ASTROSAT CZTI

Data Quality Report

Orbit 06227

Creation date: 2024-06-27T15:04:25.437100
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/AS1A02_046T01_9000000814_06227cztM0_level2.evt modeM0/AS1A02_046T01_9000000814_06227cztM0_level2_quad_clean.evt
Size (bytes)146,180,16035,075,520
Size139.4 MB 33.5 MB
Events in quadrant A1,133,589231,707
Events in quadrant B1,019,089234,593
Events in quadrant C877,999232,593
Events in quadrant D1,263,934223,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046470
B042830
C039150
D051530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1912713.713389%
B1912271.412134%
C191250.261506%
D1912251.307531%

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 1912 1912 2 2 0.10% 0.10%
B 1912 1912 4 4 0.21% 0.21%
C 1912 1912 0 0 0.00% 0.00%
D 1912 1912 5 5 0.26% 0.26%

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 34 241994 5121.54 221 216 47.2
A 8 15 29197 613.9 221 216 47.2
A 0 31 5958 121.63 221 216 47.2
B 0 219 49819 1117.97 227 221 44.4
B 15 204 41095 921.33 227 221 44.4
B 0 245 17798 396.2 227 221 44.4
C 13 61 1796 29.44 224 224 53.4
C 1 16 1608 25.92 224 224 53.4
C 8 222 898 12.62 224 224 53.4
D 12 221 205566 3725.91 222 214 55.1
D 2 136 108816 1970.48 222 214 55.1
D 2 63 74644 1350.46 222 214 55.1

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