ASTROSAT CZTI

Data Quality Report

Orbit 18731

Creation date: 2024-06-27T17:54:01.918805
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_072T04_9000002802_18731cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18731cztM0_level2_quad_clean.evt
Size (bytes)497,214,72069,246,720
Size474.2 MB 66.0 MB
Events in quadrant A3,378,794416,275
Events in quadrant B4,275,990416,160
Events in quadrant C3,446,510408,101
Events in quadrant D3,517,100404,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139972
B0169512
C0140652
D0145992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480701.080247%
B64801812.793210%
C64801171.805556%
D6480881.358025%

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 7750 6481 0 0 0.00% 0.00%
B 7750 6481 56 56 0.72% 0.86%
C 7750 6481 0 0 0.00% 0.00%
D 7750 6481 24 24 0.31% 0.37%

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 11376 60.01 875 860 175.2
A 0 226 7538 38.11 875 860 175.2
A 3 137 6430 31.79 875 860 175.2
B 10 245 805186 4971.99 860 843 161.8
B 7 220 29816 179.09 860 843 161.8
B 0 197 23164 137.98 860 843 161.8
C 14 238 130922 673.98 840 850 193.0
C 3 233 21703 108.05 840 850 193.0
C 0 207 16676 82.0 840 850 193.0
D 10 70 153334 738.48 856 833 206.5
D 7 238 72884 348.91 856 833 206.5
D 2 234 28786 135.36 856 833 206.5

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