ASTROSAT CZTI

Data Quality Report

Orbit 32926

Creation date: 2024-06-27T20:43:32.731820
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_005T01_9000004748_32926cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32926cztM0_level2_quad_clean.evt
Size (bytes)561,467,520103,763,520
Size535.5 MB 99.0 MB
Events in quadrant A2,539,198714,481
Events in quadrant B3,305,389713,191
Events in quadrant C2,781,174706,647
Events in quadrant D8,001,065617,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113172
B0134981
C0119451
D0277031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5583120.214938%
B55831312.346409%
C5583260.465699%
D558389215.977073%

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 7225 5584 4 4 0.06% 0.07%
B 7225 5584 84 84 1.16% 1.50%
C 7225 5584 18 18 0.25% 0.32%
D 7225 5584 1001 1001 13.85% 17.93%

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 13 6 16525 120.41 647 633 132.0
A 10 248 12967 93.45 647 633 132.0
A 13 254 9966 70.71 647 633 132.0
B 5 172 259552 2108.72 645 629 122.8
B 0 199 125041 1013.24 645 629 122.8
B 10 246 106124 859.17 645 629 122.8
C 3 233 91836 630.39 625 629 144.7
C 0 10 86724 595.06 625 629 144.7
C 14 67 64026 438.18 625 629 144.7
D 8 195 3485244 23044.82 588 575 151.2
D 7 80 1091263 7212.94 588 575 151.2
D 10 203 269457 1778.17 588 575 151.2

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