ASTROSAT CZTI

Data Quality Report

Orbit 34055

Creation date: 2024-06-27T20:55:57.268907
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/AS1A06_003T04_9000004866_34055cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34055cztM0_level2_quad_clean.evt
Size (bytes)692,550,72065,963,520
Size660.5 MB 62.9 MB
Events in quadrant A4,523,432415,239
Events in quadrant B8,402,759365,178
Events in quadrant C3,508,151421,439
Events in quadrant D4,162,604403,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173113
B0287862
C0138552
D0161772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55835079.081139%
B5583211437.864947%
C55831422.543435%
D55832354.209207%

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 7197 5583 341 341 4.74% 6.11%
B 7196 5582 1830 1830 25.43% 32.78%
C 7197 5584 132 132 1.83% 2.36%
D 7197 5584 218 218 3.03% 3.90%

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 15 169 2017245 15581.7 640 627 129.4
A 10 83 19236 143.79 640 627 129.4
A 13 6 12673 93.08 640 627 129.4
B 5 31 2554666 22949.19 575 561 111.3
B 5 15 1758226 15793.01 575 561 111.3
B 5 172 781728 7018.96 575 561 111.3
C 0 10 520693 3513.33 634 640 148.0
C 15 214 242949 1636.97 634 640 148.0
C 0 207 115179 773.79 634 640 148.0
D 8 195 495443 2919.76 626 615 169.5
D 2 250 480647 2832.46 626 615 169.5
D 12 6 257807 1517.58 626 615 169.5

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