ASTROSAT CZTI

Data Quality Report

Orbit 34438

Creation date: 2022-02-10T00:18:36.293916
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_058T05_9000004918_34438cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34438cztM0_level2_quad_clean.evt
Size (bytes)476,945,28077,679,360
Size454.9 MB 74.1 MB
Events in quadrant A2,491,917521,608
Events in quadrant B3,721,111517,012
Events in quadrant C2,801,170506,020
Events in quadrant D5,101,239466,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103113
B0142922
C0110622
D0185582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486370.143944%
B48632585.305367%
C4863911.871273%
D48631933.968744%

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 7016 4864 0 0 0.00% 0.00%
B 7016 4864 177 177 2.52% 3.64%
C 7016 4864 77 77 1.10% 1.58%
D 7016 4864 178 178 2.54% 3.66%

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 37294 294.61 628 620 124.5
A 9 143 20115 156.61 628 620 124.5
A 13 6 9188 68.83 628 620 124.5
B 4 171 1013451 8844.46 612 599 114.5
B 5 172 216838 1888.25 612 599 114.5
B 15 85 27328 233.4 612 599 114.5
C 0 10 238464 1726.46 596 605 137.8
C 15 214 203630 1473.62 596 605 137.8
C 14 67 12853 88.9 596 605 137.8
D 8 195 1356149 9506.03 588 575 142.6
D 7 223 737582 5168.3 588 575 142.6
D 12 79 437586 3064.56 588 575 142.6

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