ASTROSAT CZTI

Data Quality Report

Orbit 16006

Creation date: 2024-06-27T17:16:41.847258
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/AS1T02_090T01_9000002364_16006cztM0_level2.evt modeM0/AS1T02_090T01_9000002364_16006cztM0_level2_quad_clean.evt
Size (bytes)498,021,12082,857,600
Size474.9 MB 79.0 MB
Events in quadrant A3,431,961523,648
Events in quadrant B3,657,529524,251
Events in quadrant C3,601,713503,572
Events in quadrant D3,940,822494,836

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142833
B0149102
C0145012
D0160682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6639931.400813%
B66391201.807501%
C66391211.822564%
D66392043.072752%

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 7810 6640 0 0 0.00% 0.00%
B 7810 6640 14 14 0.18% 0.21%
C 7810 6640 1 1 0.01% 0.02%
D 7810 6640 108 108 1.38% 1.63%

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 0 226 8182 40.91 889 873 178.6
A 12 194 6668 32.44 889 873 178.6
A 15 157 6404 30.96 889 873 178.6
B 5 65 63567 379.31 878 860 165.3
B 7 220 34097 201.05 878 860 165.3
B 10 245 29138 171.05 878 860 165.3
C 3 233 154722 784.58 844 851 196.1
C 14 238 132147 669.47 844 851 196.1
C 9 54 14420 69.19 844 851 196.1
D 12 218 497072 2379.77 858 836 208.5
D 10 70 83046 394.25 858 836 208.5
D 2 234 26330 122.26 858 836 208.5

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