ASTROSAT CZTI

Data Quality Report

Orbit 16916

Creation date: 2024-06-27T17:29:28.198601
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/AS1T03_030T01_9000002512_16916cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16916cztM0_level2_quad_clean.evt
Size (bytes)668,980,80079,560,000
Size638.0 MB 75.9 MB
Events in quadrant A9,357,616431,997
Events in quadrant B3,187,602534,099
Events in quadrant C3,214,968502,622
Events in quadrant D4,059,005485,628

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322482
B0136062
C0136422
D0165232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512245837.745700%
B6512420.644963%
C6512650.998157%
D65121892.902334%

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 7608 6514 1884 1884 24.76% 28.92%
B 7608 6514 0 0 0.00% 0.00%
C 7608 6514 0 0 0.00% 0.00%
D 7608 6514 141 141 1.85% 2.16%

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 6749960 50098.03 668 656 134.7
A 12 189 35743 260.44 668 656 134.7
A 0 226 5695 37.4 668 656 134.7
B 15 35 55012 360.05 790 771 150.6
B 12 111 17671 112.18 790 771 150.6
B 4 216 17091 108.33 790 771 150.6
C 3 233 135571 764.41 753 760 176.4
C 14 238 119059 670.79 753 760 176.4
C 0 207 10736 56.57 753 760 176.4
D 1 52 1137641 6208.03 752 731 183.1
D 2 152 33813 180.64 752 731 183.1
D 2 234 25065 132.87 752 731 183.1

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