ASTROSAT CZTI

Data Quality Report

Orbit 11422

Creation date: 2024-06-27T16:12:41.411931
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/AS1A04_024T04_9000001670_11422cztM0_level2.evt modeM0/AS1A04_024T04_9000001670_11422cztM0_level2_quad_clean.evt
Size (bytes)528,249,60085,757,760
Size503.8 MB 81.8 MB
Events in quadrant A4,173,988549,540
Events in quadrant B4,686,598531,301
Events in quadrant C3,007,498545,154
Events in quadrant D3,687,692516,010

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166873
B0182132
C0134262
D0154792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65222003.066544%
B65224787.329040%
C6522460.705305%
D65222373.633855%

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 7502 6523 56 56 0.75% 0.86%
B 7502 6523 237 237 3.16% 3.63%
C 7502 6523 0 0 0.00% 0.00%
D 7502 6523 140 140 1.87% 2.15%

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 5 984650 6111.18 797 781 161.0
A 1 162 31783 192.57 797 781 161.0
A 8 6 21669 129.74 797 781 161.0
B 4 239 1208011 8231.88 783 764 146.7
B 3 64 162456 1102.53 783 764 146.7
B 15 204 83626 565.01 783 764 146.7
C 13 61 5715 27.89 769 774 177.2
C 0 207 3471 15.22 769 774 177.2
C 12 4 2635 10.5 769 774 177.2
D 10 253 303207 1673.19 758 736 180.8
D 2 33 182339 1004.58 758 736 180.8
D 13 152 114814 631.05 758 736 180.8

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