ASTROSAT CZTI

Data Quality Report

Orbit 15753

Creation date: 2024-06-27T17:13:03.670817
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_088T01_9000002332_15753cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15753cztM0_level2_quad_clean.evt
Size (bytes)545,503,68090,604,800
Size520.2 MB 86.4 MB
Events in quadrant A4,016,096552,830
Events in quadrant B4,116,694559,299
Events in quadrant C3,960,697541,994
Events in quadrant D3,879,311529,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172535
B0171954
C0169864
D0170584

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80504415.478261%
B80504435.503106%
C80504335.378882%
D80503624.496894%

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 8386 8056 5 5 0.06% 0.06%
B 8386 8055 1 1 0.01% 0.01%
C 8386 8055 0 0 0.00% 0.00%
D 8386 8056 4 4 0.05% 0.05%

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 15 239 108195 516.23 1009 984 207.7
A 15 69 16021 72.4 1009 984 207.7
A 0 226 9039 38.79 1009 984 207.7
B 3 209 51601 257.28 1008 979 196.8
B 12 111 23391 113.91 1008 979 196.8
B 11 111 20297 98.18 1008 979 196.8
C 14 238 145342 634.1 970 974 227.7
C 4 238 12246 49.51 970 974 227.7
C 10 187 8224 31.84 970 974 227.7
D 1 52 96776 393.67 989 955 243.4
D 2 234 31456 125.31 989 955 243.4
D 10 70 17109 66.37 989 955 243.4

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