ASTROSAT CZTI

Data Quality Report

Orbit 42819

Creation date: 2024-06-27T22:44:36.743798
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/AS1C07_001T12_9000005826_42819cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42819cztM0_level2_quad_clean.evt
Size (bytes)386,236,80090,264,960
Size368.3 MB 86.1 MB
Events in quadrant A3,110,193623,038
Events in quadrant B3,628,361597,583
Events in quadrant C4,152,536574,214
Events in quadrant D2,982,288556,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126582
B0145302
C0158593
D0127602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5450210.385321%
B54503075.633028%
C54492093.835566%
D5449851.559919%

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 7243 5451 6 6 0.08% 0.11%
B 7243 5451 277 277 3.82% 5.08%
C 7242 5450 230 230 3.18% 4.22%
D 7242 5450 79 79 1.09% 1.45%

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 693863 5718.18 593 583 121.2
A 12 189 66093 540.33 593 583 121.2
A 13 6 19918 159.48 593 583 121.2
B 5 255 968693 8775.08 577 561 110.3
B 5 172 179124 1618.48 577 561 110.3
B 0 245 79164 712.45 577 561 110.3
C 3 233 1534135 11529.47 572 575 133.0
C 15 214 224041 1680.04 572 575 133.0
C 14 254 62652 466.7 572 575 133.0
D 1 47 311532 2220.45 581 566 140.0
D 10 118 73063 517.66 581 566 140.0
D 2 120 72865 516.25 581 566 140.0

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