ASTROSAT CZTI

Data Quality Report

Orbit 24475

Creation date: 2024-06-27T19:06:22.637489
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/AS1T03_183T01_9000003606_24475cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24475cztM0_level2_quad_clean.evt
Size (bytes)532,391,040127,126,080
Size507.7 MB 121.2 MB
Events in quadrant A3,094,496891,167
Events in quadrant B3,283,736906,535
Events in quadrant C3,045,776841,702
Events in quadrant D6,287,995786,815

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131201
B0136421
C0129271
D0229911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6072711.169302%
B60731452.387617%
C6073861.416104%
D60735038.282562%

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 7327 6073 2 2 0.03% 0.03%
B 7328 6074 60 60 0.82% 0.99%
C 7328 6074 3 3 0.04% 0.05%
D 7328 6074 459 459 6.26% 7.56%

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 41070 255.32 792 779 157.8
A 13 254 9738 56.77 792 779 157.8
A 0 226 6945 39.07 792 779 157.8
B 6 36 182656 1250.68 788 769 145.4
B 12 111 16833 110.46 788 769 145.4
B 11 111 14848 96.81 788 769 145.4
C 14 238 123291 721.62 742 745 169.8
C 2 16 27808 159.36 742 745 169.8
C 13 61 5294 26.79 742 745 169.8
D 12 218 1749065 9870.88 736 715 177.1
D 1 52 1313833 7413.63 736 715 177.1
D 8 195 340927 1920.78 736 715 177.1

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