ASTROSAT CZTI

Data Quality Report

Orbit 12143

Creation date: 2024-06-27T16:22:59.373273
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/AS1G08_065T01_9000001796_12143cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12143cztM0_level2_quad_clean.evt
Size (bytes)513,483,84071,936,640
Size489.7 MB 68.6 MB
Events in quadrant A3,552,218442,695
Events in quadrant B4,656,173431,979
Events in quadrant C3,302,196432,119
Events in quadrant D3,604,048422,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146893
B0182832
C0137932
D0149142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64281201.866833%
B64283886.036092%
C6428681.057872%
D6428941.462352%

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 7734 6430 10 10 0.13% 0.16%
B 7734 6430 158 158 2.04% 2.46%
C 7734 6430 0 0 0.00% 0.00%
D 7734 6430 9 9 0.12% 0.14%

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 35608 200.82 877 864 173.0
A 15 239 34710 195.63 877 864 173.0
A 13 248 30948 173.89 877 864 173.0
B 4 239 746972 4780.05 850 834 156.1
B 3 64 243390 1553.91 850 834 156.1
B 11 51 129158 822.09 850 834 156.1
C 13 61 6191 27.97 844 851 190.9
C 15 208 4139 17.22 844 851 190.9
C 4 175 3577 14.28 844 851 190.9
D 8 195 131845 655.45 848 825 199.9
D 13 104 75818 375.16 848 825 199.9
D 1 52 69477 343.44 848 825 199.9

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