ASTROSAT CZTI

Data Quality Report

Orbit 09612

Creation date: 2024-06-27T15:48:23.148000
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/AS1G05_238T01_9000001364_09612cztM0_level2.evt modeM0/AS1G05_238T01_9000001364_09612cztM0_level2_quad_clean.evt
Size (bytes)491,837,76065,770,560
Size469.1 MB 62.7 MB
Events in quadrant A3,346,663394,574
Events in quadrant B3,519,888389,832
Events in quadrant C3,224,792380,794
Events in quadrant D4,360,096370,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137873
B0143662
C0136422
D0174152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65411502.293227%
B65411602.446109%
C65411021.559395%
D65411642.507262%

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 7721 6542 0 0 0.00% 0.00%
B 7721 6541 6 6 0.08% 0.09%
C 7721 6542 0 0 0.00% 0.00%
D 7721 6542 44 44 0.57% 0.67%

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 14 13559 71.88 867 848 176.8
A 0 226 8086 40.93 867 848 176.8
A 12 194 7132 35.53 867 848 176.8
B 4 80 73523 445.34 857 837 163.2
B 0 214 68514 414.65 857 837 163.2
B 10 252 24858 147.17 857 837 163.2
C 13 61 6220 28.18 826 828 191.4
C 14 67 2294 7.66 826 828 191.4
C 3 202 2037 6.32 826 828 191.4
D 13 122 796034 3783.09 828 809 210.2
D 12 227 115151 543.95 828 809 210.2
D 6 240 88576 417.53 828 809 210.2

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