ASTROSAT CZTI

Data Quality Report

Orbit 25828

Creation date: 2024-06-27T19:21:53.098697
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/AS1A07_068T01_9000003756_25828cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25828cztM0_level2_quad_clean.evt
Size (bytes)512,147,52077,754,240
Size488.4 MB 74.2 MB
Events in quadrant A3,385,996480,224
Events in quadrant B3,494,369481,703
Events in quadrant C3,968,690451,665
Events in quadrant D4,170,389437,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148450
B0149900
C0164350
D0174760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7222871.204652%
B72231171.619826%
C72231792.478195%
D72233324.596428%

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 7492 7223 0 0 0.00% 0.00%
B 7493 7224 1 1 0.01% 0.01%
C 7493 7224 26 26 0.35% 0.36%
D 7493 7224 261 261 3.48% 3.61%

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 10180 52.48 877 858 177.6
A 3 137 8460 42.79 877 858 177.6
A 0 226 7484 37.3 877 858 177.6
B 0 219 68984 401.02 871 848 169.9
B 12 111 21154 119.51 871 848 169.9
B 11 111 18749 105.36 871 848 169.9
C 3 233 554424 2789.58 831 837 198.4
C 14 238 130083 651.28 831 837 198.4
C 7 238 41834 206.59 831 837 198.4
D 1 52 796963 3978.31 826 803 200.1
D 12 233 149889 744.96 826 803 200.1
D 1 3 62068 306.13 826 803 200.1

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