ASTROSAT CZTI

Data Quality Report

Orbit 47662

Creation date: 2024-07-21T14:55:48.938843
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_082T01_9000006342_47662cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47662cztM0_level2_quad_clean.evt
Size (bytes)434,831,04099,676,800
Size414.7 MB 95.1 MB
Events in quadrant A6,159,122657,647
Events in quadrant B3,061,600684,236
Events in quadrant C2,700,625660,205
Events in quadrant D3,713,533600,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227441
B0129011
C0122801
D0151851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59391943.266543%
B5940971.632997%
C5940500.841751%
D59401582.659933%

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 7069 5940 36 36 0.51% 0.61%
B 7070 5941 18 18 0.25% 0.30%
C 7070 5941 11 11 0.16% 0.19%
D 7070 5941 105 105 1.49% 1.77%

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 3292713 23007.76 684 668 143.1
A 9 191 203488 1417.49 684 668 143.1
A 13 6 16913 113.53 684 668 143.1
B 5 172 145609 1076.92 681 661 134.6
B 5 255 68602 504.78 681 661 134.6
B 0 200 61329 450.75 681 661 134.6
C 14 254 30454 186.82 673 677 159.4
C 12 249 19266 116.63 673 677 159.4
C 12 2 17052 102.74 673 677 159.4
D 2 249 617832 3653.73 678 659 168.9
D 12 2 422746 2498.8 678 659 168.9
D 2 234 28799 166.59 678 659 168.9

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