ASTROSAT CZTI

Data Quality Report

Orbit 28997

Creation date: 2024-06-27T19:58:58.774088
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/AS1A10_073T06_9000004156_28997cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28997cztM0_level2_quad_clean.evt
Size (bytes)1,313,786,880229,423,680
Size1.2 GB 218.8 MB
Events in quadrant A8,572,9681,464,545
Events in quadrant B9,162,8811,501,499
Events in quadrant C8,823,2211,414,084
Events in quadrant D12,018,4251,333,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370094
B0385563
C0372303
D0479833

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179141130.630792%
B179143031.691415%
C179142171.211343%
D179145603.126047%

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 20224 17912 0 0 0.00% 0.00%
B 20224 17912 75 75 0.37% 0.42%
C 20224 17912 0 0 0.00% 0.00%
D 20224 17912 431 431 2.13% 2.41%

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 6 16 46697 101.94 2195 2149 437.0
A 15 192 43623 94.91 2195 2149 437.0
A 13 254 32041 68.4 2195 2149 437.0
B 10 245 327292 793.28 2190 2134 409.9
B 10 246 182222 439.36 2190 2134 409.9
B 12 111 52136 121.99 2190 2134 409.9
C 14 238 341633 689.34 2115 2125 492.5
C 3 233 195280 392.18 2115 2125 492.5
C 2 114 42029 81.02 2115 2125 492.5
D 8 195 2075506 4230.13 2094 2043 490.2
D 1 52 871588 1773.98 2094 2043 490.2
D 13 104 822962 1674.78 2094 2043 490.2

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