ASTROSAT CZTI

Data Quality Report

Orbit 25797

Creation date: 2024-06-27T19:21:32.766216
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/AS1A07_068T01_9000003756_25797cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25797cztM0_level2_quad_clean.evt
Size (bytes)500,031,36087,540,480
Size476.9 MB 83.5 MB
Events in quadrant A3,548,044557,364
Events in quadrant B3,389,849565,973
Events in quadrant C3,312,622533,356
Events in quadrant D4,424,083512,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147690
B0143110
C0141970
D0175380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6901530.768005%
B6900500.724638%
C6900640.927536%
D69002313.347826%

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 7666 6902 16 16 0.21% 0.23%
B 7665 6901 1 1 0.01% 0.01%
C 7665 6900 0 0 0.00% 0.00%
D 7665 6901 198 198 2.58% 2.87%

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 249273 1443.9 854 838 172.1
A 13 254 9716 51.6 854 838 172.1
A 3 137 8004 41.65 854 838 172.1
B 12 111 20188 118.23 850 828 163.7
B 4 171 19714 115.33 850 828 163.7
B 0 219 19559 114.39 850 828 163.7
C 14 238 129815 682.29 809 812 189.1
C 3 233 26374 135.2 809 812 189.1
C 13 61 5581 25.22 809 812 189.1
D 1 52 511416 2649.71 805 787 192.7
D 8 195 417062 2160.1 805 787 192.7
D 13 104 313102 1620.64 805 787 192.7

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