A 13 254 39 24.07 2 2 1.5
B 4 251 6993 10213.48 1 1 0.7
B 5 172 1394 2034.81 1 1 0.7
B 5 200 1054 1538.16 1 1 0.7
C 0 10 2558 1481.9 3 3 1.7
C 15 214 1060 613.06 3 3 1.7
C 8 222 67 37.12 3 3 1.7
D 7 80 3280 3689.86 0 0 0.9
D 8 195 149 167.62 0 0 0.9
D 2 153 109 122.62 0 0 0.9

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