ASTROSAT CZTI

Data Quality Report

Orbit 18093

Creation date: 2024-06-27T17:45:20.643542
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/AS1T03_080T01_9000002686_18093cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18093cztM0_level2_quad_clean.evt
Size (bytes)438,984,000130,602,240
Size418.6 MB 124.6 MB
Events in quadrant A3,134,523904,206
Events in quadrant B3,152,282898,931
Events in quadrant C3,083,979864,644
Events in quadrant D3,508,723861,505

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129741
B0129561
C0125971
D0142231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61091081.767883%
B6110951.554828%
C6110911.489362%
D61101532.504092%

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 7429 6110 15 15 0.20% 0.25%
B 7430 6111 12 12 0.16% 0.20%
C 7430 6110 0 0 0.00% 0.00%
D 7430 6111 65 65 0.87% 1.06%

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 98585 632.1 783 767 154.8
A 4 2 21140 131.65 783 767 154.8
A 0 226 6941 39.9 783 767 154.8
B 0 197 34967 241.86 765 748 141.5
B 3 64 27522 189.24 765 748 141.5
B 0 189 25977 178.32 765 748 141.5
C 14 238 117436 675.85 743 748 172.7
C 3 233 64514 369.33 743 748 172.7
C 13 61 5350 26.65 743 748 172.7
D 11 176 515642 2834.24 761 739 181.7
D 2 234 26020 139.16 761 739 181.7
D 10 70 24790 132.39 761 739 181.7

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