ASTROSAT CZTI

Data Quality Report

Orbit 35858

Creation date: 2022-06-08T19:02:22.496911
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/AS1A11_080T01_9000005146_35858cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35858cztM0_level2_quad_clean.evt
Size (bytes)440,841,60073,768,320
Size420.4 MB 70.4 MB
Events in quadrant A4,351,971478,168
Events in quadrant B2,762,839478,984
Events in quadrant C2,899,279470,831
Events in quadrant D2,991,477448,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165273
B0111452
C0113122
D0120372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50902605.108055%
B5090370.726916%
C50901001.964637%
D50901092.141454%

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 7063 5091 199 199 2.82% 3.91%
B 7063 5091 25 25 0.35% 0.49%
C 7063 5091 83 83 1.18% 1.63%
D 7063 5091 82 82 1.16% 1.61%

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 15 169 1773496 14128.69 621 612 125.5
A 10 83 156142 1239.47 621 612 125.5
A 8 144 10286 77.1 621 612 125.5
B 5 172 216698 1832.19 624 610 117.9
B 0 213 55302 463.73 624 610 117.9
B 12 111 13986 113.41 624 610 117.9
C 0 10 238390 1682.17 610 616 141.3
C 15 214 212395 1498.26 610 616 141.3
C 1 23 61866 433.32 610 616 141.3
D 13 249 348821 2307.99 610 598 150.9
D 13 153 100043 659.11 610 598 150.9
D 8 195 68716 451.48 610 598 150.9

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