ASTROSAT CZTI

Data Quality Report

Orbit 27926

Creation date: 2024-06-27T19:46:03.620104
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/AS1A10_049T01_9000004032_27926cztM0_level2.evt modeM0/AS1A10_049T01_9000004032_27926cztM0_level2_quad_clean.evt
Size (bytes)658,563,840120,841,920
Size628.1 MB 115.2 MB
Events in quadrant A4,244,054809,463
Events in quadrant B4,374,804809,875
Events in quadrant C3,714,514767,601
Events in quadrant D7,085,931732,850

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177350
B0180050
C0161340
D0267120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77691151.480242%
B77691722.213927%
C77691091.403012%
D77685236.732750%

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 7969 7770 45 45 0.56% 0.58%
B 7969 7770 25 25 0.31% 0.32%
C 7969 7770 1 1 0.01% 0.01%
D 7968 7769 392 392 4.92% 5.05%

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 583275 3075.2 945 925 189.4
A 13 254 13886 68.44 945 925 189.4
A 8 192 12025 58.62 945 925 189.4
B 10 245 468165 2620.27 940 917 178.3
B 0 230 123291 686.26 940 917 178.3
B 12 0 51825 285.49 940 917 178.3
C 14 238 144015 683.02 899 902 209.5
C 3 233 58384 274.34 899 902 209.5
C 2 16 12029 53.1 899 902 209.5
D 8 195 1515545 7107.03 888 862 213.1
D 1 52 1197990 5617.03 888 862 213.1
D 7 80 276358 1292.65 888 862 213.1

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