ASTROSAT CZTI

Data Quality Report

Orbit 37128

Creation date: 2024-06-27T21:35:56.138634
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/AS1A11_079T01_9000005284_37128cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37128cztM0_level2_quad_clean.evt
Size (bytes)441,691,20075,104,640
Size421.2 MB 71.6 MB
Events in quadrant A2,943,736488,874
Events in quadrant B3,711,529479,503
Events in quadrant C3,134,042474,407
Events in quadrant D3,220,733453,314

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118713
B0143922
C0124162
D0128612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5393120.222511%
B53932414.468756%
C5393661.223809%
D5393631.168181%

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 7336 5394 0 0 0.00% 0.00%
B 7336 5394 187 187 2.55% 3.47%
C 7336 5394 64 64 0.87% 1.19%
D 7336 5394 48 48 0.65% 0.89%

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 254389 1850.1 689 677 137.1
A 13 6 20173 142.17 689 677 137.1
A 9 143 7821 52.1 689 677 137.1
B 5 184 671483 5299.22 667 650 126.6
B 5 172 353278 2785.57 667 650 126.6
B 5 255 22811 175.06 667 650 126.6
C 15 214 238303 1554.03 655 660 152.9
C 0 10 190868 1243.84 655 660 152.9
C 14 254 152522 993.08 655 660 152.9
D 13 249 132105 829.56 659 643 158.5
D 12 17 93831 588.04 659 643 158.5
D 2 250 90347 566.06 659 643 158.5

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