ASTROSAT CZTI

Data Quality Report

Orbit 30430

Creation date: 2024-06-27T20:15:09.797408
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_121T02_9000004378_30430cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30430cztM0_level2_quad_clean.evt
Size (bytes)661,832,640102,435,840
Size631.2 MB 97.7 MB
Events in quadrant A3,712,485677,273
Events in quadrant B5,582,280676,185
Events in quadrant C3,698,338660,906
Events in quadrant D6,570,284593,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157142
B0217282
C0154582
D0246273

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7106841.182100%
B71061502.110892%
C71061792.518998%
D7105124617.536946%

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 7626 7107 24 24 0.31% 0.34%
B 7626 7107 2 2 0.03% 0.03%
C 7626 7107 0 0 0.00% 0.00%
D 7625 7106 1180 1180 15.48% 16.61%

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 4 2 268573 1514.01 876 857 176.8
A 14 239 30255 166.25 876 857 176.8
A 8 192 25359 138.57 876 857 176.8
B 6 159 2067110 12183.26 873 850 169.6
B 0 229 43567 251.87 873 850 169.6
B 12 111 20863 118.0 873 850 169.6
C 14 238 151137 752.89 848 852 199.6
C 3 233 134285 668.47 848 852 199.6
C 0 10 32520 158.65 848 852 199.6
D 13 104 3090012 15223.59 782 766 202.9
D 13 249 287115 1411.11 782 766 202.9
D 8 195 84716 413.7 782 766 202.9

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