ASTROSAT CZTI

Data Quality Report

Orbit 11943

Creation date: 2024-06-27T16:20:22.816486
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/AS1A04_124T01_9000001766_11943cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11943cztM0_level2_quad_clean.evt
Size (bytes)556,727,040125,605,440
Size530.9 MB 119.8 MB
Events in quadrant A3,313,419854,531
Events in quadrant B4,055,984861,868
Events in quadrant C2,963,793852,461
Events in quadrant D6,066,087761,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145283
B0168062
C0138572
D0228412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6801440.646964%
B68012703.970004%
C680190.132333%
D680170510.366123%

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 7847 6803 3 3 0.04% 0.04%
B 7847 6803 120 120 1.53% 1.76%
C 7847 6803 1 1 0.01% 0.01%
D 7847 6803 769 769 9.80% 11.30%

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 1 162 83591 531.96 771 756 155.7
A 6 254 53199 336.79 771 756 155.7
A 1 178 43708 275.84 771 756 155.7
B 4 239 777907 5399.46 773 754 143.9
B 15 204 100133 690.46 773 754 143.9
B 11 51 58436 400.76 773 754 143.9
C 14 234 9694 51.65 755 758 173.0
C 0 10 6718 34.45 755 758 173.0
C 13 61 5545 27.67 755 758 173.0
D 1 52 2338085 13718.92 712 693 170.4
D 13 122 394805 2313.17 712 693 170.4
D 8 195 239838 1403.62 712 693 170.4

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