ASTROSAT CZTI

Data Quality Report

Orbit 17185

Creation date: 2024-06-27T17:33:19.824276
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_185T04_9000002548_17185cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17185cztM0_level2_quad_clean.evt
Size (bytes)503,023,68084,888,000
Size479.7 MB 81.0 MB
Events in quadrant A3,583,609519,567
Events in quadrant B3,794,540519,291
Events in quadrant C3,605,085499,747
Events in quadrant D3,731,198499,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158092
B0162722
C0157442
D0165852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76411031.347991%
B76411922.512760%
C76411491.950007%
D7641871.138594%

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 7951 7642 0 0 0.00% 0.00%
B 7951 7642 37 37 0.47% 0.48%
C 7951 7642 0 0 0.00% 0.00%
D 7951 7642 26 26 0.33% 0.34%

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 12 189 48200 255.69 914 894 185.0
A 9 143 11705 58.43 914 894 185.0
A 12 96 8648 41.91 914 894 185.0
B 0 219 150481 847.8 913 887 176.4
B 0 244 28262 155.14 913 887 176.4
B 12 111 20978 113.86 913 887 176.4
C 14 238 135428 646.79 881 886 208.0
C 3 233 32345 151.24 881 886 208.0
C 13 61 6414 26.58 881 886 208.0
D 5 222 184725 830.95 891 865 221.3
D 12 233 101839 456.35 891 865 221.3
D 10 70 38467 169.94 891 865 221.3

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