ASTROSAT CZTI

Data Quality Report

Orbit 14589

Creation date: 2024-06-27T16:57:13.126545
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/AS1G08_055T02_9000002148_14589cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14589cztM0_level2_quad_clean.evt
Size (bytes)553,982,400101,871,360
Size528.3 MB 97.2 MB
Events in quadrant A4,790,708658,115
Events in quadrant B3,294,933679,266
Events in quadrant C4,235,684666,178
Events in quadrant D4,043,968656,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185123
B0138252
C0175072
D0161052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60972444.001968%
B6097721.180909%
C6097861.410530%
D60972884.723635%

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 7423 6099 62 62 0.84% 1.02%
B 7423 6099 1 1 0.01% 0.02%
C 7423 6099 0 0 0.00% 0.00%
D 7423 6099 224 224 3.02% 3.67%

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 23 1510339 9317.73 812 797 162.0
A 0 226 97057 594.17 812 797 162.0
A 12 189 35846 216.34 812 797 162.0
B 0 229 26799 170.26 820 801 152.7
B 12 111 17504 109.39 820 801 152.7
B 10 16 16655 103.83 820 801 152.7
C 3 233 1072541 5803.15 809 818 184.7
C 13 61 5843 27.21 809 818 184.7
C 3 234 5078 23.07 809 818 184.7
D 10 199 732678 3893.18 799 781 188.0
D 12 110 161552 855.19 799 781 188.0
D 13 172 41156 214.77 799 781 188.0

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