ASTROSAT CZTI

Data Quality Report

Orbit 18728

Creation date: 2024-06-27T17:54:14.142826
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_226T06_9000002800_18728cztM0_level2.evt modeM0/AS1A05_226T06_9000002800_18728cztM0_level2_quad_clean.evt
Size (bytes)520,678,08077,950,080
Size496.6 MB 74.3 MB
Events in quadrant A3,581,047489,579
Events in quadrant B3,986,675490,307
Events in quadrant C4,281,589457,716
Events in quadrant D3,469,700460,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147062
B0160802
C0170412
D0144112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629901.357671%
B66291812.730427%
C66291682.534319%
D6629961.448182%

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 7819 6629 1 1 0.01% 0.02%
B 7819 6629 56 56 0.72% 0.84%
C 7819 6629 11 11 0.14% 0.17%
D 7819 6629 38 38 0.49% 0.57%

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 15 192 34060 185.47 908 892 178.8
A 9 143 15390 81.07 908 892 178.8
A 14 111 12037 62.32 908 892 178.8
B 10 245 439148 2599.53 892 873 168.6
B 3 64 40448 234.73 892 873 168.6
B 12 111 19748 111.95 892 873 168.6
C 3 233 828806 4206.79 848 854 196.8
C 14 238 135224 682.73 848 854 196.8
C 0 207 14231 67.97 848 854 196.8
D 7 238 124458 596.91 866 843 207.1
D 10 70 47467 225.14 866 843 207.1
D 2 234 25986 121.41 866 843 207.1

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