ASTROSAT CZTI

Data Quality Report

Orbit 33145

Creation date: 2024-06-27T20:45:24.718557
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/AS1A11_096T01_9000004766_33145cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33145cztM0_level2_quad_clean.evt
Size (bytes)2,157,480,000272,770,560
Size2.0 GB 260.1 MB
Events in quadrant A11,102,7621,701,186
Events in quadrant B16,235,6791,703,446
Events in quadrant C14,022,7281,660,695
Events in quadrant D22,368,5171,549,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04922
C04922
D04924

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048515174
B063955316
C057028183
D083557402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0790
C0790
D0790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23929270.112834%
B2392214035.864894%
C239285752.403042%
D2392316616.943109%

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 31115 23955 1 1 0.00% 0.00%
B 31115 23938 652 652 2.10% 2.72%
C 31115 23945 450 450 1.45% 1.88%
D 31115 23941 1206 1206 3.88% 5.04%

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 44633 74.07 2844 2791 564.9
A 15 169 41621 68.74 2844 2791 564.9
A 13 6 36321 59.36 2844 2791 564.9
B 5 172 2465455 4689.2 2776 2705 525.2
B 0 219 2028654 3857.51 2776 2705 525.2
B 0 189 232712 437.94 2776 2705 525.2
C 7 221 1507326 2400.52 2736 2756 626.8
C 1 241 1023360 1628.36 2736 2756 626.8
C 0 10 513095 814.24 2736 2756 626.8
D 8 195 4773368 7052.1 2689 2625 676.5
D 2 250 3601698 5320.14 2689 2625 676.5
D 2 120 613326 902.74 2689 2625 676.5

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