ASTROSAT CZTI

Data Quality Report

Orbit 31043

Creation date: 2024-06-27T20:22:40.366262
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_071T63_9000004486_31043cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31043cztM0_level2_quad_clean.evt
Size (bytes)1,255,276,800214,073,280
Size1.2 GB 204.2 MB
Events in quadrant A7,544,7081,387,882
Events in quadrant B12,324,4771,374,562
Events in quadrant C7,788,6351,328,157
Events in quadrant D9,290,8361,302,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323883
B0483033
C0326683
D0370283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158222591.636961%
B158224532.863102%
C158223672.319555%
D158223732.357477%

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 17597 15822 0 0 0.00% 0.00%
B 17597 15822 34 34 0.19% 0.21%
C 17597 15822 2 2 0.01% 0.01%
D 17597 15822 131 131 0.74% 0.83%

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 30332 72.2 1953 1910 393.7
A 3 137 20634 47.56 1953 1910 393.7
A 0 226 16992 38.31 1953 1910 393.7
B 6 159 4302622 11572.94 1920 1867 371.6
B 0 190 142624 378.76 1920 1867 371.6
B 4 80 77328 203.06 1920 1867 371.6
C 14 238 296812 673.63 1866 1879 437.8
C 3 233 89594 200.34 1866 1879 437.8
C 0 10 62688 138.89 1866 1879 437.8
D 8 195 1315267 2943.22 1880 1831 446.3
D 1 52 261043 580.86 1880 1831 446.3
D 2 250 135280 299.04 1880 1831 446.3

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