ASTROSAT CZTI

Data Quality Report

Orbit 19075

Creation date: 2024-06-27T17:58:46.553140
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/AS1A05_046T01_9000002834_19075cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19075cztM0_level2_quad_clean.evt
Size (bytes)741,358,08092,257,920
Size707.0 MB 88.0 MB
Events in quadrant A3,235,565631,125
Events in quadrant B3,452,533652,039
Events in quadrant C3,950,069626,022
Events in quadrant D11,388,309444,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136972
B0143942
C0158242
D0381482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6292410.651621%
B6292771.223776%
C6292811.287349%
D6292352255.975842%

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 7502 6293 9 9 0.12% 0.14%
B 7502 6293 18 18 0.24% 0.29%
C 7502 6293 0 0 0.00% 0.00%
D 7502 6293 2839 2839 37.84% 45.11%

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 9 143 129992 796.05 806 790 162.3
A 13 254 8179 45.53 806 790 162.3
A 0 226 7176 39.35 806 790 162.3
B 3 112 132226 853.43 813 795 154.0
B 0 189 71471 458.92 813 795 154.0
B 7 220 26579 167.42 813 795 154.0
C 3 233 761463 4123.37 787 794 184.5
C 14 238 122889 661.84 787 794 184.5
C 13 61 5282 24.33 787 794 184.5
D 7 238 6117704 43368.09 579 564 141.1
D 1 52 2705751 19178.7 579 564 141.1
D 11 176 147534 1041.96 579 564 141.1

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