ASTROSAT CZTI

Data Quality Report

Orbit 02936

Creation date: 2024-06-27T14:22:26.100855
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/AS1P01_999T99_9000000414_02936cztM0_level2.evt modeM0/AS1P01_999T99_9000000414_02936cztM0_level2_quad_clean.evt
Size (bytes)1,159,655,04058,464,000
Size1.1 GB 55.8 MB
Events in quadrant A6,881,116379,685
Events in quadrant B8,892,029378,026
Events in quadrant C7,195,233369,468
Events in quadrant D11,832,190300,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239043
B0299482
C0248382
D0388062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4896881.797386%
B487970014.347202%
C48591412.901832%
D4843178836.919265%

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 6031 4896 382 382 6.33% 7.80%
B 6014 4879 1569 1569 26.09% 32.16%
C 5994 4859 609 609 10.16% 12.53%
D 5978 4843 3145 3145 52.61% 64.94%

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 0 143 81074 197.31 1743 1731 402.1
A 0 31 41421 98.7 1743 1731 402.1
A 0 149 28617 66.86 1743 1731 402.1
B 6 203 1876098 4542.59 1676 1677 412.6
B 3 27 126782 303.19 1676 1677 412.6
B 10 244 82189 195.12 1676 1677 412.6
C 7 220 244870 515.16 1606 1660 472.1
C 12 206 242420 509.97 1606 1660 472.1
C 6 80 140001 293.03 1606 1660 472.1
D 14 81 1839809 4076.77 1382 1413 450.9
D 14 97 1084236 2401.23 1382 1413 450.9
D 15 50 962898 2132.16 1382 1413 450.9

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
Veto Counter