ASTROSAT CZTI

Data Quality Report

Orbit 22294

Creation date: 2024-06-27T18:39:07.464254
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_018T08_9000003296_22294cztM0_level2.evt modeM0/AS1A07_018T08_9000003296_22294cztM0_level2_quad_clean.evt
Size (bytes)478,635,84092,692,800
Size456.5 MB 88.4 MB
Events in quadrant A3,401,766590,716
Events in quadrant B3,518,044600,911
Events in quadrant C3,398,791567,337
Events in quadrant D3,695,622554,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145502
B0147822
C0145492
D0155792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7082731.030782%
B70821161.637955%
C70821091.539113%
D7082821.157865%

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 7652 7083 1 1 0.01% 0.01%
B 7652 7083 2 2 0.03% 0.03%
C 7652 7083 0 0 0.00% 0.00%
D 7652 7083 40 40 0.52% 0.56%

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 9154 46.62 881 863 177.9
A 3 137 7511 37.38 881 863 177.9
A 0 226 7474 37.17 881 863 177.9
B 3 64 64144 374.56 875 851 169.0
B 12 111 20661 117.23 875 851 169.0
B 11 111 18589 104.97 875 851 169.0
C 14 238 133012 678.97 837 843 194.7
C 13 61 5859 25.77 837 843 194.7
C 0 10 2330 7.64 837 843 194.7
D 1 52 386006 1872.63 847 822 205.7
D 13 172 62106 297.94 847 822 205.7
D 2 234 27102 127.76 847 822 205.7

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