ASTROSAT CZTI

Data Quality Report

Orbit 28426

Creation date: 2024-06-27T19:51:37.524616
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_101T21_9000004090_28426cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28426cztM0_level2_quad_clean.evt
Size (bytes)432,734,400112,008,960
Size412.7 MB 106.8 MB
Events in quadrant A2,906,549755,992
Events in quadrant B3,004,592765,208
Events in quadrant C3,007,311734,029
Events in quadrant D3,777,507716,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126120
B0128040
C0127720
D0152460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6020560.930233%
B6021590.979904%
C6021981.627637%
D60211001.660854%

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 7150 6020 0 0 0.00% 0.00%
B 7151 6021 1 1 0.01% 0.02%
C 7151 6021 0 0 0.00% 0.00%
D 7151 6021 73 73 1.02% 1.21%

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 13 254 9968 61.42 750 734 150.3
A 3 137 7064 42.11 750 734 150.3
A 0 226 6322 37.17 750 734 150.3
B 0 230 53818 382.46 741 723 138.8
B 10 245 16827 116.0 741 723 138.8
B 12 111 16694 115.04 741 723 138.8
C 14 238 117040 689.51 725 729 168.7
C 7 220 59837 350.4 725 729 168.7
C 13 61 4947 25.0 725 729 168.7
D 8 195 533757 3052.03 733 713 174.7
D 1 52 228916 1306.61 733 713 174.7
D 2 250 107454 611.16 733 713 174.7

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