ASTROSAT CZTI

Data Quality Report

Orbit 18194

Creation date: 2024-06-27T17:46:32.544424
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_160T02_9000002710_18194cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18194cztM0_level2_quad_clean.evt
Size (bytes)500,184,00086,339,520
Size477.0 MB 82.3 MB
Events in quadrant A3,309,658563,574
Events in quadrant B3,332,387565,818
Events in quadrant C4,032,204534,302
Events in quadrant D4,064,666529,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133981
B0133611
C0157341
D0159131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60341181.955585%
B60341252.071594%
C60342984.938681%
D60352624.341342%

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 7329 6035 2 2 0.03% 0.03%
B 7329 6035 3 3 0.04% 0.05%
C 7329 6035 96 96 1.31% 1.59%
D 7330 6036 149 149 2.03% 2.47%

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 15 174 59755 347.83 845 829 169.4
A 0 226 7410 38.85 845 829 169.4
A 12 194 6282 32.19 845 829 169.4
B 7 220 39674 249.13 828 809 156.0
B 0 189 20991 129.37 828 809 156.0
B 0 229 17338 105.95 828 809 156.0
C 4 254 827674 4584.22 788 795 180.4
C 14 238 124044 683.29 788 795 180.4
C 4 238 7038 34.61 788 795 180.4
D 7 238 436667 2227.56 813 792 195.7
D 1 52 144127 732.52 813 792 195.7
D 11 176 139006 706.35 813 792 195.7

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