ASTROSAT CZTI

Data Quality Report

Orbit 36545

Creation date: 2024-06-27T21:28:13.273519
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/AS1A11_089T02_9000005216_36545cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36545cztM0_level2_quad_clean.evt
Size (bytes)445,501,44053,686,080
Size424.9 MB 51.2 MB
Events in quadrant A2,981,181317,081
Events in quadrant B3,372,598317,378
Events in quadrant C3,289,978304,452
Events in quadrant D3,463,587290,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123683
B0137492
C0130482
D0142482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668440.776288%
B5668841.482004%
C56681662.928723%
D56681733.052223%

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 7251 5669 34 34 0.47% 0.60%
B 7251 5669 53 53 0.73% 0.93%
C 7251 5669 133 133 1.83% 2.35%
D 7251 5669 151 151 2.08% 2.66%

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 205209 1535.96 657 643 133.2
A 9 143 133460 997.24 657 643 133.2
A 15 223 95057 708.9 657 643 133.2
B 5 255 307844 2429.38 651 634 126.5
B 5 172 249664 1969.3 651 634 126.5
B 0 189 104652 822.56 651 634 126.5
C 0 10 512070 3479.51 625 629 147.0
C 15 214 239472 1624.93 625 629 147.0
C 14 254 44062 295.49 625 629 147.0
D 13 171 199745 1295.83 627 611 153.7
D 2 250 145877 945.29 627 611 153.7
D 14 35 118552 767.48 627 611 153.7

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