ASTROSAT CZTI

Data Quality Report

Orbit 25773

Creation date: 2024-06-27T19:21:18.116887
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/AS1A09_147T01_9000003754_25773cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25773cztM0_level2_quad_clean.evt
Size (bytes)1,210,233,600217,103,040
Size1.1 GB 207.0 MB
Events in quadrant A8,082,1521,362,668
Events in quadrant B8,288,4361,391,928
Events in quadrant C8,422,9961,334,350
Events in quadrant D10,698,5561,303,661

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352400
B0356030
C0357100
D0427570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171412671.557669%
B171403502.042007%
C171414232.467767%
D171416273.657896%

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 18286 17144 0 0 0.00% 0.00%
B 18285 17143 1 1 0.01% 0.01%
C 18286 17143 0 0 0.00% 0.00%
D 18286 17142 328 328 1.79% 1.91%

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 21503 46.28 2095 2047 420.4
A 3 137 19920 42.51 2095 2047 420.4
A 0 226 18035 38.03 2095 2047 420.4
B 0 190 73207 181.41 2079 2023 392.4
B 12 111 49191 120.21 2079 2023 392.4
B 11 111 44870 109.19 2079 2023 392.4
C 14 238 322335 677.59 2026 2035 472.7
C 3 233 210491 440.99 2026 2035 472.7
C 13 61 13803 24.9 2026 2035 472.7
D 7 80 1031977 2126.75 2035 1989 484.3
D 8 195 754978 1554.79 2035 1989 484.3
D 13 104 605755 1246.67 2035 1989 484.3

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