ASTROSAT CZTI

Data Quality Report

Orbit 03174

Creation date: 2024-06-27T14:25:32.765655
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/AS1G05_218T02_9000000434_03174cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03174cztM0_level2_quad_clean.evt
Size (bytes)576,146,880104,618,880
Size549.5 MB 99.8 MB
Events in quadrant A4,070,908669,310
Events in quadrant B3,976,802683,018
Events in quadrant C3,649,552666,439
Events in quadrant D5,234,965619,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175771
B0171990
C0164420
D0210300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76113204.204441%
B76112002.627776%
C7611951.248193%
D76116047.935882%

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 7611 7611 193 193 2.54% 2.54%
B 7611 7611 14 14 0.18% 0.18%
C 7611 7611 28 28 0.37% 0.37%
D 7610 7610 469 469 6.16% 6.16%

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 0 149 547658 3083.95 863 840 177.3
A 14 249 62124 345.63 863 840 177.3
A 0 226 59065 328.38 863 840 177.3
B 4 80 295779 1734.4 879 858 170.0
B 0 219 104560 609.86 879 858 170.0
B 2 249 51807 299.63 879 858 170.0
C 1 192 275006 1386.09 845 847 197.8
C 6 80 47839 237.58 845 847 197.8
C 14 223 14428 68.66 845 847 197.8
D 5 233 1355705 6825.9 821 795 198.5
D 2 136 331397 1665.54 821 795 198.5
D 13 239 122430 612.79 821 795 198.5

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