ASTROSAT CZTI

Data Quality Report

Orbit 04795

Creation date: 2024-06-27T14:47:08.134452
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/AS1G05_156T09_9000000604_04795cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04795cztM0_level2_quad_clean.evt
Size (bytes)587,413,44088,142,400
Size560.2 MB 84.1 MB
Events in quadrant A4,571,166530,466
Events in quadrant B4,382,322525,540
Events in quadrant C3,801,174524,532
Events in quadrant D4,474,281513,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193533
B0185902
C0172272
D0192992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82722402.901354%
B82721732.091393%
C8272550.664894%
D82721621.958414%

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 9187 8274 115 115 1.25% 1.39%
B 9187 8274 37 37 0.40% 0.45%
C 9187 8274 1 1 0.01% 0.01%
D 9187 8274 108 108 1.18% 1.31%

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 50 359767 1858.22 943 921 193.1
A 8 15 185192 954.21 943 921 193.1
A 14 238 166788 858.91 943 921 193.1
B 8 3 235658 1264.36 962 937 185.6
B 14 167 137287 734.47 962 937 185.6
B 10 16 116926 624.79 962 937 185.6
C 8 208 110167 502.13 934 937 217.5
C 8 128 14256 61.23 934 937 217.5
C 12 4 12633 53.77 934 937 217.5
D 13 235 444335 1966.91 924 892 225.5
D 2 136 236067 1043.13 924 892 225.5
D 2 234 132813 585.14 924 892 225.5

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