ASTROSAT CZTI

Data Quality Report

Orbit 27990

Creation date: 2024-06-27T19:46:48.626776
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_065T03_9000004040_27990cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27990cztM0_level2_quad_clean.evt
Size (bytes)483,416,64079,191,360
Size461.0 MB 75.5 MB
Events in quadrant A3,292,153497,319
Events in quadrant B3,342,831498,170
Events in quadrant C3,565,965470,831
Events in quadrant D3,994,611474,709

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137510
B0139320
C0146920
D0159170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542360.550290%
B6542560.856007%
C65421141.742586%
D6542831.268725%

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 7627 6542 0 0 0.00% 0.00%
B 7627 6542 0 0 0.00% 0.00%
C 7627 6542 2 2 0.03% 0.03%
D 7627 6542 54 54 0.71% 0.83%

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 8 192 9314 50.14 851 836 169.1
A 13 254 8741 46.75 851 836 169.1
A 3 137 7932 41.96 851 836 169.1
B 12 111 20134 119.12 848 829 162.1
B 11 111 18411 108.49 848 829 162.1
B 14 111 17685 104.01 848 829 162.1
C 3 233 158926 816.1 826 831 193.7
C 14 238 134082 687.85 826 831 193.7
C 10 22 43675 221.16 826 831 193.7
D 1 52 543040 2770.08 830 810 195.7
D 8 195 252601 1286.32 830 810 195.7
D 7 223 58550 294.97 830 810 195.7

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