ASTROSAT CZTI

Data Quality Report

Orbit 04268

Creation date: 2024-06-27T14:39:35.730100
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/AS1G05_240T01_9000000536_04268cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04268cztM0_level2_quad_clean.evt
Size (bytes)1,315,091,520178,813,440
Size1.2 GB 170.5 MB
Events in quadrant A8,093,4051,092,758
Events in quadrant B13,355,1671,077,790
Events in quadrant C7,671,5801,062,611
Events in quadrant D9,586,0681,035,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348164
B0514636
C0345633
D0398663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166291370.823862%
B166282731.641809%
C166291400.841903%
D166293572.146852%

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 19994 16631 8 8 0.04% 0.05%
B 19994 16630 16 16 0.08% 0.10%
C 19994 16631 47 47 0.24% 0.28%
D 19994 16630 249 249 1.25% 1.50%

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 8 15 235663 587.18 1972 1929 398.1
A 0 50 191893 477.22 1972 1929 398.1
A 0 199 58013 140.89 1972 1929 398.1
B 3 0 5318941 14294.17 1963 1925 372.0
B 5 184 138186 366.32 1963 1925 372.0
B 8 3 88336 232.31 1963 1925 372.0
C 9 144 229344 518.74 1890 1903 438.4
C 10 65 18341 37.49 1890 1903 438.4
C 13 61 15533 31.09 1890 1903 438.4
D 2 232 788869 1709.24 1900 1852 460.4
D 13 239 652685 1413.47 1900 1852 460.4
D 2 136 322239 695.81 1900 1852 460.4

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