ASTROSAT CZTI

Data Quality Report

Orbit 30415

Creation date: 2024-06-27T20:14:57.368283
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/AS1C05_019T04_9000004376_30415cztM0_level2.evt modeM0/AS1C05_019T04_9000004376_30415cztM0_level2_quad_clean.evt
Size (bytes)551,404,800112,466,880
Size525.9 MB 107.3 MB
Events in quadrant A3,373,674739,943
Events in quadrant B5,486,658745,216
Events in quadrant C3,579,908728,876
Events in quadrant D3,790,983710,897

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147212
B0214142
C0151142
D0158812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69061331.925862%
B69061622.345786%
C69062723.938604%
D69061622.345786%

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 7611 6906 14 14 0.18% 0.20%
B 7611 6906 7 7 0.09% 0.10%
C 7611 6906 17 17 0.22% 0.25%
D 7611 6907 80 80 1.05% 1.16%

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 14 239 132920 802.0 821 801 164.7
A 0 13 48784 291.27 821 801 164.7
A 8 192 23930 140.4 821 801 164.7
B 6 159 2024072 12928.37 824 802 156.5
B 0 229 145367 923.75 824 802 156.5
B 4 80 39699 248.55 824 802 156.5
C 14 238 191613 1026.88 799 802 185.8
C 0 10 85335 454.93 799 802 185.8
C 14 254 85228 454.35 799 802 185.8
D 8 195 251526 1307.04 801 778 191.8
D 13 138 162990 845.54 801 778 191.8
D 13 249 118366 612.93 801 778 191.8

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