ASTROSAT CZTI

Data Quality Report

Orbit 12242

Creation date: 2024-06-27T16:24:19.370109
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/AS1C03_014T03_9000001808_12242cztM0_level2.evt modeM0/AS1C03_014T03_9000001808_12242cztM0_level2_quad_clean.evt
Size (bytes)491,630,400124,257,600
Size468.9 MB 118.5 MB
Events in quadrant A3,863,189832,981
Events in quadrant B3,877,710845,740
Events in quadrant C3,159,676842,388
Events in quadrant D3,555,076796,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157072
B0156611
C0136661
D0148321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63901241.940532%
B63902594.053208%
C6390921.439750%
D63902153.364632%

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 7471 6392 3 3 0.04% 0.05%
B 7471 6392 106 106 1.42% 1.66%
C 7471 6392 15 15 0.20% 0.23%
D 7471 6392 76 76 1.02% 1.19%

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 13 251 419682 2684.25 771 756 156.1
A 1 162 165888 1058.07 771 756 156.1
A 1 178 93388 593.53 771 756 156.1
B 4 239 543005 3791.2 767 750 143.0
B 3 64 176123 1226.13 767 750 143.0
B 11 51 84324 584.31 767 750 143.0
C 15 208 184964 1062.63 759 762 173.3
C 4 175 14509 79.3 759 762 173.3
C 13 61 5530 27.51 759 762 173.3
D 10 199 359836 2019.77 749 729 177.8
D 13 104 92228 514.63 749 729 177.8
D 2 14 57237 317.82 749 729 177.8

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