ASTROSAT CZTI

Data Quality Report

Orbit 19695

Creation date: 2024-06-27T18:06:19.314262
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_176T04_9000002942_19695cztM0_level2.evt modeM0/AS1A05_176T04_9000002942_19695cztM0_level2_quad_clean.evt
Size (bytes)451,581,12097,560,000
Size430.7 MB 93.0 MB
Events in quadrant A3,050,704637,414
Events in quadrant B3,202,625643,012
Events in quadrant C3,231,636622,200
Events in quadrant D3,747,289596,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135242
B0139022
C0140302
D0157272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6533370.566355%
B6533640.979642%
C6533861.316394%
D65332704.132864%

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 7418 6534 2 2 0.03% 0.03%
B 7418 6534 12 12 0.16% 0.18%
C 7418 6534 0 0 0.00% 0.00%
D 7418 6534 235 235 3.17% 3.60%

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 5 16 42696 268.41 776 759 156.2
A 11 47 24885 154.41 776 759 156.2
A 0 226 6859 39.04 776 759 156.2
B 7 220 63909 426.76 771 749 148.0
B 0 197 33314 220.04 771 749 148.0
B 0 190 25003 163.88 771 749 148.0
C 3 233 154825 874.54 749 754 176.2
C 14 238 115163 649.41 749 754 176.2
C 8 208 24292 133.61 749 754 176.2
D 7 238 742621 4081.78 748 726 181.8
D 1 52 86040 469.38 748 726 181.8
D 2 16 60345 328.01 748 726 181.8

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