ASTROSAT CZTI

Data Quality Report

Orbit 34703

Creation date: 2022-03-04T10:42:29.943065
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_069T01_9000004972_34703cztM0_level2.evt modeM0/AS1A11_069T01_9000004972_34703cztM0_level2_quad_clean.evt
Size (bytes)640,166,40083,592,000
Size610.5 MB 79.7 MB
Events in quadrant A7,141,119515,686
Events in quadrant B4,098,316545,769
Events in quadrant C3,049,384543,670
Events in quadrant D4,694,901508,195

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254563
B0159732
C0125422
D0179872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597995115.905670%
B59794447.425991%
C5979470.786085%
D5979891.488543%

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 7263 5980 790 790 10.88% 13.21%
B 7263 5980 331 331 4.56% 5.54%
C 7263 5980 21 21 0.29% 0.35%
D 7263 5980 67 67 0.92% 1.12%

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 4252675 31792.34 664 652 133.7
A 7 48 191217 1424.85 664 652 133.7
A 10 83 48491 357.69 664 652 133.7
B 0 182 870493 6757.07 666 646 128.7
B 5 172 378316 2933.78 666 646 128.7
B 0 197 67872 522.22 666 646 128.7
C 15 214 255924 1634.13 672 677 156.2
C 0 10 113491 722.25 672 677 156.2
C 14 67 48614 306.9 672 677 156.2
D 8 195 1364914 8246.05 672 652 165.4
D 10 199 149565 900.08 672 652 165.4
D 1 52 105704 634.97 672 652 165.4

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