ASTROSAT CZTI

Data Quality Report

Orbit 08311

Creation date: 2024-06-27T15:30:50.319331
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/AS1A03_093T01_9000001156_08311cztM0_level2.evt modeM0/AS1A03_093T01_9000001156_08311cztM0_level2_quad_clean.evt
Size (bytes)611,084,16086,091,840
Size582.8 MB 82.1 MB
Events in quadrant A7,886,888446,484
Events in quadrant B3,340,881580,484
Events in quadrant C2,981,607571,325
Events in quadrant D3,849,887548,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280342
B0141921
C0135741
D0159711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6596198130.033354%
B65961652.501516%
C6596711.076410%
D65962543.850819%

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 7040 6596 1518 1518 21.56% 23.01%
B 7041 6597 8 8 0.11% 0.12%
C 7041 6598 0 0 0.00% 0.00%
D 7041 6597 170 170 2.41% 2.58%

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 15 234 4696338 33856.14 667 652 138.7
A 0 23 419734 3021.6 667 652 138.7
A 14 111 132461 950.35 667 652 138.7
B 0 214 155029 1000.98 794 775 154.1
B 4 81 40912 260.46 794 775 154.1
B 0 219 20429 127.54 794 775 154.1
C 13 61 5788 27.99 764 768 179.3
C 9 54 2126 7.57 764 768 179.3
C 3 202 1833 5.94 764 768 179.3
D 1 7 743662 3682.38 760 739 201.8
D 12 221 61429 300.82 760 739 201.8
D 12 233 35111 170.37 760 739 201.8

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