ASTROSAT CZTI

Data Quality Report

Orbit 13825

Creation date: 2024-06-27T16:46:35.523720
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/AS1A04_199T01_9000002040_13825cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13825cztM0_level2_quad_clean.evt
Size (bytes)544,201,92066,767,040
Size519.0 MB 63.7 MB
Events in quadrant A3,288,334395,057
Events in quadrant B3,727,314400,094
Events in quadrant C3,260,332391,466
Events in quadrant D5,742,277358,771

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140843
B0152942
C0140632
D0217642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6833721.053710%
B68331301.902532%
C6833470.687838%
D68333324.858774%

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 7794 6835 0 0 0.00% 0.00%
B 7794 6835 16 16 0.21% 0.23%
C 7794 6835 0 0 0.00% 0.00%
D 7794 6834 243 243 3.12% 3.56%

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 1 162 19345 106.97 845 826 173.1
A 0 226 7938 41.08 845 826 173.1
A 1 178 6702 33.94 845 826 173.1
B 0 219 359726 2220.35 847 829 161.6
B 4 80 26263 157.35 847 829 161.6
B 12 111 19189 113.59 847 829 161.6
C 3 233 65615 342.38 817 823 189.2
C 13 61 5800 26.3 817 823 189.2
C 4 175 5791 26.25 817 823 189.2
D 10 157 1681888 8341.77 796 776 201.5
D 13 122 662725 3284.63 796 776 201.5
D 1 52 162864 804.29 796 776 201.5

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