ASTROSAT CZTI

Data Quality Report

Orbit 35672

Creation date: 2022-05-04T09:22:39.620270
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/AS1A09_029T02_9000005106_35672cztM0_level2.evt modeM0/AS1A09_029T02_9000005106_35672cztM0_level2_quad_clean.evt
Size (bytes)463,343,04065,275,200
Size441.9 MB 62.3 MB
Events in quadrant A2,832,328400,637
Events in quadrant B3,587,521400,863
Events in quadrant C3,396,945400,195
Events in quadrant D3,810,194357,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121973
B0145782
C0136512
D0154122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596980.134026%
B59691622.714022%
C59691913.199866%
D59693425.729603%

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 8891 5971 1 1 0.01% 0.02%
B 8891 5971 116 116 1.30% 1.94%
C 8891 5971 158 158 1.78% 2.65%
D 8891 5970 320 320 3.60% 5.36%

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 151558 1090.39 679 664 138.4
A 15 169 29226 206.4 679 664 138.4
A 13 6 17282 120.09 679 664 138.4
B 5 172 606707 4669.78 669 650 129.8
B 5 255 187845 1442.37 669 650 129.8
B 5 31 104355 799.07 669 650 129.8
C 0 10 329977 2165.73 651 653 152.1
C 1 23 266244 1746.6 651 653 152.1
C 15 214 247397 1622.66 651 653 152.1
D 13 249 896953 5670.77 639 620 158.1
D 12 6 108487 682.43 639 620 158.1
D 2 153 46456 289.99 639 620 158.1

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