ASTROSAT CZTI

Data Quality Report

Orbit 04959

Creation date: 2024-06-27T14:49:23.124264
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/AS1G05_140T01_9000000628_04959cztM0_level2.evt modeM0/AS1G05_140T01_9000000628_04959cztM0_level2_quad_clean.evt
Size (bytes)458,383,68068,256,000
Size437.1 MB 65.1 MB
Events in quadrant A3,106,213402,516
Events in quadrant B3,220,550402,118
Events in quadrant C3,015,775406,915
Events in quadrant D4,076,128379,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140413
B0140572
C0138202
D0169622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6820480.703812%
B6820380.557185%
C6820290.425220%
D68202433.563050%

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 7795 6821 6 6 0.08% 0.09%
B 7795 6820 1 1 0.01% 0.01%
C 7795 6821 0 0 0.00% 0.00%
D 7795 6820 207 207 2.66% 3.04%

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 0 31 64434 396.73 783 765 160.5
A 13 251 13481 79.24 783 765 160.5
A 15 234 12567 73.54 783 765 160.5
B 10 249 52750 343.9 792 774 151.1
B 15 204 42706 277.45 792 774 151.1
B 0 219 33971 219.65 792 774 151.1
C 8 128 8060 40.67 769 771 179.2
C 13 61 6255 30.6 769 771 179.2
C 8 112 3768 16.72 769 771 179.2
D 2 33 557556 3060.52 751 727 181.9
D 2 136 176831 967.93 751 727 181.9
D 13 235 171159 936.75 751 727 181.9

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