ASTROSAT CZTI

Data Quality Report

Orbit 25076

Creation date: 2024-06-27T19:13:33.695732
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/AS1T03_206T01_9000003672_25076cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25076cztM0_level2_quad_clean.evt
Size (bytes)539,801,28089,009,280
Size514.8 MB 84.9 MB
Events in quadrant A3,462,003562,057
Events in quadrant B3,521,071572,733
Events in quadrant C3,460,402540,919
Events in quadrant D5,419,311516,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148771
B0149441
C0147801
D0209001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72271612.227757%
B72271652.283105%
C72281912.642501%
D72282833.915329%

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 7522 7227 0 0 0.00% 0.00%
B 7522 7227 2 2 0.03% 0.03%
C 7523 7229 0 0 0.00% 0.00%
D 7523 7228 119 119 1.58% 1.65%

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 34 57928 318.26 881 861 179.3
A 13 254 10957 56.31 881 861 179.3
A 3 137 8197 40.91 881 861 179.3
B 0 190 42044 242.05 880 856 170.2
B 10 251 22773 128.8 880 856 170.2
B 12 111 21313 120.22 880 856 170.2
C 14 238 134343 666.68 844 847 200.2
C 7 247 18073 86.03 844 847 200.2
C 8 128 9285 42.14 844 847 200.2
D 9 35 946125 4552.15 848 822 207.7
D 1 52 700822 3370.88 848 822 207.7
D 8 195 350103 1681.98 848 822 207.7

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