ASTROSAT CZTI

Data Quality Report

Orbit 20017

Creation date: 2024-06-27T18:10:08.242738
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/AS1C04_001T01_9000002984_20017cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20017cztM0_level2_quad_clean.evt
Size (bytes)614,286,720119,704,320
Size585.8 MB 114.2 MB
Events in quadrant A3,579,745844,123
Events in quadrant B3,707,530844,084
Events in quadrant C3,412,027812,005
Events in quadrant D7,478,124685,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146781
B0151201
C0140431
D0264871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62951973.129468%
B62951352.144559%
C62951312.081017%
D6295186129.563145%

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 7590 6297 105 105 1.38% 1.67%
B 7590 6297 28 28 0.37% 0.44%
C 7590 6297 10 10 0.13% 0.16%
D 7590 6297 1703 1703 22.44% 27.04%

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 5 16 290487 1705.87 853 837 169.8
A 0 226 7795 40.98 853 837 169.8
A 13 254 6735 34.74 853 837 169.8
B 7 220 244157 1571.89 841 824 154.8
B 0 190 42147 266.94 841 824 154.8
B 0 197 31758 199.83 841 824 154.8
C 14 238 131667 705.34 814 821 185.5
C 3 233 65295 347.56 814 821 185.5
C 0 207 41586 219.75 814 821 185.5
D 7 38 3153739 17608.67 741 718 179.1
D 9 1 483609 2696.8 741 718 179.1
D 12 218 470692 2624.66 741 718 179.1

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