ASTROSAT CZTI

Data Quality Report

Orbit 30666

Creation date: 2024-06-27T20:18:21.383936
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/AS1A10_094T79_9000004422_30666cztM0_level2.evt modeM0/AS1A10_094T79_9000004422_30666cztM0_level2_quad_clean.evt
Size (bytes)1,426,536,000230,906,880
Size1.3 GB 220.2 MB
Events in quadrant A6,179,5281,620,616
Events in quadrant B9,500,3221,600,676
Events in quadrant C6,779,3191,542,490
Events in quadrant D19,901,1921,361,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265462
B0378752
C0277252
D0679144

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125491321.051877%
B125501701.354582%
C125501801.434263%
D12549293523.388318%

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 13784 12549 36 36 0.26% 0.29%
B 13785 12551 10 10 0.07% 0.08%
C 13785 12552 2 2 0.01% 0.02%
D 13784 12551 3054 3054 22.16% 24.33%

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 13 401626 1344.36 1492 1462 297.7
A 13 254 23405 73.72 1492 1462 297.7
A 8 192 22672 71.26 1492 1462 297.7
B 6 159 3601922 12967.89 1471 1432 277.6
B 12 111 34926 120.63 1471 1432 277.6
B 11 111 32135 110.58 1471 1432 277.6
C 3 233 939404 2834.16 1424 1431 331.0
C 14 238 233161 700.19 1424 1431 331.0
C 2 114 29347 84.35 1424 1431 331.0
D 8 195 9736320 30852.02 1347 1308 315.5
D 12 227 1730784 5481.02 1347 1308 315.5
D 12 79 1424026 4508.85 1347 1308 315.5

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