ASTROSAT CZTI

Data Quality Report

Orbit 21654

Creation date: 2024-06-27T18:30:42.489166
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/AS1A06_002T02_9000003206_21654cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21654cztM0_level2_quad_clean.evt
Size (bytes)488,266,56089,582,400
Size465.6 MB 85.4 MB
Events in quadrant A3,285,684582,111
Events in quadrant B3,430,431605,255
Events in quadrant C3,385,272562,878
Events in quadrant D4,260,337524,875

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136353
B0140512
C0139152
D0168452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274380.605674%
B6274701.115716%
C6275861.370518%
D62752433.872510%

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 9024 6277 1 1 0.01% 0.02%
B 9024 6277 4 4 0.04% 0.06%
C 9025 6278 0 0 0.00% 0.00%
D 9025 6278 171 171 1.89% 2.72%

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 15 236 120138 725.8 822 806 164.4
A 13 254 7875 43.0 822 806 164.4
A 0 226 7058 38.03 822 806 164.4
B 0 230 48126 310.23 830 813 152.5
B 3 64 47695 307.41 830 813 152.5
B 0 189 18101 113.36 830 813 152.5
C 9 54 155105 847.11 792 799 182.2
C 14 238 126964 692.62 792 799 182.2
C 10 22 14281 74.01 792 799 182.2
D 1 52 710648 3791.92 774 753 187.2
D 7 238 411728 2195.23 774 753 187.2
D 2 136 65618 346.48 774 753 187.2

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