ASTROSAT CZTI

Data Quality Report

Orbit 23162

Creation date: 2024-06-27T18:50:43.422217
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/AS1A08_009T01_9000003422_23162cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23162cztM0_level2_quad_clean.evt
Size (bytes)454,394,880105,874,560
Size433.3 MB 101.0 MB
Events in quadrant A3,042,352688,783
Events in quadrant B3,157,284708,942
Events in quadrant C3,574,250682,282
Events in quadrant D3,539,832667,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360895
B01382790
C015005122
D01537792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01340
C01344
D01342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0181
C0180
D0181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6585170.258162%
B6590260.394537%
C65921612.442354%
D65931902.881844%

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 7540 6610 0 0 0.00% 0.00%
B 7536 6617 0 0 0.00% 0.00%
C 7532 6610 7 7 0.09% 0.11%
D 7540 6619 111 111 1.47% 1.68%

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 10262 60.09 787 771 158.0
A 3 137 6881 38.68 787 771 158.0
A 0 226 6530 36.46 787 771 158.0
B 0 190 21540 136.15 796 775 152.5
B 12 111 17746 111.28 796 775 152.5
B 11 111 15848 98.83 796 775 152.5
C 0 10 289760 1639.45 766 771 176.3
C 14 238 119872 675.67 766 771 176.3
C 8 208 101749 572.85 766 771 176.3
D 12 233 261658 1423.56 762 740 183.3
D 12 17 183752 998.51 762 740 183.3
D 1 52 122006 661.62 762 740 183.3

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