ASTROSAT CZTI

Data Quality Report

Orbit 09638

Creation date: 2024-06-27T15:48:44.239515
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/AS1A03_077T01_9000001372_09638cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09638cztM0_level2_quad_clean.evt
Size (bytes)502,306,56070,479,360
Size479.0 MB 67.2 MB
Events in quadrant A3,339,974427,568
Events in quadrant B3,422,666424,283
Events in quadrant C3,294,184425,547
Events in quadrant D4,703,180391,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140073
B0141742
C0139762
D0181952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670540.809595%
B6670580.869565%
C6670660.989505%
D66703965.937031%

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 9120 6672 1 1 0.01% 0.01%
B 9120 6672 0 0 0.00% 0.00%
C 9120 6671 3 3 0.03% 0.04%
D 9120 6672 314 314 3.44% 4.71%

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 13 248 35689 201.5 858 840 172.9
A 0 226 8095 41.95 858 840 172.9
A 12 194 6780 34.34 858 840 172.9
B 0 214 36990 223.24 861 841 161.9
B 12 111 17543 103.15 861 841 161.9
B 11 111 14354 83.45 861 841 161.9
C 14 234 14784 72.67 840 845 191.8
C 13 61 6347 28.68 840 845 191.8
C 14 67 3487 13.77 840 845 191.8
D 1 52 867766 4372.18 817 800 198.3
D 7 71 270053 1357.86 817 800 198.3
D 13 105 246369 1238.42 817 800 198.3

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