ASTROSAT CZTI

Data Quality Report

Orbit 21006

Creation date: 2024-06-27T18:22:23.323973
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/AS1A05_025T18_9000003096_21006cztM0_level2.evt modeM0/AS1A05_025T18_9000003096_21006cztM0_level2_quad_clean.evt
Size (bytes)491,302,08083,836,800
Size468.5 MB 80.0 MB
Events in quadrant A3,414,834512,902
Events in quadrant B3,679,406521,883
Events in quadrant C3,471,948510,312
Events in quadrant D3,819,936488,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149072
B0154632
C0149512
D0162322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72481411.945364%
B72481952.690397%
C72481962.704194%
D72472213.049538%

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 7723 7249 0 0 0.00% 0.00%
B 7723 7249 5 5 0.06% 0.07%
C 7723 7249 0 0 0.00% 0.00%
D 7722 7248 85 85 1.10% 1.17%

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 0 226 7654 38.0 886 865 178.6
A 3 137 7453 36.88 886 865 178.6
A 12 194 6317 30.52 886 865 178.6
B 0 189 57340 333.73 885 862 169.2
B 7 220 48493 281.45 885 862 169.2
B 0 230 43854 254.04 885 862 169.2
C 14 238 133268 657.95 855 859 201.2
C 7 247 6399 27.53 855 859 201.2
C 13 61 6005 25.57 855 859 201.2
D 13 174 289510 1386.26 858 833 208.2
D 1 52 156468 747.38 858 833 208.2
D 13 104 65906 312.49 858 833 208.2

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