ASTROSAT CZTI

Data Quality Report

Orbit 08989

Creation date: 2024-06-27T15:39:45.603327
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/AS1A03_025T08_9000001248_08989cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08989cztM0_level2_quad_clean.evt
Size (bytes)606,268,80085,089,600
Size578.2 MB 81.1 MB
Events in quadrant A3,768,368557,785
Events in quadrant B4,961,204519,459
Events in quadrant C5,686,907497,431
Events in quadrant D3,489,005533,216

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150233
B0188792
C0212392
D0145712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67181582.351890%
B671871110.583507%
C671899814.855612%
D67181482.203037%

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 9223 6718 4 4 0.04% 0.06%
B 9223 6718 330 330 3.58% 4.91%
C 9222 6718 651 651 7.06% 9.69%
D 9223 6718 17 17 0.18% 0.25%

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 8 5 348870 1937.08 887 870 179.7
A 0 226 8262 41.15 887 870 179.7
A 12 194 7401 36.35 887 870 179.7
B 10 16 1180575 7364.63 841 824 160.2
B 12 32 462902 2884.53 841 824 160.2
B 4 173 24479 147.67 841 824 160.2
C 4 254 2555832 13742.59 799 805 185.9
C 4 238 11072 55.22 799 805 185.9
C 13 61 6169 28.85 799 805 185.9
D 1 52 130259 615.54 851 829 210.3
D 7 71 40214 187.31 851 829 210.3
D 9 101 27082 124.85 851 829 210.3

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