ASTROSAT CZTI

Data Quality Report

Orbit 34953

Creation date: 2022-03-16T21:25:35.035809
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_047T09_9000005010_34953cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34953cztM0_level2_quad_clean.evt
Size (bytes)496,632,96088,655,040
Size473.6 MB 84.5 MB
Events in quadrant A2,669,924593,802
Events in quadrant B4,073,016576,685
Events in quadrant C3,006,562584,135
Events in quadrant D4,906,847533,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116753
B0158142
C0123082
D0185832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566360.105951%
B56634117.257637%
C5663671.183118%
D56633596.339396%

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 7305 5664 0 0 0.00% 0.00%
B 7305 5664 303 303 4.15% 5.35%
C 7305 5664 46 46 0.63% 0.81%
D 7305 5664 321 321 4.39% 5.67%

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 69786 514.18 670 658 134.4
A 13 254 9762 67.72 670 658 134.4
A 13 6 8991 61.98 670 658 134.4
B 5 172 1173033 9287.95 644 627 126.2
B 4 232 170672 1347.12 644 627 126.2
B 0 190 139897 1103.32 644 627 126.2
C 15 214 237822 1580.9 643 647 150.0
C 0 10 219615 1459.54 643 647 150.0
C 5 4 19685 126.9 643 647 150.0
D 8 195 1007377 6408.38 636 618 157.1
D 10 118 298580 1896.63 636 618 157.1
D 13 249 254427 1615.58 636 618 157.1

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