ASTROSAT CZTI

Data Quality Report

Orbit 17604

Creation date: 2024-06-27T17:38:32.537365
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/AS1A05_056T01_9000002604_17604cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17604cztM0_level2_quad_clean.evt
Size (bytes)540,809,28099,060,480
Size515.8 MB 94.5 MB
Events in quadrant A3,786,745625,990
Events in quadrant B3,841,466627,646
Events in quadrant C4,380,255602,690
Events in quadrant D3,842,128603,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162032
B0162602
C0180262
D0167132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77781902.442787%
B77792332.995244%
C77792553.278056%
D77791521.953979%

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 9318 7778 0 0 0.00% 0.00%
B 9319 7779 2 2 0.02% 0.03%
C 9319 7779 0 0 0.00% 0.00%
D 9319 7780 16 16 0.17% 0.21%

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 15 191 12762 59.68 980 960 197.7
A 0 226 8357 37.41 980 960 197.7
A 14 237 7789 34.53 980 960 197.7
B 12 111 23193 116.72 978 952 190.6
B 11 111 20405 102.09 978 952 190.6
B 14 111 17648 87.62 978 952 190.6
C 3 233 512500 2334.96 940 945 219.1
C 14 238 144497 655.23 940 945 219.1
C 5 218 59664 268.02 940 945 219.1
D 7 223 139117 594.18 956 927 232.6
D 12 227 86620 368.46 956 927 232.6
D 2 234 30055 125.24 956 927 232.6

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