ASTROSAT CZTI

Data Quality Report

Orbit 37815

Creation date: 2024-06-27T21:44:50.392899
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/AS1T05_054T01_9000005350_37815cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37815cztM0_level2_quad_clean.evt
Size (bytes)541,549,44074,122,560
Size516.5 MB 70.7 MB
Events in quadrant A2,973,684485,677
Events in quadrant B4,934,872456,739
Events in quadrant C2,878,997489,769
Events in quadrant D5,222,560408,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124013
B0184562
C0121682
D0194842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5762210.364457%
B576263110.951059%
C5762160.277681%
D576282314.283235%

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 7106 5763 11 11 0.15% 0.19%
B 7106 5762 581 581 8.18% 10.08%
C 7106 5763 12 12 0.17% 0.21%
D 7106 5763 817 817 11.50% 14.18%

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 10 83 361264 2729.61 649 638 132.1
A 9 143 39796 296.39 649 638 132.1
A 12 189 15675 113.82 649 638 132.1
B 10 246 1634098 13602.32 619 602 120.1
B 5 172 228850 1900.65 619 602 120.1
B 0 189 227275 1887.53 619 602 120.1
C 15 214 260210 1760.53 630 634 147.4
C 0 10 82563 555.67 630 634 147.4
C 14 254 51825 347.19 630 634 147.4
D 2 249 2458207 17253.87 582 568 142.4
D 13 249 106061 740.61 582 568 142.4
D 12 233 84269 587.62 582 568 142.4

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