ASTROSAT CZTI

Data Quality Report

Orbit 28906

Creation date: 2024-06-27T19:57:50.398716
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/AS1A10_064T01_9000004144_28906cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28906cztM0_level2_quad_clean.evt
Size (bytes)969,048,00076,337,280
Size924.2 MB 72.8 MB
Events in quadrant A3,353,170517,691
Events in quadrant B3,414,082536,728
Events in quadrant C10,431,187438,754
Events in quadrant D11,713,598365,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138482
B0140322
C0354733
D0392232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480350.540123%
B6480620.956790%
C6479231335.699954%
D6479370157.123013%

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 7799 6480 0 0 0.00% 0.00%
B 7799 6479 0 0 0.00% 0.00%
C 7798 6478 1436 1436 18.41% 22.17%
D 7798 6478 3709 3709 47.56% 57.26%

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 13 254 11490 62.62 864 850 169.9
A 3 137 7729 40.48 864 850 169.9
A 0 226 7319 38.07 864 850 169.9
B 12 111 19088 113.07 871 849 161.3
B 11 111 17348 102.29 871 849 161.3
B 14 111 16326 95.95 871 849 161.3
C 3 233 7243811 40522.03 775 780 178.7
C 14 238 133341 741.63 775 780 178.7
C 14 254 16053 85.45 775 780 178.7
D 8 195 7241540 45429.28 676 660 159.4
D 1 52 1690060 10599.3 676 660 159.4
D 13 104 222394 1391.16 676 660 159.4

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