ASTROSAT CZTI

Data Quality Report

Orbit 04645

Creation date: 2024-06-27T14:45:01.561251
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_218T03_9000000582_04645cztM0_level2.evt modeM0/AS1G05_218T03_9000000582_04645cztM0_level2_quad_clean.evt
Size (bytes)508,276,80080,688,960
Size484.7 MB 77.0 MB
Events in quadrant A2,876,604534,418
Events in quadrant B3,132,039548,873
Events in quadrant C2,956,839525,526
Events in quadrant D6,005,018399,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128853
B0134452
C0131402
D0221672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6223120.192833%
B6223480.771332%
C6223310.498152%
D6223122419.668970%

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 7563 6224 1 1 0.01% 0.02%
B 7563 6224 8 8 0.11% 0.13%
C 7563 6224 9 9 0.12% 0.14%
D 7563 6224 1139 1139 15.06% 18.30%

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 8 15 15168 97.98 736 722 147.4
A 15 234 11113 70.48 736 722 147.4
A 7 16 10480 66.18 736 722 147.4
B 4 80 69562 482.91 756 738 142.5
B 14 167 54117 374.54 756 738 142.5
B 15 204 41428 285.51 756 738 142.5
C 1 16 82504 487.08 725 728 167.9
C 8 128 17851 101.99 725 728 167.9
C 7 237 10424 57.75 725 728 167.9
D 13 235 3282633 21970.64 620 601 149.4
D 8 112 105491 702.16 620 601 149.4
D 13 239 78365 520.57 620 601 149.4

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