ASTROSAT CZTI

Data Quality Report

Orbit 24102

Creation date: 2024-06-27T19:02:11.772668
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/AS1C05_012T04_9000003564_24102cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24102cztM0_level2_quad_clean.evt
Size (bytes)592,911,360140,690,880
Size565.4 MB 134.2 MB
Events in quadrant A3,387,876990,045
Events in quadrant B3,414,542991,085
Events in quadrant C3,393,831945,173
Events in quadrant D7,296,579857,838

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141542
B0141992
C0141223
D0263782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68351281.872714%
B68351422.077542%
C68341602.341235%
D6834105215.393620%

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 7910 6835 0 0 0.00% 0.00%
B 7910 6835 0 0 0.00% 0.00%
C 7909 6834 0 0 0.00% 0.00%
D 7909 6834 918 918 11.61% 13.43%

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 11470 61.22 877 860 173.3
A 0 226 7686 39.38 877 860 173.3
A 3 137 7171 36.41 877 860 173.3
B 12 111 18714 111.94 861 842 159.7
B 11 111 16622 98.83 861 842 159.7
B 14 111 14130 83.23 861 842 159.7
C 14 238 135187 716.58 827 833 187.5
C 7 247 17260 87.61 827 833 187.5
C 0 239 10414 51.1 827 833 187.5
D 8 195 1413992 7388.87 801 778 191.3
D 1 52 1318272 6888.41 801 778 191.3
D 11 176 922436 4818.81 801 778 191.3

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