ASTROSAT CZTI

Data Quality Report

Orbit 37342

Creation date: 2024-06-27T21:38:45.341339
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/AS1C07_014T01_9000005314_37342cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37342cztM0_level2_quad_clean.evt
Size (bytes)479,615,04089,712,000
Size457.4 MB 85.6 MB
Events in quadrant A2,992,240599,404
Events in quadrant B3,171,722601,707
Events in quadrant C3,511,443567,136
Events in quadrant D4,476,680563,790

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124063
B0128912
C0137372
D0169802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497400.727670%
B54971202.183009%
C54972865.202838%
D54974908.913953%

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 7140 5498 19 19 0.27% 0.35%
B 7140 5498 76 76 1.06% 1.38%
C 7140 5498 127 127 1.78% 2.31%
D 7140 5498 404 404 5.66% 7.35%

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 289082 2173.53 651 642 132.7
A 13 248 79449 593.85 651 642 132.7
A 15 237 62652 467.27 651 642 132.7
B 5 172 244656 1918.26 649 632 127.2
B 4 171 127803 999.68 649 632 127.2
B 5 255 70627 550.23 649 632 127.2
C 14 254 523056 3604.89 613 620 144.9
C 15 214 223923 1540.83 613 620 144.9
C 3 233 173874 1195.48 613 620 144.9
D 12 227 720712 4732.49 610 592 152.2
D 12 235 598489 3929.27 610 592 152.2
D 2 249 465753 3056.95 610 592 152.2

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