ASTROSAT CZTI

Data Quality Report

Orbit 45981

Creation date: 2024-06-27T23:18:26.363859
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_017T01_9000006148_45981cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45981cztM0_level2_quad_clean.evt
Size (bytes)507,657,600107,899,200
Size484.1 MB 102.9 MB
Events in quadrant A6,463,554707,959
Events in quadrant B5,423,481720,376
Events in quadrant C2,877,311739,071
Events in quadrant D3,542,533663,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235714
B0203822
C0130222
D0148382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62553595.739408%
B62555438.681055%
C6255250.399680%
D6255881.406875%

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 7495 6255 200 200 2.67% 3.20%
B 7495 6255 299 299 3.99% 4.78%
C 7495 6255 12 12 0.16% 0.19%
D 7495 6255 80 80 1.07% 1.28%

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 2759664 18988.97 703 690 145.3
A 15 223 971077 6678.8 703 690 145.3
A 13 254 8455 53.44 703 690 145.3
B 3 112 2571986 19150.78 703 684 134.3
B 5 255 60015 441.89 703 684 134.3
B 5 250 18802 134.94 703 684 134.3
C 14 254 98945 589.51 712 715 166.6
C 13 61 4840 24.76 712 715 166.6
C 3 233 3409 16.17 712 715 166.6
D 1 52 335909 1919.06 699 676 174.7
D 1 47 283833 1620.95 699 676 174.7
D 2 249 99438 565.37 699 676 174.7

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