ASTROSAT CZTI

Data Quality Report

Orbit 30228

Creation date: 2024-06-27T20:12:25.307751
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_007T01_9000004350_30228cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30228cztM0_level2_quad_clean.evt
Size (bytes)597,945,60092,088,000
Size570.2 MB 87.8 MB
Events in quadrant A3,847,912569,953
Events in quadrant B5,793,561570,847
Events in quadrant C3,951,086563,464
Events in quadrant D4,004,079558,334

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162760
B0230760
C0163040
D0164960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75532853.773335%
B75543644.818639%
C75543294.355308%
D75541892.501986%

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 7553 7553 21 21 0.28% 0.28%
B 7554 7554 1 1 0.01% 0.01%
C 7554 7554 39 39 0.52% 0.52%
D 7554 7554 4 4 0.05% 0.05%

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 164747 839.55 954 931 195.1
A 13 254 13842 66.17 954 931 195.1
A 3 137 10082 46.9 954 931 195.1
B 6 159 2105384 11335.89 934 906 185.6
B 12 111 23192 120.04 934 906 185.6
B 11 111 21272 109.7 934 906 185.6
C 3 233 208843 954.84 917 923 217.8
C 14 238 146606 669.03 917 923 217.8
C 2 114 17808 77.54 917 923 217.8
D 8 195 320120 1383.7 935 910 230.7
D 12 227 53419 227.61 935 910 230.7
D 2 250 43695 185.46 935 910 230.7

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