ASTROSAT CZTI

Data Quality Report

Orbit 21190

Creation date: 2024-06-27T18:24:44.108265
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_002T01_9000003134_21190cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21190cztM0_level2_quad_clean.evt
Size (bytes)511,320,96095,143,680
Size487.6 MB 90.7 MB
Events in quadrant A3,884,459634,905
Events in quadrant B3,555,483642,527
Events in quadrant C3,303,086605,599
Events in quadrant D4,331,197574,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154442
B0144422
C0135502
D0169902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60651372.258862%
B60651171.929101%
C6065961.582852%
D60651682.769992%

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 7425 6065 79 79 1.06% 1.30%
B 7425 6066 19 19 0.26% 0.31%
C 7425 6066 1 1 0.01% 0.02%
D 7425 6066 137 137 1.85% 2.26%

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 708604 4367.03 811 796 162.1
A 13 252 49757 302.08 811 796 162.1
A 13 254 9126 51.39 811 796 162.1
B 0 182 134422 872.64 814 798 153.1
B 3 64 74162 479.11 814 798 153.1
B 0 219 36765 234.88 814 798 153.1
C 3 233 160245 894.97 770 776 178.2
C 14 238 122820 684.93 770 776 178.2
C 0 10 20557 111.01 770 776 178.2
D 1 20 785935 4138.0 775 750 189.8
D 15 0 179759 943.39 775 750 189.8
D 1 52 167095 876.65 775 750 189.8

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