ASTROSAT CZTI

Data Quality Report

Orbit 47668

Creation date: 2024-07-22T01:25:23.710111
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/AS1A13_082T01_9000006342_47668cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47668cztM0_level2_quad_clean.evt
Size (bytes)496,788,480114,667,200
Size473.8 MB 109.4 MB
Events in quadrant A7,543,540751,876
Events in quadrant B3,456,289782,615
Events in quadrant C3,180,219749,620
Events in quadrant D3,653,942689,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274880
B0151480
C0148200
D0161380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71603064.273743%
B7161771.075269%
C7161180.251362%
D7161951.326630%

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 7160 7160 36 36 0.50% 0.50%
B 7161 7161 1 1 0.01% 0.01%
C 7161 7161 7 7 0.10% 0.10%
D 7161 7161 60 60 0.84% 0.84%

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 3923834 22799.14 817 796 172.1
A 9 191 392530 2276.6 817 796 172.1
A 13 248 32752 185.72 817 796 172.1
B 0 190 78140 477.64 817 791 161.9
B 5 172 58329 355.3 817 791 161.9
B 0 200 24359 145.53 817 791 161.9
C 14 254 47091 243.79 803 807 189.9
C 13 61 5452 24.46 803 807 189.9
C 3 233 3647 14.96 803 807 189.9
D 2 249 305750 1491.96 803 779 204.4
D 12 218 78965 382.5 803 779 204.4
D 5 171 43685 209.9 803 779 204.4

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