ASTROSAT CZTI

Data Quality Report

Orbit 26240

Creation date: 2024-06-27T19:26:29.400806
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/AS1A09_079T03_9000003790_26240cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26240cztM0_level2_quad_clean.evt
Size (bytes)455,477,76097,444,800
Size434.4 MB 92.9 MB
Events in quadrant A3,216,257624,075
Events in quadrant B3,238,083643,009
Events in quadrant C3,357,617629,238
Events in quadrant D3,549,424610,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137690
B0139080
C0142410
D0148800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6369410.643743%
B6369460.722248%
C6369911.428796%
D63691001.570105%

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 7544 6370 1 1 0.01% 0.02%
B 7544 6370 1 1 0.01% 0.02%
C 7544 6370 6 6 0.08% 0.09%
D 7544 6370 54 54 0.72% 0.85%

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 0 13 86622 533.2 808 793 161.0
A 13 254 11044 63.68 808 793 161.0
A 3 137 7134 39.39 808 793 161.0
B 0 230 28071 177.41 814 795 153.7
B 5 172 23943 150.56 814 795 153.7
B 12 111 17790 110.54 814 795 153.7
C 14 238 125582 676.32 792 797 184.5
C 2 16 83328 447.31 792 797 184.5
C 3 233 48665 259.44 792 797 184.5
D 1 52 368921 1949.24 792 777 188.9
D 12 233 80819 423.8 792 777 188.9
D 2 234 28692 147.8 792 777 188.9

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