ASTROSAT CZTI

Data Quality Report

Orbit 18117

Creation date: 2024-06-27T17:45:10.339632
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_019T01_9000002688_18117cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18117cztM0_level2_quad_clean.evt
Size (bytes)551,338,56074,004,480
Size525.8 MB 70.6 MB
Events in quadrant A3,380,606462,777
Events in quadrant B3,470,339466,745
Events in quadrant C3,401,291443,586
Events in quadrant D5,972,665382,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143932
B0145792
C0144302
D0222872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6957490.704327%
B6958701.006036%
C6958821.178500%
D695894513.581489%

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 8882 6959 1 1 0.01% 0.01%
B 8883 6960 1 1 0.01% 0.01%
C 8883 6960 1 1 0.01% 0.01%
D 8883 6959 847 847 9.54% 12.17%

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 4 2 23638 129.67 873 856 175.7
A 0 226 7662 38.74 873 856 175.7
A 3 137 6478 32.0 873 856 175.7
B 0 190 23842 136.04 873 850 169.0
B 12 111 20024 113.45 873 850 169.0
B 11 111 17547 98.79 873 850 169.0
C 14 238 129104 655.4 831 836 195.7
C 9 160 14196 68.26 831 836 195.7
C 9 176 10317 48.44 831 836 195.7
D 7 238 2344240 12081.92 796 772 194.0
D 11 176 485324 2498.14 796 772 194.0
D 1 52 45141 228.75 796 772 194.0

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