ASTROSAT CZTI

Data Quality Report

Orbit 08661

Creation date: 2024-06-27T15:35:36.903273
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/AS1G07_024T01_9000001206_08661cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08661cztM0_level2_quad_clean.evt
Size (bytes)499,118,400126,849,600
Size476.0 MB 121.0 MB
Events in quadrant A3,229,005830,460
Events in quadrant B3,840,609855,707
Events in quadrant C3,203,733846,745
Events in quadrant D4,347,522801,995

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015186299
B016637329
C015221289
D018022316

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01502
B01502
C01502
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72711131.554119%
B72801992.733516%
C7276680.934579%
D72831331.826171%

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 7720 7364 3 3 0.04% 0.04%
B 7720 7377 60 60 0.78% 0.81%
C 7720 7367 13 13 0.17% 0.18%
D 7720 7369 14 14 0.18% 0.19%

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 5 75013 443.01 814 794 167.5
A 15 174 11064 61.3 814 794 167.5
A 0 226 7586 40.54 814 794 167.5
B 4 48 375686 2394.17 823 803 156.6
B 10 16 116412 738.33 823 803 156.6
B 0 168 35595 222.2 823 803 156.6
C 4 254 82108 439.61 794 797 185.0
C 1 16 20114 104.44 794 797 185.0
C 13 61 6000 28.13 794 797 185.0
D 13 137 1096413 5695.32 790 765 192.4
D 7 71 71569 368.05 790 765 192.4
D 2 152 44673 228.24 790 765 192.4

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