ASTROSAT CZTI

Data Quality Report

Orbit 06843

Creation date: 2024-06-27T15:12:16.765490
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/AS1A02_174T04_9000000938_06843cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06843cztM0_level2_quad_clean.evt
Size (bytes)460,782,72076,628,160
Size439.4 MB 73.1 MB
Events in quadrant A3,019,771479,258
Events in quadrant B4,002,145464,232
Events in quadrant C3,028,620479,131
Events in quadrant D3,478,574460,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130672
B0157731
C0129981
D0143101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263641.021875%
B62634437.073288%
C6263470.750439%
D6263721.149609%

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 7368 6264 1 1 0.01% 0.02%
B 7368 6264 292 292 3.96% 4.66%
C 7368 6264 1 1 0.01% 0.02%
D 7368 6264 12 12 0.16% 0.19%

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 8 15 60767 385.41 762 748 155.7
A 13 248 15276 93.29 762 748 155.7
A 14 111 9687 57.4 762 748 155.7
B 0 228 1075981 7518.67 745 728 143.0
B 12 111 14415 95.71 745 728 143.0
B 0 219 12932 85.34 745 728 143.0
C 9 68 105483 613.82 737 741 170.6
C 10 22 39628 227.89 737 741 170.6
C 13 61 5556 28.22 737 741 170.6
D 8 195 237012 1295.61 742 720 182.4
D 2 152 173179 945.6 742 720 182.4
D 2 216 107499 585.48 742 720 182.4

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