ASTROSAT CZTI

Data Quality Report

Orbit 29870

Creation date: 2024-06-27T20:08:30.179979
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_102T10_9000004282_29870cztM0_level2.evt modeM0/AS1A10_102T10_9000004282_29870cztM0_level2_quad_clean.evt
Size (bytes)626,207,04094,919,040
Size597.2 MB 90.5 MB
Events in quadrant A3,461,963610,711
Events in quadrant B5,545,150607,025
Events in quadrant C5,488,469575,378
Events in quadrant D3,971,317569,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150033
B0221282
C0215572
D0165472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7363690.937118%
B73631261.711259%
C73632503.395355%
D73631271.724840%

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 8688 7365 1 1 0.01% 0.01%
B 8688 7365 0 0 0.00% 0.00%
C 8688 7365 36 36 0.41% 0.49%
D 8688 7365 72 72 0.83% 0.98%

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 8 192 19588 104.19 892 874 179.6
A 13 254 12017 62.04 892 874 179.6
A 3 137 9024 45.37 892 874 179.6
B 6 159 2046412 12039.98 883 860 169.9
B 12 111 21385 120.81 883 860 169.9
B 11 111 19604 110.33 883 860 169.9
C 3 233 1965430 9954.89 849 854 197.3
C 14 238 136576 687.73 849 854 197.3
C 10 22 53308 265.79 849 854 197.3
D 8 195 267005 1299.19 856 835 204.9
D 7 80 192673 936.37 856 835 204.9
D 13 104 110096 533.31 856 835 204.9

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