ASTROSAT CZTI

Data Quality Report

Orbit 27873

Creation date: 2024-06-27T19:45:26.408263
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/AS1A10_002T05_9000004024_27873cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27873cztM0_level2_quad_clean.evt
Size (bytes)516,614,40073,935,360
Size492.7 MB 70.5 MB
Events in quadrant A3,408,145453,134
Events in quadrant B4,286,818438,876
Events in quadrant C3,744,744428,022
Events in quadrant D3,727,588427,527

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144660
B0170380
C0152730
D0158020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7054560.793876%
B70551572.225372%
C70551281.814316%
D7055781.105599%

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 8689 7055 0 0 0.00% 0.00%
B 8690 7055 41 41 0.47% 0.58%
C 8690 7056 5 5 0.06% 0.07%
D 8690 7056 42 42 0.48% 0.60%

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 11831 61.16 883 863 179.3
A 3 137 8551 42.87 883 863 179.3
A 0 226 7520 37.12 883 863 179.3
B 10 245 830900 4945.86 871 847 167.8
B 12 111 21074 120.52 871 847 167.8
B 0 190 19449 110.84 871 847 167.8
C 3 233 337978 1712.66 838 843 196.8
C 14 238 134781 680.41 838 843 196.8
C 13 61 5782 25.09 838 843 196.8
D 1 52 321154 1595.91 847 824 200.7
D 2 250 115777 572.71 847 824 200.7
D 12 233 33470 162.65 847 824 200.7

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