ASTROSAT CZTI

Data Quality Report

Orbit 11940

Creation date: 2024-06-27T16:20:20.161227
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/AS1A04_124T01_9000001766_11940cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11940cztM0_level2_quad_clean.evt
Size (bytes)503,786,880124,300,800
Size480.4 MB 118.5 MB
Events in quadrant A3,215,382842,360
Events in quadrant B4,120,345847,791
Events in quadrant C2,945,765851,888
Events in quadrant D4,561,588796,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136953
B0164002
C0129542
D0179332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107711.162600%
B61073375.518258%
C6107390.638611%
D61071822.980187%

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 7418 6108 1 1 0.01% 0.02%
B 7418 6108 184 184 2.48% 3.01%
C 7418 6108 1 1 0.01% 0.02%
D 7418 6108 87 87 1.17% 1.42%

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 115676 765.49 749 735 150.2
A 1 178 61522 404.83 749 735 150.2
A 1 161 54090 355.33 749 735 150.2
B 4 239 488133 3576.92 745 727 136.3
B 3 64 240538 1759.9 745 727 136.3
B 15 204 220532 1613.08 745 727 136.3
C 0 10 35867 207.63 744 747 169.1
C 13 61 5713 29.36 744 747 169.1
C 0 207 3792 18.0 744 747 169.1
D 13 122 654810 3828.25 729 709 170.9
D 1 52 636078 3718.62 729 709 170.9
D 8 195 361632 2112.37 729 709 170.9

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