ASTROSAT CZTI

Data Quality Report

Orbit 07946

Creation date: 2024-06-27T15:25:51.850765
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/AS1G06_117T01_9000001086_07946cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07946cztM0_level2_quad_clean.evt
Size (bytes)440,674,56090,884,160
Size420.3 MB 86.7 MB
Events in quadrant A3,452,836568,025
Events in quadrant B3,189,500592,266
Events in quadrant C3,127,094588,098
Events in quadrant D3,139,524555,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146783
B0136872
C0135802
D0138072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64271342.084954%
B6427640.995799%
C6427300.466781%
D6427180.280068%

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 9067 6429 55 55 0.61% 0.86%
B 9067 6429 5 5 0.06% 0.08%
C 9067 6429 0 0 0.00% 0.00%
D 9067 6429 4 4 0.04% 0.06%

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 15 234 423672 2691.81 782 764 157.1
A 13 251 8189 47.26 782 764 157.1
A 0 226 7229 41.15 782 764 157.1
B 5 255 31794 205.4 802 783 151.0
B 10 245 26331 169.22 802 783 151.0
B 12 111 16489 104.03 802 783 151.0
C 1 16 51495 280.17 784 789 181.0
C 14 67 9376 47.45 784 789 181.0
C 13 61 5955 28.54 784 789 181.0
D 1 52 130918 694.18 771 748 187.5
D 5 233 26012 134.73 771 748 187.5
D 13 169 23064 119.01 771 748 187.5

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