ASTROSAT CZTI

Data Quality Report

Orbit 02530

Creation date: 2024-06-27T14:19:05.628857
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/AS1SLEW_01234_9000000375_02530cztM0_level2.evt modeM0/AS1SLEW_01234_9000000375_02530cztM0_level2_quad_clean.evt
Size (bytes)10,566,7201,955,520
Size10.1 MB 1.9 MB
Events in quadrant A58,16511,200
Events in quadrant B58,08711,756
Events in quadrant C61,77211,239
Events in quadrant D131,0368,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02401
B02361
C02521
D04631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10554.761905%
B10543.809524%
C10521.904762%
D1053432.380952%

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 105 105 0 0 0.00% 0.00%
B 105 105 0 0 0.00% 0.00%
C 105 105 0 0 0.00% 0.00%
D 105 105 22 22 20.95% 20.95%

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 0 199 1383 277.21 14 14 4.9
A 0 226 278 53.46 14 14 4.9
A 12 194 172 31.99 14 14 4.9
B 15 255 225 43.87 14 14 4.8
B 6 36 202 39.08 14 14 4.8
B 12 111 199 38.46 14 14 4.8
C 2 53 4745 934.86 14 14 5.1
C 7 159 337 63.83 14 14 5.1
C 8 128 147 26.28 14 14 5.1
D 11 130 73215 16845.62 11 11 4.3
D 11 131 9172 2108.12 11 11 4.3
D 2 184 2108 482.56 11 11 4.3

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
Veto Counter