ASTROSAT CZTI

Data Quality Report

Orbit 23423

Creation date: 2024-06-27T18:54:22.537114
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/AS1A07_138T04_9000003462_23423cztM0_level2.evt modeM0/AS1A07_138T04_9000003462_23423cztM0_level2_quad_clean.evt
Size (bytes)473,489,28075,061,440
Size451.6 MB 71.6 MB
Events in quadrant A3,103,624463,269
Events in quadrant B3,279,899465,455
Events in quadrant C3,288,385447,403
Events in quadrant D4,226,310443,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133151
B0137551
C0136121
D0168841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6495761.170131%
B64951011.555042%
C64951221.878368%
D64963645.603448%

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 7165 6495 0 0 0.00% 0.00%
B 7165 6495 1 1 0.01% 0.02%
C 7165 6495 0 0 0.00% 0.00%
D 7166 6496 257 257 3.59% 3.96%

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 13 254 9264 51.88 803 785 163.4
A 3 137 6994 37.99 803 785 163.4
A 0 226 6965 37.82 803 785 163.4
B 0 190 56492 367.97 795 776 151.4
B 0 189 56267 366.48 795 776 151.4
B 3 209 37038 239.49 795 776 151.4
C 14 238 122317 684.3 764 768 177.6
C 10 9 112319 628.02 764 768 177.6
C 8 208 66008 367.29 764 768 177.6
D 1 52 968139 5214.4 767 745 185.5
D 12 233 117884 631.4 767 745 185.5
D 7 38 94133 503.38 767 745 185.5

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