ASTROSAT CZTI

Data Quality Report

Orbit 04612

Creation date: 2024-06-27T14:44:32.184477
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/AS1G05_154T01_9000000576_04612cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04612cztM0_level2_quad_clean.evt
Size (bytes)1,894,348,800244,517,760
Size1.8 GB 233.2 MB
Events in quadrant A10,915,4981,539,665
Events in quadrant B12,066,6781,530,485
Events in quadrant C10,930,4801,533,116
Events in quadrant D21,919,1531,231,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482165
B0507454
C0474854
D08128912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227993381.482521%
B227994531.986929%
C227991680.736874%
D22798478120.971138%

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 25594 22803 42 42 0.16% 0.18%
B 25594 22803 136 136 0.53% 0.60%
C 25594 22803 5 5 0.02% 0.02%
D 25594 22803 3864 3864 15.10% 16.95%

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 8 15 345948 636.68 2638 2582 539.3
A 0 118 295322 542.81 2638 2582 539.3
A 0 226 54017 95.37 2638 2582 539.3
B 15 204 423146 826.23 2656 2596 509.0
B 14 167 397296 775.45 2656 2596 509.0
B 10 16 287272 559.29 2656 2596 509.0
C 14 48 676868 1129.83 2551 2557 596.8
C 9 54 136447 224.34 2551 2557 596.8
C 7 247 66773 107.6 2551 2557 596.8
D 8 112 11892323 22012.65 2230 2164 540.2
D 13 235 711528 1313.27 2230 2164 540.2
D 2 136 240510 441.26 2230 2164 540.2

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