ASTROSAT CZTI

Data Quality Report

Orbit 31150

Creation date: 2024-06-27T20:24:07.399476
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/AS1C06_002T01_9000004500_31150cztM0_level2.evt modeM0/AS1C06_002T01_9000004500_31150cztM0_level2_quad_clean.evt
Size (bytes)633,594,240129,574,080
Size604.2 MB 123.6 MB
Events in quadrant A3,252,860913,041
Events in quadrant B5,441,202886,619
Events in quadrant C3,529,217875,423
Events in quadrant D6,550,835820,816

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136311
B0202831
C0146381
D0238923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140991.612378%
B61412464.005862%
C61412123.452206%
D61405729.315961%

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 7425 6141 0 0 0.00% 0.00%
B 7426 6142 45 45 0.61% 0.73%
C 7426 6142 7 7 0.09% 0.11%
D 7425 6141 376 376 5.06% 6.12%

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 12624 71.38 838 822 165.3
A 12 96 9911 54.97 838 822 165.3
A 0 226 7334 39.39 838 822 165.3
B 6 159 1849829 12495.45 813 795 148.0
B 0 190 120354 807.96 813 795 148.0
B 12 18 104858 703.24 813 795 148.0
C 14 238 150950 812.64 803 812 184.8
C 3 233 83833 449.36 803 812 184.8
C 0 10 58147 310.33 803 812 184.8
D 8 195 2014937 10738.13 799 780 187.6
D 13 174 522597 2781.98 799 780 187.6
D 2 250 391702 2084.13 799 780 187.6

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