ASTROSAT CZTI

Data Quality Report

Orbit 00218

Creation date: 2024-06-27T13:58:04.219617
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/AS1P01_118T02_9000000022_00218cztM0_level2.evt modeM0/AS1P01_118T02_9000000022_00218cztM0_level2_quad_clean.evt
Size (bytes)851,250,24060,419,520
Size811.8 MB 57.6 MB
Events in quadrant A6,534,522365,811
Events in quadrant B6,686,536366,885
Events in quadrant C5,941,836357,399
Events in quadrant D6,245,519348,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233692
B0238031
C0216701
D0225371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558540.071620%
B558540.071620%
C558510.017905%
D5585420.752014%

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 7291 5586 151 151 2.07% 2.70%
B 7291 5586 105 105 1.44% 1.88%
C 7291 5586 53 53 0.73% 0.95%
D 7291 5586 139 139 1.91% 2.49%

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 12 149 48952 131.25 1645 1631 360.6
A 0 253 45761 122.4 1645 1631 360.6
A 5 244 44795 119.72 1645 1631 360.6
B 5 46 333410 871.91 1646 1658 380.5
B 15 219 33720 84.27 1646 1658 380.5
B 2 253 22910 55.85 1646 1658 380.5
C 1 1 11307 23.29 1504 1562 418.4
C 9 63 10804 22.09 1504 1562 418.4
C 1 192 10261 20.79 1504 1562 418.4
D 1 4 368063 809.29 1456 1517 452.9
D 2 85 156772 342.79 1456 1517 452.9
D 13 117 37813 80.14 1456 1517 452.9

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