ASTROSAT CZTI

Data Quality Report

Orbit 20149

Creation date: 2024-06-27T18:11:49.908895
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/AS1A05_180T01_9000002992_20149cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20149cztM0_level2_quad_clean.evt
Size (bytes)527,944,32079,341,120
Size503.5 MB 75.7 MB
Events in quadrant A3,579,947509,037
Events in quadrant B3,545,732506,799
Events in quadrant C3,524,302478,177
Events in quadrant D4,908,811465,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142962
B0141572
C0140452
D0186542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63371312.067224%
B63371412.225028%
C63371552.445952%
D63374016.327915%

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 7652 6338 5 5 0.07% 0.08%
B 7652 6338 1 1 0.01% 0.02%
C 7652 6338 0 0 0.00% 0.00%
D 7652 6338 241 241 3.15% 3.80%

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 14 238 62710 346.61 910 896 178.3
A 11 29 11003 56.67 910 896 178.3
A 0 226 7916 39.36 910 896 178.3
B 0 198 20519 118.53 891 875 165.7
B 12 111 19035 109.58 891 875 165.7
B 11 111 17125 98.05 891 875 165.7
C 14 238 137941 705.58 845 855 194.3
C 3 233 90199 459.86 845 855 194.3
C 13 61 5917 26.05 845 855 194.3
D 1 52 878525 4290.79 854 833 204.6
D 11 176 721576 3523.51 854 833 204.6
D 7 96 47368 227.5 854 833 204.6

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