ASTROSAT CZTI

Data Quality Report

Orbit 23579

Creation date: 2024-06-27T18:56:22.558872
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_011T01_9000003482_23579cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23579cztM0_level2_quad_clean.evt
Size (bytes)464,679,360105,966,720
Size443.2 MB 101.1 MB
Events in quadrant A3,180,284703,055
Events in quadrant B3,591,977725,200
Events in quadrant C3,443,079668,086
Events in quadrant D3,416,362659,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134252
B0147432
C0142112
D0145472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494170.261780%
B64941101.693871%
C64941682.587003%
D6494220.338774%

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 7854 6495 0 0 0.00% 0.00%
B 7854 6495 63 63 0.80% 0.97%
C 7854 6495 102 102 1.30% 1.57%
D 7854 6495 12 12 0.15% 0.18%

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 13 254 11343 64.81 824 809 162.5
A 0 226 7076 38.56 824 809 162.5
A 3 137 6708 36.29 824 809 162.5
B 14 207 161988 1066.49 822 805 151.1
B 0 189 69775 456.35 822 805 151.1
B 3 64 50375 327.99 822 805 151.1
C 0 10 284995 1609.32 774 781 176.6
C 14 238 126571 712.27 774 781 176.6
C 1 16 13627 72.74 774 781 176.6
D 9 85 184105 966.89 788 765 189.6
D 1 52 86358 451.4 788 765 189.6
D 7 223 70339 366.92 788 765 189.6

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