ASTROSAT CZTI

Data Quality Report

Orbit 31438

Creation date: 2024-06-27T20:28:30.209233
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/AS1C06_005T01_9000004580_31438cztM0_level2.evt modeM0/AS1C06_005T01_9000004580_31438cztM0_level2_quad_clean.evt
Size (bytes)566,968,320100,281,600
Size540.7 MB 95.6 MB
Events in quadrant A2,489,007749,034
Events in quadrant B8,008,756479,313
Events in quadrant C2,899,635740,272
Events in quadrant D3,428,880711,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011448795
B0302132937
C0127111001
D0149111232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01128
B01137
C01139
D011412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513870.136240%
B4973224145.063342%
C51161362.658327%
D5084871.711251%

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 7132 5255 0 0 0.00% 0.00%
B 7131 5068 2083 2083 29.21% 41.10%
C 7131 5219 2 2 0.03% 0.04%
D 7131 5205 66 66 0.93% 1.27%

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 9904 72.13 644 632 128.6
A 3 137 6206 43.36 644 632 128.6
A 0 226 5242 35.86 644 632 128.6
B 12 1 5217777 64589.58 431 420 80.8
B 6 159 1029722 12742.5 431 420 80.8
B 4 80 54436 668.7 431 420 80.8
C 3 233 217901 1476.05 635 642 147.2
C 14 238 132034 892.67 635 642 147.2
C 14 254 40351 269.78 635 642 147.2
D 8 195 466160 3112.63 626 611 149.6
D 1 52 270477 1804.31 626 611 149.6
D 5 233 109531 728.23 626 611 149.6

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