ASTROSAT CZTI

Data Quality Report

Orbit 31830

Creation date: 2024-06-27T20:33:15.592059
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_109T01_9000004646_31830cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31830cztM0_level2_quad_clean.evt
Size (bytes)629,239,680116,971,200
Size600.1 MB 111.6 MB
Events in quadrant A3,635,311812,883
Events in quadrant B5,576,419794,628
Events in quadrant C4,694,671754,769
Events in quadrant D4,727,295743,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149701
B0206811
C0187701
D0185712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62611101.756908%
B62612073.306181%
C62613926.260981%
D62611292.060374%

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 7561 6262 0 0 0.00% 0.00%
B 7561 6262 23 23 0.30% 0.37%
C 7561 6262 83 83 1.10% 1.33%
D 7561 6262 47 47 0.62% 0.75%

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 13 254 10850 53.85 942 931 184.2
A 3 137 8468 40.92 942 931 184.2
A 0 226 8089 38.86 942 931 184.2
B 6 159 1611089 9546.74 905 887 168.7
B 10 245 376022 2224.14 905 887 168.7
B 0 183 26800 153.64 905 887 168.7
C 3 233 657617 3280.4 872 884 200.2
C 0 10 432612 2156.5 872 884 200.2
C 14 238 160289 796.23 872 884 200.2
D 8 195 1099827 5238.74 901 886 209.8
D 12 233 168455 798.81 901 886 209.8
D 2 250 44834 209.5 901 886 209.8

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