ASTROSAT CZTI

Data Quality Report

Orbit 13637

Creation date: 2024-06-27T16:43:47.347238
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/AS1G08_038T01_9000002018_13637cztM0_level2.evt modeM0/AS1G08_038T01_9000002018_13637cztM0_level2_quad_clean.evt
Size (bytes)579,337,92082,463,040
Size552.5 MB 78.6 MB
Events in quadrant A3,339,495487,217
Events in quadrant B3,612,130497,341
Events in quadrant C3,476,621536,089
Events in quadrant D6,651,396497,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142683
B0148512
C0142712
D0247032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6872731.062282%
B68721191.731665%
C6872570.829453%
D68721462.124563%

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 7738 6874 0 0 0.00% 0.00%
B 7738 6874 14 14 0.18% 0.20%
C 7738 6874 2 2 0.03% 0.03%
D 7738 6874 51 51 0.66% 0.74%

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 9 143 35707 202.94 850 830 171.9
A 15 157 16497 91.16 850 830 171.9
A 1 162 10262 54.88 850 830 171.9
B 0 219 173271 1081.78 845 825 159.4
B 0 214 51137 315.61 845 825 159.4
B 0 245 28811 175.56 845 825 159.4
C 3 233 214141 1119.4 833 841 190.5
C 0 207 13995 69.03 833 841 190.5
C 13 61 6018 27.17 833 841 190.5
D 13 122 2698510 13686.89 826 805 197.1
D 8 195 530120 2685.5 826 805 197.1
D 5 222 176281 890.28 826 805 197.1

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