ASTROSAT CZTI

Data Quality Report

Orbit 09142

Creation date: 2024-06-27T15:41:51.167886
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/AS1A03_033T01_9000001276_09142cztM0_level2.evt modeM0/AS1A03_033T01_9000001276_09142cztM0_level2_quad_clean.evt
Size (bytes)473,863,68079,499,520
Size451.9 MB 75.8 MB
Events in quadrant A3,980,530493,440
Events in quadrant B3,310,552494,339
Events in quadrant C2,989,908487,386
Events in quadrant D3,627,058477,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163502
B0141951
C0134101
D0153631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65271181.807875%
B6527751.149073%
C6527550.842654%
D65272233.416577%

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 7462 6527 36 36 0.48% 0.55%
B 7462 6527 6 6 0.08% 0.09%
C 7462 6527 6 6 0.08% 0.09%
D 7462 6527 121 121 1.62% 1.85%

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 8 5 795917 5135.64 769 754 154.8
A 13 251 98375 630.49 769 754 154.8
A 1 162 68256 435.97 769 754 154.8
B 4 48 160172 1080.0 774 756 147.6
B 0 230 41810 278.13 774 756 147.6
B 0 246 29689 196.01 774 756 147.6
C 14 234 46079 259.01 750 752 175.0
C 9 68 15582 84.74 750 752 175.0
C 13 61 5746 28.54 750 752 175.0
D 12 233 470022 2552.43 751 727 183.9
D 7 71 87290 470.8 751 727 183.9
D 1 52 75377 406.01 751 727 183.9

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