ASTROSAT CZTI

Data Quality Report

Orbit 48518

Creation date: 2024-09-21T12:15:41.049245
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/AS1A13_037T05_9000006434_48518cztM0_level2.fits modeM0/AS1A13_037T05_9000006434_48518cztM0_level2_quad_clean.evt
Size (bytes)451,883,520105,399,360
Size430.9 MB 100.5 MB
Events in quadrant A7,103,675676,235
Events in quadrant B3,487,164727,581
Events in quadrant C2,734,567702,423
Events in quadrant D2,894,488629,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02561523
B0151554
C0132505
D01382512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0181
D0181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65323395.189835%
B65351532.341239%
C6535120.183627%
D6533480.734731%

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 8757 6538 164 164 1.87% 2.51%
B 8757 6538 68 68 0.78% 1.04%
C 8757 6538 0 0 0.00% 0.00%
D 8758 6538 28 28 0.32% 0.43%

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 4052545 27995.8 693 678 144.7
A 0 31 195775 1348.0 693 678 144.7
A 13 248 128601 883.87 693 678 144.7
B 12 16 410305 2978.24 705 683 137.5
B 5 255 224156 1624.81 705 683 137.5
B 8 234 34034 242.49 705 683 137.5
C 3 233 8424 46.74 697 701 165.2
C 13 61 4700 24.2 697 701 165.2
C 0 2 4692 24.15 697 701 165.2
D 2 249 148027 847.8 686 663 173.8
D 2 165 80041 456.67 686 663 173.8
D 2 234 29117 163.7 686 663 173.8

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