ASTROSAT CZTI

Data Quality Report

Orbit 36462

Creation date: 2022-06-29T17:05:06.189200
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_003T08_9000005202_36462cztM0_level2.evt modeM0/AS1A11_003T08_9000005202_36462cztM0_level2_quad_clean.evt
Size (bytes)242,521,92052,485,120
Size231.3 MB 50.1 MB
Events in quadrant A1,595,427354,996
Events in quadrant B2,138,609348,553
Events in quadrant C1,636,084346,463
Events in quadrant D1,774,472330,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064371
B081831
C065361
D070701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2918130.445511%
B29182588.841672%
C2918541.850583%
D2918290.993831%

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 2918 2918 7 7 0.24% 0.24%
B 2918 2918 166 166 5.69% 5.69%
C 2918 2918 23 23 0.79% 0.79%
D 2918 2918 17 17 0.58% 0.58%

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 106243 1424.12 369 363 74.3
A 9 143 45273 604.05 369 363 74.3
A 7 191 6402 81.23 369 363 74.3
B 0 182 506056 7436.42 351 343 68.0
B 5 172 158716 2328.85 351 343 68.0
B 15 85 30591 444.79 351 343 68.0
C 15 214 135152 1645.65 349 353 81.9
C 0 10 133218 1622.04 349 353 81.9
C 13 61 2375 24.68 349 353 81.9
D 2 153 74558 847.65 357 349 87.5
D 2 120 55730 632.59 357 349 87.5
D 2 250 54991 624.15 357 349 87.5

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