ASTROSAT CZTI

Data Quality Report

Orbit 23422

Creation date: 2024-06-27T18:54:21.510390
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/AS1A07_138T04_9000003462_23422cztM0_level2.evt modeM0/AS1A07_138T04_9000003462_23422cztM0_level2_quad_clean.evt
Size (bytes)503,527,68085,875,840
Size480.2 MB 81.9 MB
Events in quadrant A3,470,715541,124
Events in quadrant B3,678,943546,706
Events in quadrant C3,588,119521,904
Events in quadrant D4,046,739513,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143292
B0149592
C0146142
D0162212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68431502.192021%
B68431702.484291%
C68431842.688879%
D68422163.156972%

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 7843 6843 0 0 0.00% 0.00%
B 7843 6843 7 7 0.09% 0.10%
C 7843 6843 0 0 0.00% 0.00%
D 7842 6842 84 84 1.07% 1.23%

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 10039 51.1 900 880 179.2
A 0 226 7750 38.33 900 880 179.2
A 3 137 7501 36.94 900 880 179.2
B 0 189 114986 683.2 887 866 167.0
B 0 190 37199 217.51 887 866 167.0
B 15 33 23125 133.25 887 866 167.0
C 14 238 137877 703.27 850 856 194.8
C 10 9 128423 654.75 850 856 194.8
C 13 61 5985 26.32 850 856 194.8
D 1 52 446780 2120.35 870 844 210.3
D 12 233 69551 326.69 870 844 210.3
D 7 38 57057 267.28 870 844 210.3

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