ASTROSAT CZTI

Data Quality Report

Orbit 13208

Creation date: 2024-06-27T16:37:43.705863
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_104T04_9000001966_13208cztM0_level2.evt modeM0/AS1A04_104T04_9000001966_13208cztM0_level2_quad_clean.evt
Size (bytes)1,010,802,240138,654,720
Size964.0 MB 132.2 MB
Events in quadrant A6,220,838833,480
Events in quadrant B9,591,497809,510
Events in quadrant C5,955,436845,992
Events in quadrant D7,965,253811,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268353
B0367942
C0265992
D0324852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130001681.292308%
B13000135710.438462%
C130001341.030769%
D130003092.376923%

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 14251 13003 1 1 0.01% 0.01%
B 14251 13003 834 834 5.85% 6.41%
C 14251 13003 2 2 0.01% 0.02%
D 14251 13003 128 128 0.90% 0.98%

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 8 15 138171 428.77 1554 1521 318.7
A 1 162 45491 137.97 1554 1521 318.7
A 1 178 17037 48.68 1554 1521 318.7
B 4 239 1831567 6396.76 1497 1458 286.1
B 0 85 1245638 4348.77 1497 1458 286.1
B 3 64 328987 1144.81 1497 1458 286.1
C 15 208 29425 79.46 1513 1519 351.2
C 8 128 11616 28.75 1513 1519 351.2
C 13 61 11119 27.34 1513 1519 351.2
D 13 122 1231460 3346.42 1504 1457 367.6
D 1 52 508191 1378.65 1504 1457 367.6
D 8 195 337161 913.34 1504 1457 367.6

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