ASTROSAT CZTI

Data Quality Report

Orbit 24885

Creation date: 2024-06-27T19:11:01.327471
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/AS1A07_027T16_9000003642_24885cztM0_level2.evt modeM0/AS1A07_027T16_9000003642_24885cztM0_level2_quad_clean.evt
Size (bytes)532,817,28094,541,760
Size508.1 MB 90.2 MB
Events in quadrant A3,288,375604,921
Events in quadrant B3,174,768618,328
Events in quadrant C4,728,837592,572
Events in quadrant D4,498,937588,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139801
B0135501
C0181462
D0177521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65691402.131222%
B6569771.172172%
C65682684.080390%
D65681582.405603%

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 7189 6570 40 40 0.56% 0.61%
B 7189 6570 0 0 0.00% 0.00%
C 7188 6569 133 133 1.85% 2.02%
D 7188 6569 69 69 0.96% 1.05%

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 6 16 200662 1242.52 799 781 160.9
A 13 254 10718 61.77 799 781 160.9
A 3 137 7222 40.04 799 781 160.9
B 0 190 30259 195.63 790 770 150.7
B 12 111 18372 116.77 790 770 150.7
B 11 111 17002 107.68 790 770 150.7
C 7 247 1609740 9023.8 767 771 178.3
C 14 238 121143 675.1 767 771 178.3
C 7 226 6219 30.55 767 771 178.3
D 8 195 748822 3943.38 786 763 189.7
D 1 52 737568 3884.05 786 763 189.7
D 2 234 26101 133.57 786 763 189.7

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