ASTROSAT CZTI

Data Quality Report

Orbit 21312

Creation date: 2024-06-27T18:26:16.299727
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_037T01_9000003144_21312cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21312cztM0_level2_quad_clean.evt
Size (bytes)551,211,84098,049,600
Size525.7 MB 93.5 MB
Events in quadrant A4,198,838614,709
Events in quadrant B3,759,555629,364
Events in quadrant C3,522,170610,506
Events in quadrant D4,701,295589,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174692
B0161142
C0154642
D0191112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7546931.232441%
B7546530.702359%
C7546580.768619%
D75461181.563742%

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 7916 7547 50 50 0.63% 0.66%
B 7916 7547 1 1 0.01% 0.01%
C 7916 7547 0 0 0.00% 0.00%
D 7916 7547 66 66 0.83% 0.87%

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 9 143 317276 1707.71 902 882 185.3
A 15 236 223538 1201.77 902 882 185.3
A 11 47 99564 532.63 902 882 185.3
B 0 189 109692 628.76 903 879 173.1
B 0 230 33507 188.54 903 879 173.1
B 0 190 32569 183.12 903 879 173.1
C 14 238 134664 653.07 867 873 204.9
C 13 61 6134 25.68 867 873 204.9
C 0 239 5678 23.45 867 873 204.9
D 13 174 555107 2609.56 871 846 212.4
D 1 52 417895 1963.54 871 846 212.4
D 12 235 116481 544.43 871 846 212.4

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