ASTROSAT CZTI

Data Quality Report

Orbit 09121

Creation date: 2024-06-27T15:41:33.558126
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/AS1A03_105T01_9000001268_09121cztM0_level2.evt modeM0/AS1A03_105T01_9000001268_09121cztM0_level2_quad_clean.evt
Size (bytes)496,488,96079,251,840
Size473.5 MB 75.6 MB
Events in quadrant A4,438,661480,097
Events in quadrant B3,394,890490,157
Events in quadrant C3,214,785478,124
Events in quadrant D3,515,621466,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176063
B0144522
C0142972
D0151692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69512103.021148%
B69511251.798302%
C6951630.906344%
D69511091.568120%

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 7736 6951 41 41 0.53% 0.59%
B 7736 6951 1 1 0.01% 0.01%
C 7736 6951 0 0 0.00% 0.00%
D 7736 6951 20 20 0.26% 0.29%

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 8 5 986076 5693.46 852 836 173.0
A 4 2 69821 398.65 852 836 173.0
A 1 162 43354 245.7 852 836 173.0
B 0 214 56571 333.21 856 837 167.3
B 12 111 18826 107.55 856 837 167.3
B 11 111 15368 86.87 856 837 167.3
C 13 61 6246 28.34 822 826 191.2
C 14 67 4451 18.95 822 826 191.2
C 12 4 3370 13.3 822 826 191.2
D 1 52 194379 952.06 824 803 203.3
D 2 14 89375 435.62 824 803 203.3
D 2 234 24671 117.39 824 803 203.3

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