ASTROSAT CZTI

Data Quality Report

Orbit 24158

Creation date: 2024-06-27T19:02:53.808355
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/AS1A07_047T06_9000003576_24158cztM0_level2.evt modeM0/AS1A07_047T06_9000003576_24158cztM0_level2_quad_clean.evt
Size (bytes)446,909,760129,064,320
Size426.2 MB 123.1 MB
Events in quadrant A2,925,591901,180
Events in quadrant B2,952,079910,013
Events in quadrant C3,359,464864,193
Events in quadrant D3,923,236847,883

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118951
B0120561
C0135071
D0152661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5513360.653002%
B5514601.088139%
C55142053.717809%
D55141612.919840%

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 6858 5514 0 0 0.00% 0.00%
B 6859 5514 6 6 0.09% 0.11%
C 6859 5515 54 54 0.79% 0.98%
D 6859 5514 115 115 1.68% 2.09%

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 13 254 9431 58.2 758 746 149.2
A 0 226 6769 40.36 758 746 149.2
A 3 137 5718 33.32 758 746 149.2
B 4 216 30495 218.73 746 732 136.1
B 12 111 15018 104.99 746 732 136.1
B 11 111 13243 91.94 746 732 136.1
C 10 9 278319 1705.75 725 732 162.7
C 14 238 120079 733.38 725 732 162.7
C 2 16 78117 475.52 725 732 162.7
D 7 238 726234 4120.51 741 721 176.1
D 8 195 211522 1197.23 741 721 176.1
D 12 233 160509 907.51 741 721 176.1

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