ASTROSAT CZTI

Data Quality Report

Orbit 03486

Creation date: 2024-06-27T14:29:59.970544
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/AS1G05_245T01_9000000460_03486cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03486cztM0_level2_quad_clean.evt
Size (bytes)433,019,52082,350,720
Size413.0 MB 78.5 MB
Events in quadrant A3,071,695529,367
Events in quadrant B3,541,164525,164
Events in quadrant C3,309,464518,398
Events in quadrant D2,789,408507,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132272
B0142851
C0138731
D0126231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59201502.533784%
B59201362.297297%
C59201352.280405%
D5920911.537162%

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 7075 5920 44 44 0.62% 0.74%
B 7075 5920 35 35 0.49% 0.59%
C 7075 5920 53 53 0.75% 0.90%
D 7075 5920 19 19 0.27% 0.32%

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 0 50 270526 1879.68 699 685 143.6
A 0 118 72632 501.18 699 685 143.6
A 0 226 13614 90.06 699 685 143.6
B 15 204 360779 2690.94 700 685 133.8
B 8 3 206588 1538.69 700 685 133.8
B 15 85 166829 1241.57 700 685 133.8
C 7 220 360626 2279.86 678 684 157.9
C 1 192 212685 1342.81 678 684 157.9
C 1 16 73693 462.44 678 684 157.9
D 13 223 49775 296.21 681 661 165.8
D 5 233 41781 248.0 681 661 165.8
D 2 31 37563 222.56 681 661 165.8

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
Veto Counter