ASTROSAT CZTI

Data Quality Report

Orbit 03022

Creation date: 2024-06-27T14:23:33.079491
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/AS1G05_238T02_9000000420_03022cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03022cztM0_level2_quad_clean.evt
Size (bytes)376,338,24047,111,040
Size358.9 MB 44.9 MB
Events in quadrant A3,105,986262,893
Events in quadrant B2,869,822263,387
Events in quadrant C2,457,489257,641
Events in quadrant D2,586,261253,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127203
B0120842
C0113192
D0118712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5554300.540151%
B5554450.810227%
C5554120.216060%
D555470.126035%

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 9866 5556 11 11 0.11% 0.20%
B 9866 5556 35 35 0.35% 0.63%
C 9866 5556 6 6 0.06% 0.11%
D 9866 5556 4 4 0.04% 0.07%

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 8 15 381643 3008.18 624 611 126.7
A 0 50 276043 2174.48 624 611 126.7
A 13 14 17390 132.47 624 611 126.7
B 15 204 141719 1163.5 632 618 121.3
B 0 230 114917 942.49 632 618 121.3
B 0 219 78850 645.09 632 618 121.3
C 6 80 47373 334.93 600 603 139.6
C 1 192 17643 122.03 600 603 139.6
C 0 219 14745 101.27 600 603 139.6
D 13 114 196836 1368.64 599 584 143.4
D 7 80 35329 242.31 599 584 143.4
D 13 223 23650 160.86 599 584 143.4

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
Veto Counter