ASTROSAT CZTI

Data Quality Report

Orbit 03331

Creation date: 2024-06-27T14:27:40.583278
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/AS1G05_246T01_9000000450_03331cztM0_level2.evt modeM0/AS1G05_246T01_9000000450_03331cztM0_level2_quad_clean.evt
Size (bytes)439,142,40076,121,280
Size418.8 MB 72.6 MB
Events in quadrant A3,034,924459,031
Events in quadrant B3,362,523472,409
Events in quadrant C3,387,258463,467
Events in quadrant D3,062,189446,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137132
B0141251
C0146701
D0140951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6652951.428142%
B6652991.488274%
C6652961.443175%
D66521001.503307%

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 7502 6653 1 1 0.01% 0.02%
B 7502 6653 2 2 0.03% 0.03%
C 7502 6653 26 26 0.35% 0.39%
D 7502 6653 20 20 0.27% 0.30%

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 0 50 30018 184.04 771 753 159.0
A 7 16 17598 105.93 771 753 159.0
A 8 15 13572 80.61 771 753 159.0
B 15 204 240945 1561.54 783 762 153.8
B 14 167 51757 331.54 783 762 153.8
B 0 229 40866 260.74 783 762 153.8
C 14 223 384666 2155.38 754 758 178.1
C 8 208 16345 87.51 754 758 178.1
C 6 80 11519 60.42 754 758 178.1
D 13 223 116700 626.67 754 733 185.1
D 13 174 27667 145.55 754 733 185.1
D 13 239 19048 98.97 754 733 185.1

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