ASTROSAT CZTI

Data Quality Report

Orbit 24772

Creation date: 2024-06-27T19:09:43.881623
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/AS1A07_147T01_9000003624_24772cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24772cztM0_level2_quad_clean.evt
Size (bytes)532,347,840106,704,000
Size507.7 MB 101.8 MB
Events in quadrant A3,759,240690,181
Events in quadrant B4,083,762695,322
Events in quadrant C3,783,072660,944
Events in quadrant D3,977,690653,744

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161462
B0169632
C0161152
D0168272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76432112.760696%
B76432783.637315%
C76442803.663004%
D76442232.917321%

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 8193 7646 0 0 0.00% 0.00%
B 8193 7646 15 15 0.18% 0.20%
C 8194 7647 0 0 0.00% 0.00%
D 8194 7647 30 30 0.37% 0.39%

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 13 254 11090 51.62 972 950 196.4
A 3 137 9352 42.78 972 950 196.4
A 15 223 8830 40.12 972 950 196.4
B 3 64 292267 1550.15 958 932 187.9
B 12 111 23761 121.47 958 932 187.9
B 11 111 21704 110.52 958 932 187.9
C 14 238 147376 663.85 930 936 220.6
C 13 61 6501 25.23 930 936 220.6
C 7 247 5821 22.14 930 936 220.6
D 1 52 191158 823.5 949 924 231.0
D 8 195 88960 381.1 949 924 231.0
D 12 233 84056 359.87 949 924 231.0

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