ASTROSAT CZTI

Data Quality Report

Orbit 26804

Creation date: 2024-06-27T19:33:08.300211
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_079T01_9000003864_26804cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26804cztM0_level2_quad_clean.evt
Size (bytes)499,340,160119,854,080
Size476.2 MB 114.3 MB
Events in quadrant A4,140,581783,904
Events in quadrant B3,556,538813,120
Events in quadrant C3,531,925788,250
Events in quadrant D3,435,719774,593

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168980
B0148950
C0146880
D0146970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6743620.919472%
B67441091.616251%
C67431251.853774%
D6743560.830491%

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 8843 6745 5 5 0.06% 0.07%
B 8844 6745 21 21 0.24% 0.31%
C 8843 6745 24 24 0.27% 0.36%
D 8843 6745 15 15 0.17% 0.22%

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 0 13 932763 5606.78 829 813 166.2
A 13 254 10665 59.27 829 813 166.2
A 12 96 8184 44.35 829 813 166.2
B 0 229 192668 1223.09 836 815 156.9
B 0 189 37369 233.04 836 815 156.9
B 10 246 27421 169.62 836 815 156.9
C 15 208 193507 1020.35 817 822 188.8
C 14 238 132028 694.79 817 822 188.8
C 8 128 12665 62.71 817 822 188.8
D 2 250 82029 422.31 818 799 192.3
D 15 21 81914 421.71 818 799 192.3
D 1 52 73600 378.49 818 799 192.3

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