ASTROSAT CZTI

Data Quality Report

Orbit 21223

Creation date: 2024-06-27T18:25:11.291406
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/AS1A06_005T05_9000003136_21223cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21223cztM0_level2_quad_clean.evt
Size (bytes)562,708,800101,399,040
Size536.6 MB 96.7 MB
Events in quadrant A3,502,944653,897
Events in quadrant B3,619,548665,138
Events in quadrant C3,466,008639,832
Events in quadrant D5,956,621601,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151602
B0155252
C0151302
D0228132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7319260.355240%
B7320520.710383%
C7320751.024590%
D73205116.980874%

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 8910 7321 4 4 0.04% 0.05%
B 8911 7322 8 8 0.09% 0.11%
C 8911 7322 1 1 0.01% 0.01%
D 8911 7322 365 365 4.10% 4.98%

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 15 236 73231 408.77 880 861 177.0
A 11 47 34524 190.14 880 861 177.0
A 13 254 11464 59.89 880 861 177.0
B 0 190 38804 223.06 887 865 170.1
B 3 64 30924 176.73 887 865 170.1
B 0 197 30501 174.24 887 865 170.1
C 14 238 131711 660.91 843 849 198.0
C 0 239 17442 83.8 843 849 198.0
C 0 10 12585 59.27 843 849 198.0
D 13 174 1935683 9560.0 833 808 202.4
D 7 238 315240 1553.57 833 808 202.4
D 13 153 161060 791.79 833 808 202.4

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