ASTROSAT CZTI

Data Quality Report

Orbit 13284

Creation date: 2024-06-27T16:38:46.642777
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/AS1T02_013T01_9000001976_13284cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13284cztM0_level2_quad_clean.evt
Size (bytes)644,932,80087,445,440
Size615.1 MB 83.4 MB
Events in quadrant A3,101,070655,833
Events in quadrant B8,425,693305,313
Events in quadrant C3,003,769647,017
Events in quadrant D4,574,103599,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133442
B0291511
C0131001
D0178051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294490.778519%
B6294309049.094376%
C6294310.492533%
D62941752.780426%

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 7410 6296 1 1 0.01% 0.02%
B 7410 6296 1677 1677 22.63% 26.64%
C 7410 6296 2 2 0.03% 0.03%
D 7410 6296 119 119 1.61% 1.89%

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 1 162 24896 150.08 785 770 160.7
A 8 15 20113 120.33 785 770 160.7
A 9 143 16136 95.59 785 770 160.7
B 4 239 6142017 64222.08 502 491 95.6
B 10 245 148808 1550.95 502 491 95.6
B 0 189 43537 450.13 502 491 95.6
C 15 208 35861 199.71 760 767 175.7
C 13 61 5584 27.41 760 767 175.7
C 14 234 2015 7.1 760 767 175.7
D 13 104 743351 4105.74 754 736 180.9
D 1 52 560035 3092.23 754 736 180.9
D 8 195 190963 1051.72 754 736 180.9

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