ASTROSAT CZTI

Data Quality Report

Orbit 28273

Creation date: 2024-06-27T19:49:54.633907
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/AS1A10_067T01_9000004076_28273cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28273cztM0_level2_quad_clean.evt
Size (bytes)666,034,560100,120,320
Size635.2 MB 95.5 MB
Events in quadrant A3,540,447651,892
Events in quadrant B4,132,642659,122
Events in quadrant C3,595,272624,234
Events in quadrant D8,402,779583,137

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152320
B0169850
C0153320
D0298920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73801762.384824%
B73802763.739837%
C73792162.927226%
D7377189825.728616%

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 7675 7380 1 1 0.01% 0.01%
B 7675 7381 56 56 0.73% 0.76%
C 7675 7380 0 0 0.00% 0.00%
D 7674 7377 1583 1583 20.63% 21.46%

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 12 96 14636 74.47 914 896 184.5
A 13 254 11919 59.74 914 896 184.5
A 3 137 8965 43.73 914 896 184.5
B 10 245 536137 3035.34 899 875 176.3
B 4 200 35869 198.44 899 875 176.3
B 12 111 21748 118.37 899 875 176.3
C 14 238 141649 682.92 871 876 206.1
C 3 233 55912 266.99 871 876 206.1
C 13 61 6031 25.01 871 876 206.1
D 1 52 5113290 28415.27 750 726 179.9
D 2 250 210951 1168.42 750 726 179.9
D 8 195 143520 793.64 750 726 179.9

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