ASTROSAT CZTI

Data Quality Report

Orbit 06438

Creation date: 2024-06-27T15:07:13.952901
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/AS1A02_191T01_9000000854_06438cztM0_level2.evt modeM0/AS1A02_191T01_9000000854_06438cztM0_level2_quad_clean.evt
Size (bytes)413,481,60099,472,320
Size394.3 MB 94.9 MB
Events in quadrant A2,934,193641,497
Events in quadrant B3,124,626666,010
Events in quadrant C2,873,949641,487
Events in quadrant D3,146,392609,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132973
B0136442
C0132862
D0140982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520190.291411%
B6520380.582822%
C6520120.184049%
D6520220.337423%

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 7695 6521 0 0 0.00% 0.00%
B 7695 6521 1 1 0.01% 0.02%
C 7695 6521 0 0 0.00% 0.00%
D 7695 6521 9 9 0.12% 0.14%

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 0 226 7275 41.78 760 745 156.3
A 12 194 6908 39.43 760 745 156.3
A 10 133 5347 29.44 760 745 156.3
B 0 228 50226 337.66 771 753 146.5
B 8 3 35916 239.99 771 753 146.5
B 15 204 34488 230.24 771 753 146.5
C 13 61 5847 29.97 735 738 170.5
C 1 16 2385 9.66 735 738 170.5
C 3 202 1883 6.72 735 738 170.5
D 2 152 150234 833.92 729 706 179.3
D 2 216 81923 452.95 729 706 179.3
D 11 241 66885 369.08 729 706 179.3

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