ASTROSAT CZTI

Data Quality Report

Orbit 47777

Creation date: 2024-07-29T08:51:58.075115
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/AS1C09_004T02_9000006348_47777cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47777cztM0_level2_quad_clean.evt
Size (bytes)486,411,840109,981,440
Size463.9 MB 104.9 MB
Events in quadrant A7,068,518715,228
Events in quadrant B3,205,410751,069
Events in quadrant C3,084,805727,216
Events in quadrant D4,114,599658,987

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254902
B0144122
C0143832
D0173182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68552804.084610%
B6856881.283547%
C6856490.714702%
D68562463.588098%

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 8860 6857 47 47 0.53% 0.69%
B 8861 6858 20 20 0.23% 0.29%
C 8861 6858 16 16 0.18% 0.23%
D 8861 6858 191 191 2.16% 2.79%

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 4151245 27021.85 743 727 153.6
A 13 6 19385 121.47 743 727 153.6
A 14 248 9390 56.4 743 727 153.6
B 5 32 127090 864.5 752 727 146.2
B 0 200 53674 362.23 752 727 146.2
B 12 111 18763 123.39 752 727 146.2
C 12 2 170080 967.98 740 744 174.9
C 14 254 10142 53.72 740 744 174.9
C 4 254 8370 43.59 740 744 174.9
D 2 249 343899 1884.52 729 704 182.1
D 2 37 330661 1811.82 729 704 182.1
D 7 67 324299 1776.89 729 704 182.1

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