ASTROSAT CZTI

Data Quality Report

Orbit 37225

Creation date: 2024-06-27T21:37:07.529369
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/AS1A11_079T01_9000005284_37225cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37225cztM0_level2_quad_clean.evt
Size (bytes)1,261,627,200178,200,000
Size1.2 GB 169.9 MB
Events in quadrant A8,179,2631,102,526
Events in quadrant B8,261,3391,112,643
Events in quadrant C9,222,7761,097,478
Events in quadrant D11,484,330999,429

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344715
B0351974
C0373724
D0450724

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157181540.979768%
B15718830.528057%
C157182391.520550%
D1571810326.565721%

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 21297 15722 106 106 0.50% 0.67%
B 21297 15722 33 33 0.15% 0.21%
C 21297 15722 156 156 0.73% 0.99%
D 21297 15722 831 831 3.90% 5.29%

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 10 83 648793 1779.42 1806 1769 363.6
A 15 237 408116 1117.52 1806 1769 363.6
A 13 248 53610 142.57 1806 1769 363.6
B 0 213 279792 798.35 1798 1748 348.3
B 0 190 255224 727.81 1798 1748 348.3
B 5 172 247185 704.73 1798 1748 348.3
C 14 254 1153384 2796.68 1763 1776 411.8
C 15 214 656568 1590.16 1763 1776 411.8
C 15 159 248178 598.39 1763 1776 411.8
D 2 249 1270534 3040.92 1718 1673 417.3
D 10 253 1152386 2757.77 1718 1673 417.3
D 13 249 907546 2170.99 1718 1673 417.3

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