ASTROSAT CZTI

Data Quality Report

Orbit 16904

Creation date: 2024-06-27T17:29:18.357346
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/AS1A05_004T03_9000002508_16904cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16904cztM0_level2_quad_clean.evt
Size (bytes)668,234,88049,838,400
Size637.3 MB 47.5 MB
Events in quadrant A9,327,123237,812
Events in quadrant B3,419,373286,690
Events in quadrant C3,244,136269,283
Events in quadrant D3,804,463258,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322122
B0142322
C0136432
D0155623

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534248938.093052%
B6534340.520355%
C6534450.688705%
D65331291.974591%

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 7785 6536 1873 1873 24.06% 28.66%
B 7785 6536 2 2 0.03% 0.03%
C 7785 6536 0 0 0.00% 0.00%
D 7784 6535 95 95 1.22% 1.45%

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 15 174 6336108 45458.9 694 682 139.4
A 4 2 299205 2142.01 694 682 139.4
A 12 189 17276 119.07 694 682 139.4
B 15 35 89163 568.0 833 815 155.5
B 0 189 23590 146.42 833 815 155.5
B 4 216 18846 115.92 833 815 155.5
C 14 238 125630 684.0 790 797 182.5
C 3 233 36469 195.46 790 797 182.5
C 13 61 5770 27.25 790 797 182.5
D 1 52 596528 3130.71 788 766 190.3
D 12 235 124474 650.08 788 766 190.3
D 2 33 75677 393.66 788 766 190.3

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