ASTROSAT CZTI

Data Quality Report

Orbit 35860

Creation date: 2022-06-08T19:17:58.297884
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_080T01_9000005146_35860cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35860cztM0_level2_quad_clean.evt
Size (bytes)479,496,960101,047,680
Size457.3 MB 96.4 MB
Events in quadrant A4,047,456649,144
Events in quadrant B3,106,713685,663
Events in quadrant C3,178,660677,650
Events in quadrant D3,796,638643,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154883
B0127722
C0126582
D0151512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57735319.197991%
B5773611.056643%
C5773921.593625%
D57731242.147930%

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 7147 5774 454 454 6.35% 7.86%
B 7147 5774 36 36 0.50% 0.62%
C 7147 5774 66 66 0.92% 1.14%
D 7147 5774 92 92 1.29% 1.59%

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 15 169 1262411 9151.1 667 654 137.9
A 10 83 146168 1055.36 667 654 137.9
A 7 48 32050 227.7 667 654 137.9
B 5 172 300397 2249.6 688 673 133.2
B 0 213 40779 301.02 688 673 133.2
B 5 255 28343 207.68 688 673 133.2
C 15 214 240454 1518.54 674 684 157.9
C 0 10 189792 1197.68 674 684 157.9
C 1 23 95855 602.75 674 684 157.9
D 2 153 266211 1602.1 672 655 165.8
D 13 249 217656 1309.17 672 655 165.8
D 8 195 204617 1230.51 672 655 165.8

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