ASTROSAT CZTI

Data Quality Report

Orbit 33890

Creation date: 2024-06-27T20:53:49.949767
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/AS1T04_090T01_9000004840_33890cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33890cztM0_level2_quad_clean.evt
Size (bytes)485,501,76059,008,320
Size463.0 MB 56.3 MB
Events in quadrant A2,476,106362,948
Events in quadrant B3,012,771362,085
Events in quadrant C3,188,786359,765
Events in quadrant D5,661,725325,948

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108443
B0123542
C0125442
D0206642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537040.074488%
B5370971.806331%
C53701602.979516%
D537078914.692737%

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 7012 5371 1 1 0.01% 0.02%
B 7012 5371 59 59 0.84% 1.10%
C 7012 5371 112 112 1.60% 2.09%
D 7012 5371 636 636 9.07% 11.84%

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 6 13652 102.62 630 617 127.0
A 10 83 12327 92.19 630 617 127.0
A 15 169 11459 85.35 630 617 127.0
B 5 172 267977 2249.53 622 608 118.9
B 5 255 119198 997.77 622 608 118.9
B 5 207 47280 392.68 622 608 118.9
C 0 10 488627 3507.78 601 605 139.1
C 15 214 230692 1653.81 601 605 139.1
C 3 233 64053 456.05 601 605 139.1
D 12 235 1243459 8666.27 578 561 143.4
D 8 195 1222417 8519.56 578 561 143.4
D 2 250 427667 2978.05 578 561 143.4

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