ASTROSAT CZTI

Data Quality Report

Orbit 19306

Creation date: 2024-06-27T18:01:11.357314
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_204T01_9000002856_19306cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19306cztM0_level2_quad_clean.evt
Size (bytes)486,743,04092,643,840
Size464.2 MB 88.4 MB
Events in quadrant A3,371,093605,259
Events in quadrant B3,451,421606,370
Events in quadrant C3,350,273572,480
Events in quadrant D4,121,788562,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143143
B0143572
C0140622
D0164362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6581691.048473%
B6581650.987692%
C6581721.094059%
D65812263.434129%

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 7746 6581 4 4 0.05% 0.06%
B 7746 6581 4 4 0.05% 0.06%
C 7746 6581 0 0 0.00% 0.00%
D 7746 6581 137 137 1.77% 2.08%

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 4 2 35527 201.49 866 848 172.1
A 0 226 7603 39.25 866 848 172.1
A 3 137 6828 34.74 866 848 172.1
B 3 64 35825 217.01 850 830 161.3
B 15 19 33862 204.84 850 830 161.3
B 12 111 19451 115.47 850 830 161.3
C 14 238 127594 665.74 817 822 190.4
C 3 247 21745 109.88 817 822 190.4
C 9 54 8658 41.15 817 822 190.4
D 7 238 561234 2798.46 826 801 200.3
D 11 176 177226 880.96 826 801 200.3
D 1 52 86407 427.46 826 801 200.3

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