ASTROSAT CZTI

Data Quality Report

Orbit 32081

Creation date: 2024-06-27T20:36:16.608615
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_002T04_9000004684_32081cztM0_level2.evt modeM0/AS1C06_002T04_9000004684_32081cztM0_level2_quad_clean.evt
Size (bytes)839,269,440130,533,120
Size800.4 MB 124.5 MB
Events in quadrant A3,690,797924,093
Events in quadrant B12,605,852775,356
Events in quadrant C3,899,881861,473
Events in quadrant D4,703,974859,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158401
B0427991
C0163101
D0186271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76461411.844101%
B7645340944.591236%
C76453424.473512%
D76452553.335513%

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 7671 7647 0 0 0.00% 0.00%
B 7670 7645 2262 2262 29.49% 29.59%
C 7670 7645 1 1 0.01% 0.01%
D 7670 7646 174 174 2.27% 2.28%

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 14982 73.41 952 931 191.4
A 13 6 12074 58.22 952 931 191.4
A 3 137 9488 44.71 952 931 191.4
B 10 245 7287882 46352.35 822 798 157.2
B 6 159 1843852 11723.47 822 798 157.2
B 0 190 126893 802.08 822 798 157.2
C 14 238 179148 852.44 890 894 209.1
C 3 233 108610 515.12 890 894 209.1
C 14 254 52622 247.37 890 894 209.1
D 12 233 597375 2735.34 913 886 218.1
D 8 195 269332 1231.02 913 886 218.1
D 12 227 264751 1210.02 913 886 218.1

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