ASTROSAT CZTI

Data Quality Report

Orbit 34190

Creation date: 2022-01-24T06:01:56.010234
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_047T15_9000004882_34190cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34190cztM0_level2_quad_clean.evt
Size (bytes)479,312,64092,597,760
Size457.1 MB 88.3 MB
Events in quadrant A2,584,512626,217
Events in quadrant B4,166,460627,778
Events in quadrant C3,549,550621,255
Events in quadrant D3,882,659584,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106643
B0158192
C0136072
D0148702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491640.081367%
B49162986.061839%
C49163246.590724%
D4916901.830757%

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 6978 4917 2 2 0.03% 0.04%
B 6978 4917 182 182 2.61% 3.70%
C 6978 4917 237 237 3.40% 4.82%
D 6978 4917 57 57 0.82% 1.16%

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 15 169 134217 1073.19 622 612 124.5
A 10 83 21737 169.69 622 612 124.5
A 13 6 19055 148.15 622 612 124.5
B 5 31 726768 6290.75 612 600 115.4
B 5 172 691787 5987.71 612 600 115.4
B 5 15 244302 2111.17 612 600 115.4
C 14 254 683380 4991.56 595 602 136.8
C 0 10 297049 2167.22 595 602 136.8
C 15 214 220861 1610.24 595 602 136.8
D 8 195 1135391 7381.54 595 584 153.7
D 13 249 108165 699.78 595 584 153.7
D 7 223 61998 399.48 595 584 153.7

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