ASTROSAT CZTI

Data Quality Report

Orbit 31611

Creation date: 2024-06-27T20:30:43.073369
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/AS1A10_094T76_9000004616_31611cztM0_level2.evt modeM0/AS1A10_094T76_9000004616_31611cztM0_level2_quad_clean.evt
Size (bytes)492,672,960124,873,920
Size469.8 MB 119.1 MB
Events in quadrant A2,957,325869,260
Events in quadrant B4,880,386867,117
Events in quadrant C3,314,139823,022
Events in quadrant D3,364,110806,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126991
B0188181
C0135891
D0137961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5964370.620389%
B5965791.324392%
C59641833.068410%
D5964741.240778%

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 7154 5965 5 5 0.07% 0.08%
B 7155 5966 5 5 0.07% 0.08%
C 7154 5965 70 70 0.98% 1.17%
D 7154 5965 54 54 0.75% 0.91%

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 4 2 33298 216.74 756 741 150.2
A 13 254 11559 72.02 756 741 150.2
A 3 137 7051 42.01 756 741 150.2
B 6 159 1754505 12536.48 750 734 139.9
B 4 80 58676 414.19 750 734 139.9
B 6 235 36256 253.92 750 734 139.9
C 3 233 254222 1536.75 711 718 165.0
C 0 10 137546 829.46 711 718 165.0
C 14 238 120430 725.7 711 718 165.0
D 8 195 256110 1501.5 719 698 170.1
D 12 218 177088 1036.95 719 698 170.1
D 13 249 88825 518.07 719 698 170.1

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