ASTROSAT CZTI

Data Quality Report

Orbit 21566

Creation date: 2024-06-27T18:29:46.899928
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/AS1A06_009T03_9000003198_21566cztM0_level2.evt modeM0/AS1A06_009T03_9000003198_21566cztM0_level2_quad_clean.evt
Size (bytes)496,762,56066,876,480
Size473.7 MB 63.8 MB
Events in quadrant A3,484,001403,350
Events in quadrant B3,613,965409,029
Events in quadrant C3,563,725391,995
Events in quadrant D3,953,313378,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140132
B0145322
C0144182
D0156632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334320.505210%
B6334550.868330%
C63331181.863256%
D6333891.405337%

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 7689 6335 1 1 0.01% 0.02%
B 7689 6335 0 0 0.00% 0.00%
C 7688 6334 0 0 0.00% 0.00%
D 7688 6334 36 36 0.47% 0.57%

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 0 226 7917 39.66 903 890 177.2
A 13 254 7561 37.65 903 890 177.2
A 3 137 6698 32.78 903 890 177.2
B 0 230 44262 259.33 907 891 167.2
B 12 111 18774 106.93 907 891 167.2
B 11 111 16401 92.74 907 891 167.2
C 14 238 141604 707.0 870 879 199.0
C 3 233 24065 116.49 870 879 199.0
C 13 61 6101 26.24 870 879 199.0
D 1 52 178288 856.62 872 852 207.1
D 12 235 163613 785.77 872 852 207.1
D 13 153 122072 585.22 872 852 207.1

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