ASTROSAT CZTI

Data Quality Report

Orbit 15487

Creation date: 2024-06-27T17:09:24.476744
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/AS1G08_043T01_9000002288_15487cztM0_level2.evt modeM0/AS1G08_043T01_9000002288_15487cztM0_level2_quad_clean.evt
Size (bytes)493,824,960138,746,880
Size470.9 MB 132.3 MB
Events in quadrant A3,515,674958,655
Events in quadrant B3,877,620959,261
Events in quadrant C3,535,976922,076
Events in quadrant D3,587,632911,847

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144403
B0157082
C0147472
D0147572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6460921.424149%
B64601201.857585%
C64601201.857585%
D6460971.501548%

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 7786 6461 2 2 0.03% 0.03%
B 7786 6462 21 21 0.27% 0.32%
C 7786 6462 5 5 0.06% 0.08%
D 7786 6461 27 27 0.35% 0.42%

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 0 253 76066 430.91 883 868 174.5
A 9 143 17140 93.24 883 868 174.5
A 14 238 10446 54.88 883 868 174.5
B 10 245 279796 1758.26 867 849 158.6
B 4 142 43229 267.13 867 849 158.6
B 0 229 40277 248.52 867 849 158.6
C 14 238 132709 692.52 834 842 190.4
C 3 233 130853 682.78 834 842 190.4
C 9 54 17451 87.23 834 842 190.4
D 1 52 163550 788.3 861 837 206.4
D 7 38 44985 213.88 861 837 206.4
D 2 221 35482 167.85 861 837 206.4

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