ASTROSAT CZTI

Data Quality Report

Orbit 28011

Creation date: 2024-06-27T19:47:00.406500
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_021T08_9000004042_28011cztM0_level2.evt modeM0/AS1A10_021T08_9000004042_28011cztM0_level2_quad_clean.evt
Size (bytes)528,721,92077,299,200
Size504.2 MB 73.7 MB
Events in quadrant A3,274,397480,664
Events in quadrant B3,321,621490,298
Events in quadrant C3,324,046472,879
Events in quadrant D5,665,069457,343

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131940
B0133530
C0132820
D0211700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62961282.033037%
B62961302.064803%
C62961562.477764%
D62966019.545743%

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 7281 6296 0 0 0.00% 0.00%
B 7281 6296 3 3 0.04% 0.05%
C 7281 6296 1 1 0.01% 0.02%
D 7281 6296 447 447 6.14% 7.10%

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 37275 215.28 838 819 169.3
A 13 254 10919 59.64 838 819 169.3
A 3 137 7734 40.83 838 819 169.3
B 10 245 37817 236.48 825 803 156.5
B 4 200 19279 118.04 825 803 156.5
B 12 111 18873 115.45 825 803 156.5
C 14 238 129350 680.55 808 814 188.9
C 3 233 37770 195.67 808 814 188.9
C 2 16 5540 25.02 808 814 188.9
D 1 52 1736422 9318.38 783 763 186.3
D 8 195 620870 3329.22 783 763 186.3
D 2 250 251338 1345.28 783 763 186.3

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