ASTROSAT CZTI

Data Quality Report

Orbit 40417

Creation date: 2024-06-27T22:15:50.815675
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/AS1A12_022T01_9000005540_40417cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40417cztM0_level2_quad_clean.evt
Size (bytes)351,757,44096,678,720
Size335.5 MB 92.2 MB
Events in quadrant A3,025,430682,963
Events in quadrant B3,099,811700,620
Events in quadrant C2,647,088654,892
Events in quadrant D3,844,001525,598

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122143
B0123582
C0107172
D0148302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5190250.481696%
B5190210.404624%
C5190110.211946%
D519085416.454721%

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 7284 5191 13 13 0.18% 0.25%
B 7284 5191 11 11 0.15% 0.21%
C 7284 5191 4 4 0.05% 0.08%
D 7283 5190 170 170 2.33% 3.28%

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 474157 3748.39 628 617 126.3
A 13 248 104644 823.44 628 617 126.3
A 2 79 13351 100.8 628 617 126.3
B 7 202 486236 4157.58 621 606 116.8
B 4 170 76570 650.34 621 606 116.8
B 5 255 60730 514.73 621 606 116.8
C 15 214 226242 1622.08 609 614 139.1
C 14 254 29207 205.56 609 614 139.1
C 0 10 17239 119.52 609 614 139.1
D 2 250 460204 3319.14 568 552 138.5
D 13 171 343139 2473.81 568 552 138.5
D 12 227 339461 2447.25 568 552 138.5

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