ASTROSAT CZTI

Data Quality Report

Orbit 16524

Creation date: 2024-06-27T17:23:55.858259
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_174T01_9000002440_16524cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16524cztM0_level2_quad_clean.evt
Size (bytes)469,368,00089,876,160
Size447.6 MB 85.7 MB
Events in quadrant A3,567,561565,349
Events in quadrant B3,568,298576,602
Events in quadrant C3,488,920553,924
Events in quadrant D3,124,140548,349

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150763
B0149362
C0147742
D0140982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68571812.639638%
B68571892.756307%
C68571602.333382%
D68571011.472947%

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 8463 6858 35 35 0.41% 0.51%
B 8463 6858 11 11 0.13% 0.16%
C 8463 6858 0 0 0.00% 0.00%
D 8463 6858 0 0 0.00% 0.00%

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 327722 1915.97 841 822 170.6
A 0 226 7437 38.77 841 822 170.6
A 15 223 7327 38.13 841 822 170.6
B 15 35 80876 486.28 838 815 164.6
B 4 173 57020 341.38 838 815 164.6
B 4 48 45920 273.96 838 815 164.6
C 3 233 227469 1199.61 802 806 188.9
C 14 238 123451 649.1 802 806 188.9
C 7 247 12956 64.3 802 806 188.9
D 2 234 27902 135.89 817 792 199.5
D 15 0 13623 64.32 817 792 199.5
D 1 52 9232 42.31 817 792 199.5

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