ASTROSAT CZTI

Data Quality Report

Orbit 46658

Creation date: 2024-06-27T23:26:01.204216
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_039T01_9000006246_46658cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46658cztM0_level2_quad_clean.evt
Size (bytes)486,622,080109,425,600
Size464.1 MB 104.4 MB
Events in quadrant A6,547,194751,306
Events in quadrant B3,982,477753,506
Events in quadrant C3,065,161698,552
Events in quadrant D3,912,724655,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240701
B0164682
C0140551
D0162721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65212033.113019%
B65201582.423313%
C6521791.211471%
D65211692.591627%

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 7426 6522 82 82 1.10% 1.26%
B 7425 6521 65 65 0.88% 1.00%
C 7426 6522 53 53 0.71% 0.81%
D 7426 6522 108 108 1.45% 1.66%

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 3582730 23863.85 716 703 150.1
A 15 235 110572 731.96 716 703 150.1
A 0 243 22446 144.85 716 703 150.1
B 0 189 592159 4226.15 712 692 140.0
B 4 171 138600 985.38 712 692 140.0
B 12 3 109327 776.22 712 692 140.0
C 14 254 194928 1185.84 693 697 163.8
C 0 207 35941 215.17 693 697 163.8
C 12 250 32005 191.14 693 697 163.8
D 1 52 529694 3024.24 698 678 174.9
D 12 128 240542 1371.24 698 678 174.9
D 13 249 89024 505.05 698 678 174.9

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