ASTROSAT CZTI

Data Quality Report

Orbit 04617

Creation date: 2024-06-27T14:44:36.328664
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_154T01_9000000576_04617cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04617cztM0_level2_quad_clean.evt
Size (bytes)490,176,00070,453,440
Size467.5 MB 67.2 MB
Events in quadrant A3,080,700432,674
Events in quadrant B4,001,976438,306
Events in quadrant C3,079,527432,584
Events in quadrant D4,260,409395,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131633
B0157692
C0132212
D0170232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6216230.370013%
B62162784.472329%
C6216430.691763%
D62163295.292793%

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 7571 6217 4 4 0.05% 0.06%
B 7571 6217 180 180 2.38% 2.90%
C 7571 6217 26 26 0.34% 0.42%
D 7571 6217 298 298 3.94% 4.79%

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 13 251 80650 517.05 757 742 154.5
A 8 15 67696 433.23 757 742 154.5
A 15 174 9510 56.73 757 742 154.5
B 5 200 659970 4529.65 764 750 145.5
B 14 167 172036 1176.95 764 750 145.5
B 10 246 48025 324.84 764 750 145.5
C 9 247 147702 855.48 737 743 171.8
C 14 48 28279 160.29 737 743 171.8
C 8 128 7324 38.31 737 743 171.8
D 8 112 758109 4450.55 707 686 170.2
D 13 235 591716 3472.84 707 686 170.2
D 2 136 92882 541.74 707 686 170.2

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