ASTROSAT CZTI

Data Quality Report

Orbit 13694

Creation date: 2024-06-27T16:44:39.053357
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/AS1G08_070T01_9000002028_13694cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13694cztM0_level2_quad_clean.evt
Size (bytes)447,569,28082,488,960
Size426.8 MB 78.7 MB
Events in quadrant A2,988,479533,312
Events in quadrant B3,266,797565,266
Events in quadrant C3,071,050511,538
Events in quadrant D3,827,979475,954

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123362
B0132151
C0125681
D0149911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58931161.968437%
B58931422.409639%
C5893751.272696%
D58932163.665366%

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 6999 5896 0 0 0.00% 0.00%
B 6999 5896 10 10 0.14% 0.17%
C 6999 5896 1 1 0.01% 0.02%
D 6999 5896 104 104 1.49% 1.76%

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 1 162 17991 110.63 769 751 155.8
A 1 178 6926 39.63 769 751 155.8
A 0 226 6870 39.27 769 751 155.8
B 8 250 127546 880.29 766 753 144.0
B 0 219 92709 638.42 766 753 144.0
B 3 209 33297 225.94 766 753 144.0
C 3 233 171404 998.82 739 743 170.9
C 14 234 10524 57.24 739 743 170.9
C 12 4 6368 32.92 739 743 170.9
D 13 122 391788 2206.37 736 716 177.2
D 5 222 223733 1258.23 736 716 177.2
D 1 52 117721 660.13 736 716 177.2

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