ASTROSAT CZTI

Data Quality Report

Orbit 14588

Creation date: 2024-06-27T16:57:12.229935
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/AS1G08_055T02_9000002148_14588cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14588cztM0_level2_quad_clean.evt
Size (bytes)552,392,64096,016,320
Size526.8 MB 91.6 MB
Events in quadrant A4,534,404616,601
Events in quadrant B3,870,301617,255
Events in quadrant C4,306,439607,385
Events in quadrant D3,571,936607,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180633
B0158362
C0176282
D0149792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65861822.763438%
B65862143.249317%
C65861392.110538%
D65861011.533556%

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 8927 6587 4 4 0.04% 0.06%
B 8927 6587 78 78 0.87% 1.18%
C 8927 6587 11 11 0.12% 0.17%
D 8927 6587 10 10 0.11% 0.15%

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 0 23 1032052 5846.94 875 858 176.4
A 0 226 68384 382.88 875 858 176.4
A 8 15 40803 226.49 875 858 176.4
B 10 16 341703 2057.78 873 852 165.6
B 0 189 38205 225.51 873 852 165.6
B 0 205 25636 149.63 873 852 165.6
C 3 233 938535 4728.96 863 871 198.3
C 13 61 6024 25.99 863 871 198.3
C 3 232 3540 13.46 863 871 198.3
D 12 110 145550 702.19 864 842 206.1
D 10 199 58916 281.8 864 842 206.1
D 13 122 49237 234.83 864 842 206.1

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