ASTROSAT CZTI

Data Quality Report

Orbit 47911

Creation date: 2024-08-07T11:03:54.448372
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/AS1A13_074T02_9000006378_47911cztM0_level2.fits modeM0/AS1A13_074T02_9000006378_47911cztM0_level2_quad_clean.evt
Size (bytes)457,211,520108,573,120
Size436.0 MB 103.5 MB
Events in quadrant A7,312,007681,840
Events in quadrant B3,091,652754,312
Events in quadrant C2,928,237734,555
Events in quadrant D3,092,072667,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261725
B0135352
C0133092
D0139142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64445238.116077%
B6444570.884544%
C6444290.450031%
D6444440.682806%

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 7629 6445 302 302 3.96% 4.69%
B 7629 6445 1 1 0.01% 0.02%
C 7629 6445 1 1 0.01% 0.02%
D 7629 6445 18 18 0.24% 0.28%

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 10 83 3792594 25782.6 705 688 147.1
A 13 248 798633 5425.53 705 688 147.1
A 3 137 7810 48.43 705 688 147.1
B 0 200 94110 650.54 728 705 143.6
B 0 198 45580 312.54 728 705 143.6
B 7 219 36676 250.53 728 705 143.6
C 12 2 37777 215.62 734 737 171.8
C 0 207 21606 121.49 734 737 171.8
C 13 61 4871 24.07 734 737 171.8
D 2 249 162727 885.52 730 706 183.0
D 13 29 81455 441.33 730 706 183.0
D 2 234 28114 149.8 730 706 183.0

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