ASTROSAT CZTI

Data Quality Report

Orbit 20161228_G06_086T02_9000000936_level2

Creation date: 2025-11-09T00:11:28.123725
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/AS1G06_086T02_9000000936cztM0_level2.fits modeM0/AS1G06_086T02_9000000936cztM0_level2_quad_clean.evt
Size (bytes)2,204,645,7602,221,951,680
Size2.1 GB 2.1 GB
Events in quadrant A13,381,43613,412,223
Events in quadrant B12,928,73213,411,757
Events in quadrant C13,110,33612,702,799
Events in quadrant D11,105,01611,531,277

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03730
C03740
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04967650
B05090210
C04987550
D06000660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048560
B048600
C048420
D048400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23702427421.156845%
B23706241531.751862%
C23703924261.023460%
D23696679963.374324%

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 305390 237473 0 0 0.00% 0.00%
B 305390 237521 0 0 0.00% 0.00%
C 305390 237429 0 0 0.00% 0.00%
D 305390 237315 0 0 0.00% 0.00%

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 29 12729 10.78 3480 3243 879.9
A 7 110 11249 9.1 3480 3243 879.9
A 0 30 9937 7.61 3480 3243 879.9
B 2 9 10961 11.36 3411 3235 680.1
B 12 226 8930 8.37 3411 3235 680.1
B 14 254 8817 8.21 3411 3235 680.1
C 1 80 9742 7.18 3462 3195 912.0
C 1 81 9533 6.95 3462 3195 912.0
C 12 241 9267 6.66 3462 3195 912.0
D 7 5 8167 6.32 3174 2876 837.0
D 6 231 8081 6.22 3174 2876 837.0
D 7 3 7943 6.05 3174 2876 837.0

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