ASTROSAT CZTI

Data Quality Report

Orbit 37230

Creation date: 2024-06-27T21:37:11.666536
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/AS1A10_123T11_9000005286_37230cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37230cztM0_level2_quad_clean.evt
Size (bytes)459,264,96090,155,520
Size438.0 MB 86.0 MB
Events in quadrant A3,121,540613,834
Events in quadrant B3,018,490617,539
Events in quadrant C2,820,484593,995
Events in quadrant D4,604,365549,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122833
B0121472
C0111552
D0169632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5071811.597318%
B5071370.729639%
C5071671.321238%
D50714368.597910%

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 7073 5072 44 44 0.62% 0.87%
B 7073 5072 19 19 0.27% 0.37%
C 7073 5072 53 53 0.75% 1.04%
D 7073 5072 416 416 5.88% 8.20%

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 262011 2003.83 656 645 130.4
A 15 237 253843 1941.21 656 645 130.4
A 13 248 26390 197.38 656 645 130.4
B 0 213 120142 985.69 646 634 121.2
B 0 230 81277 665.14 646 634 121.2
B 0 190 79618 651.45 646 634 121.2
C 15 214 217013 1523.48 619 625 142.0
C 0 10 179247 1257.59 619 625 142.0
C 13 61 4163 24.91 619 625 142.0
D 2 249 1127743 7617.55 615 599 148.0
D 10 253 744017 5024.22 615 599 148.0
D 12 235 87015 584.02 615 599 148.0

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