ASTROSAT CZTI

Data Quality Report

Orbit 23729

Creation date: 2024-06-27T18:58:08.531585
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/AS1A07_027T14_9000003510_23729cztM0_level2.evt modeM0/AS1A07_027T14_9000003510_23729cztM0_level2_quad_clean.evt
Size (bytes)524,632,32089,184,960
Size500.3 MB 85.1 MB
Events in quadrant A3,383,122552,493
Events in quadrant B4,007,162563,282
Events in quadrant C3,457,528547,814
Events in quadrant D4,552,198535,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147471
B0164351
C0148111
D0182141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71961762.445803%
B71962523.501946%
C71951872.599027%
D71952743.808200%

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 7376 7196 0 0 0.00% 0.00%
B 7376 7196 47 47 0.64% 0.65%
C 7375 7195 1 1 0.01% 0.01%
D 7375 7195 116 116 1.57% 1.61%

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 13 254 12497 65.22 877 857 178.5
A 3 137 8060 40.36 877 857 178.5
A 0 226 7680 38.23 877 857 178.5
B 0 229 281773 1649.12 869 846 170.3
B 15 33 146772 856.63 869 846 170.3
B 0 189 123779 721.65 869 846 170.3
C 14 238 130500 648.74 841 845 199.9
C 7 247 29859 145.17 841 845 199.9
C 10 9 12116 56.4 841 845 199.9
D 12 227 624958 2960.26 854 826 210.8
D 8 195 326602 1545.15 854 826 210.8
D 7 238 125451 591.09 854 826 210.8

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