ASTROSAT CZTI

Data Quality Report

Orbit 36637

Creation date: 2024-06-27T21:29:31.987887
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/AS1A11_049T03_9000005228_36637cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36637cztM0_level2_quad_clean.evt
Size (bytes)515,597,76064,215,360
Size491.7 MB 61.2 MB
Events in quadrant A2,827,910413,556
Events in quadrant B3,439,659418,162
Events in quadrant C3,861,883405,540
Events in quadrant D5,141,536350,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112803
B0132762
C0148182
D0187322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5085100.196657%
B50851843.618486%
C50852544.995084%
D508562812.350049%

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 7148 5086 0 0 0.00% 0.00%
B 7148 5086 88 88 1.23% 1.73%
C 7148 5086 196 196 2.74% 3.85%
D 7148 5085 540 540 7.55% 10.62%

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 10 83 197215 1463.37 676 666 134.3
A 13 6 9780 67.86 676 666 134.3
A 7 192 8363 57.31 676 666 134.3
B 5 200 633289 5034.36 664 649 125.7
B 5 255 104559 826.89 664 649 125.7
B 5 172 29755 231.62 664 649 125.7
C 14 254 652576 4497.39 640 648 145.0
C 0 10 395047 2720.8 640 648 145.0
C 15 214 212995 1464.9 640 648 145.0
D 12 235 2273063 14912.77 628 612 152.4
D 2 250 132835 867.7 628 612 152.4
D 2 153 130105 849.79 628 612 152.4

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