ASTROSAT CZTI

Data Quality Report

Orbit 12431

Creation date: 2024-06-27T16:27:14.290163
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/AS1A04_141T01_9000001848_12431cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12431cztM0_level2_quad_clean.evt
Size (bytes)474,258,24093,790,080
Size452.3 MB 89.4 MB
Events in quadrant A3,520,827600,884
Events in quadrant B3,412,129620,430
Events in quadrant C3,031,038611,251
Events in quadrant D3,964,379561,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144663
B0141532
C0131562
D0160012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400390.609375%
B6400370.578125%
C6400100.156250%
D64002023.156250%

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 7656 6402 14 14 0.18% 0.22%
B 7656 6402 12 12 0.16% 0.19%
C 7656 6402 2 2 0.03% 0.03%
D 7656 6402 175 175 2.29% 2.73%

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 13 251 291889 1860.24 776 762 156.5
A 1 162 85124 539.05 776 762 156.5
A 1 178 42607 267.38 776 762 156.5
B 4 239 209771 1396.68 790 771 149.6
B 3 64 46644 306.55 790 771 149.6
B 0 187 33750 220.39 790 771 149.6
C 15 208 38294 213.11 767 775 176.1
C 13 61 5451 26.56 767 775 176.1
C 1 16 1936 6.59 767 775 176.1
D 1 52 894094 5014.99 744 726 178.1
D 8 195 68487 380.38 744 726 178.1
D 7 80 65161 361.71 744 726 178.1

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