ASTROSAT CZTI

Data Quality Report

Orbit 03925

Creation date: 2024-06-27T14:35:18.460891
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/AS1G05_172T01_9000000502_03925cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03925cztM0_level2_quad_clean.evt
Size (bytes)444,165,12080,447,040
Size423.6 MB 76.7 MB
Events in quadrant A3,215,566493,617
Events in quadrant B3,313,493499,313
Events in quadrant C3,059,068491,325
Events in quadrant D3,396,916474,003

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143042
B0141891
C0140301
D0149101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68521552.262113%
B68521482.159953%
C68521301.897256%
D68521402.043199%

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 7557 6853 15 15 0.20% 0.22%
B 7557 6853 0 0 0.00% 0.00%
C 7557 6853 0 0 0.00% 0.00%
D 7557 6853 16 16 0.21% 0.23%

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 0 118 118103 719.36 794 775 163.1
A 0 226 18473 108.51 794 775 163.1
A 2 79 11833 67.8 794 775 163.1
B 15 204 143949 928.93 802 784 154.1
B 3 0 32469 205.59 802 784 154.1
B 0 229 25913 163.05 802 784 154.1
C 10 65 12250 63.7 774 777 180.1
C 8 128 7609 37.93 774 777 180.1
C 9 247 6506 31.81 774 777 180.1
D 9 82 129523 693.33 769 748 185.7
D 13 239 105240 562.59 769 748 185.7
D 2 232 104312 557.59 769 748 185.7

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
Veto Counter