ASTROSAT CZTI

Data Quality Report

Orbit 20201208_A10_057T05_9000004060_level2

Creation date: 2021-01-07T00:43:34.480480
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_057T05_9000004060cztM0_level2_bc.evt modeM0/AS1A10_057T05_9000004060cztM0_level2_quad_clean.evt
Size (bytes)2,949,508,800993,139,200
Size2.7 GB 947.1 MB
Events in quadrant A16,644,5366,532,504
Events in quadrant B16,005,0166,450,382
Events in quadrant C16,530,3196,151,524
Events in quadrant D35,195,4715,964,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014760
B014740
C014740
D014740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01530880
B01521910
C01562780
D02320660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01690
D01690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A727137581.042455%
B726839121.254764%
C7270814031.929636%
D7263671239.806432%

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 95759 72812 0 0 0.00% 0.00%
B 95758 72781 4 4 0.00% 0.01%
C 95757 72797 17 17 0.02% 0.02%
D 95757 72735 560 560 0.58% 0.77%

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 5 98 353310 398.89 4110 4050 875.6
A 0 13 309608 348.98 4110 4050 875.6
A 13 254 117311 129.35 4110 4050 875.6
B 0 230 156540 201.12 4046 3951 758.7
B 5 255 77278 96.65 4046 3951 758.7
B 0 183 72704 90.62 4046 3951 758.7
C 3 233 802200 889.63 3850 3842 897.4
C 15 208 755426 837.51 3850 3842 897.4
C 2 16 166826 181.62 3850 3842 897.4
D 8 195 5964322 6908.9 3783 3669 862.7
D 12 1 5621106 6511.09 3783 3669 862.7
D 1 52 4903481 5679.3 3783 3669 862.7

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