ASTROSAT CZTI

Data Quality Report

Orbit 45551

Creation date: 2024-06-27T23:13:31.790501
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/AS1A13_093T11_9000006108_45551cztM0_level2.fits modeM0/AS1A13_093T11_9000006108_45551cztM0_level2_quad_clean.evt
Size (bytes)541,385,280123,837,120
Size516.3 MB 118.1 MB
Events in quadrant A6,354,838829,889
Events in quadrant B4,333,899829,842
Events in quadrant C3,881,235813,267
Events in quadrant D4,868,655737,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247690
B0184720
C0173270
D0200600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77551221.573179%
B77562853.674575%
C77561321.701908%
D77562553.287777%

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 7755 7755 67 67 0.86% 0.86%
B 7756 7756 203 203 2.62% 2.62%
C 7756 7756 76 76 0.98% 0.98%
D 7756 7756 186 186 2.40% 2.40%

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 10 83 2717415 15330.05 847 826 177.2
A 10 248 303166 1706.14 847 826 177.2
A 2 79 46567 258.12 847 826 177.2
B 5 172 916911 5515.83 841 816 166.1
B 15 201 39822 234.86 841 816 166.1
B 12 111 21294 123.3 841 816 166.1
C 12 2 377219 1898.76 840 844 198.2
C 14 254 205187 1030.88 840 844 198.2
C 2 14 10514 48.78 840 844 198.2
D 11 224 564156 2728.41 826 801 206.5
D 1 52 383113 1851.59 826 801 206.5
D 10 1 99863 479.77 826 801 206.5

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