ASTROSAT CZTI

Data Quality Report

Orbit 16481

Creation date: 2024-06-27T17:23:20.874292
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_108T01_9000002438_16481cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16481cztM0_level2_quad_clean.evt
Size (bytes)427,541,76094,055,040
Size407.7 MB 89.7 MB
Events in quadrant A2,974,733611,581
Events in quadrant B3,302,714621,662
Events in quadrant C3,415,307588,112
Events in quadrant D2,824,115584,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131732
B0139401
C0143921
D0130511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344500.788146%
B6344681.071879%
C6344991.560530%
D6344330.520177%

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 7315 6345 3 3 0.04% 0.05%
B 7315 6345 5 5 0.07% 0.08%
C 7315 6345 4 4 0.05% 0.06%
D 7315 6345 7 7 0.10% 0.11%

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 15 174 77762 502.82 754 737 153.2
A 0 226 6633 38.49 754 737 153.2
A 3 137 5633 31.96 754 737 153.2
B 4 48 131646 903.95 752 734 144.8
B 15 35 76650 524.2 752 734 144.8
B 3 209 50298 342.24 752 734 144.8
C 3 233 418146 2483.68 711 714 168.1
C 7 247 116515 689.01 711 714 168.1
C 14 238 109378 646.54 711 714 168.1
D 2 33 45093 248.85 724 699 178.4
D 2 234 28488 155.77 724 699 178.4
D 1 52 10918 57.28 724 699 178.4

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