ASTROSAT CZTI

Data Quality Report

Orbit 30671

Creation date: 2024-06-27T20:18:24.240509
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/AS1A10_094T79_9000004422_30671cztM0_level2.evt modeM0/AS1A10_094T79_9000004422_30671cztM0_level2_quad_clean.evt
Size (bytes)691,833,600133,827,840
Size659.8 MB 127.6 MB
Events in quadrant A3,147,351946,762
Events in quadrant B4,817,021944,222
Events in quadrant C3,281,617919,629
Events in quadrant D9,305,854827,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130221
B0183711
C0135651
D0317571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5942240.403904%
B5942801.346348%
C59421061.783911%
D5942113319.067654%

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 7232 5943 2 2 0.03% 0.03%
B 7232 5943 5 5 0.07% 0.08%
C 7232 5943 1 1 0.01% 0.02%
D 7232 5943 1257 1257 17.38% 21.15%

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 0 13 16837 101.32 809 797 158.3
A 13 254 10798 63.17 809 797 158.3
A 8 192 10529 61.47 809 797 158.3
B 6 159 1646789 11346.12 791 774 145.1
B 0 156 42059 284.58 791 774 145.1
B 12 111 16999 111.84 791 774 145.1
C 14 238 133499 744.28 778 785 178.3
C 0 10 41777 229.89 778 785 178.3
C 3 233 26273 142.94 778 785 178.3
D 8 195 4641438 26140.19 755 739 177.5
D 12 79 684758 3852.95 755 739 177.5
D 2 250 391603 2201.66 755 739 177.5

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