ASTROSAT CZTI

Data Quality Report

Orbit 08225

Creation date: 2024-06-27T15:29:40.373759
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/AS1C02_041T01_9000001136_08225cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08225cztM0_level2_quad_clean.evt
Size (bytes)486,826,56096,056,640
Size464.3 MB 91.6 MB
Events in quadrant A3,567,623610,355
Events in quadrant B3,684,241611,079
Events in quadrant C3,495,383599,680
Events in quadrant D3,502,241581,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156162
B0158081
C0152021
D0156781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7270550.756534%
B7270881.210454%
C7270160.220083%
D7270450.618982%

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 7570 7271 25 25 0.33% 0.34%
B 7570 7271 22 22 0.29% 0.30%
C 7570 7271 0 0 0.00% 0.00%
D 7570 7271 23 23 0.30% 0.32%

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 5 16 131784 731.57 862 843 179.0
A 6 16 117686 652.8 862 843 179.0
A 0 226 8270 41.49 862 843 179.0
B 10 16 148283 891.76 860 841 165.3
B 11 51 117202 703.78 860 841 165.3
B 0 214 34152 201.47 860 841 165.3
C 9 68 218245 1112.17 829 833 195.5
C 1 16 44907 225.46 829 833 195.5
C 13 61 6402 28.49 829 833 195.5
D 2 136 79933 384.71 833 809 205.7
D 12 233 66006 316.99 833 809 205.7
D 8 230 47862 228.78 833 809 205.7

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