ASTROSAT CZTI

Data Quality Report

Orbit 20210213_A10_063T01_9000004182_level2

Creation date: 2021-02-17T12:29:53.555442
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_063T01_9000004182cztM0_level2_bc.evt modeM0/AS1A10_063T01_9000004182cztM0_level2_quad_clean.evt
Size (bytes)5,735,989,4401,642,357,440
Size5.3 GB 1.5 GB
Events in quadrant A27,788,07110,441,894
Events in quadrant B31,061,41210,639,612
Events in quadrant C34,114,97410,285,845
Events in quadrant D72,193,2579,754,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02671300
B02791400
C02919000
D04170600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025580
B025580
C025580
D025580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12583519501.549648%
B12583428482.263299%
C12583529732.362618%
D1258341296410.302462%

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 143169 125841 114 114 0.08% 0.09%
B 143170 125837 129 129 0.09% 0.10%
C 143170 125838 0 0 0.00% 0.00%
D 143170 125838 3783 3783 2.64% 3.01%

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 11 29 525815 352.24 6898 6785 1473.5
A 6 16 261944 173.16 6898 6785 1473.5
A 13 254 207207 136.02 6898 6785 1473.5
B 10 245 2909718 2243.0 6964 6808 1294.2
B 10 246 473236 360.4 6964 6808 1294.2
B 0 190 443852 337.69 6964 6808 1294.2
C 3 233 7947977 5080.04 6692 6671 1563.2
C 2 114 245215 152.6 6692 6671 1563.2
C 9 54 66950 38.56 6692 6671 1563.2
D 1 52 25084745 16890.14 6567 6366 1484.8
D 8 195 19887608 13389.9 6567 6366 1484.8
D 12 233 859084 574.3 6567 6366 1484.8

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