ASTROSAT CZTI

Data Quality Report

Orbit 35796

Creation date: 2022-05-13T16:10:57.298707
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_029T09_9000005138_35796cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35796cztM0_level2_quad_clean.evt
Size (bytes)247,973,76066,274,560
Size236.5 MB 63.2 MB
Events in quadrant A1,783,379455,854
Events in quadrant B1,835,076454,727
Events in quadrant C1,758,105443,347
Events in quadrant D1,918,304429,309

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072461
B073821
C071551
D077001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314140.127348%
B3141401.273480%
C3141491.560013%
D3142461.464036%

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 3141 3141 1 1 0.03% 0.03%
B 3141 3141 30 30 0.96% 0.96%
C 3141 3141 41 41 1.31% 1.31%
D 3142 3142 36 36 1.15% 1.15%

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 15 169 169234 2124.49 395 388 79.5
A 10 83 87615 1097.52 395 388 79.5
A 13 6 3930 44.57 395 388 79.5
B 0 213 73822 1008.44 383 374 72.8
B 0 229 63742 870.05 383 374 72.8
B 4 232 53063 723.42 383 374 72.8
C 0 10 144270 1673.99 372 375 86.0
C 15 214 132822 1540.82 372 375 86.0
C 0 207 25781 295.56 372 375 86.0
D 10 199 136088 1486.68 381 372 91.3
D 13 249 128449 1403.0 381 372 91.3
D 12 6 40681 441.56 381 372 91.3

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