ASTROSAT CZTI

Data Quality Report

Orbit 46520

Creation date: 2024-06-27T23:24:09.927932
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_068T07_9000006222_46520cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46520cztM0_level2_quad_clean.evt
Size (bytes)598,216,320106,980,480
Size570.5 MB 102.0 MB
Events in quadrant A6,961,248729,237
Events in quadrant B3,714,454768,637
Events in quadrant C6,896,601591,272
Events in quadrant D4,042,580674,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253942
B0154282
C0251432
D0164722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68204726.920821%
B68203314.853372%
C6821159523.383668%
D68212243.283976%

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 7695 6820 41 41 0.53% 0.60%
B 7695 6820 50 50 0.65% 0.73%
C 7696 6822 1252 1252 16.27% 18.35%
D 7696 6821 50 50 0.65% 0.73%

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 3546879 21586.67 788 769 164.3
A 9 191 106762 645.22 788 769 164.3
A 14 235 105865 639.76 788 769 164.3
B 5 172 189128 1198.71 794 768 157.1
B 0 190 124197 785.49 794 768 157.1
B 3 112 61170 384.39 794 768 157.1
C 14 254 3956039 24325.02 691 693 162.6
C 9 54 151672 928.51 691 693 162.6
C 12 2 60451 367.51 691 693 162.6
D 1 52 494712 2502.15 787 761 197.4
D 8 176 140291 706.8 787 761 197.4
D 2 249 124408 626.34 787 761 197.4

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