ASTROSAT CZTI

Data Quality Report

Orbit 14795

Creation date: 2024-06-27T16:59:46.864219
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/AS1A04_022T02_9000002184_14795cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14795cztM0_level2_quad_clean.evt
Size (bytes)520,346,88073,500,480
Size496.2 MB 70.1 MB
Events in quadrant A3,520,763447,170
Events in quadrant B3,879,867437,603
Events in quadrant C4,562,732435,565
Events in quadrant D3,335,729433,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147753
B0156792
C0182612
D0143892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67651341.980783%
B67652423.577236%
C67652313.414634%
D67651171.729490%

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 7666 6768 1 1 0.01% 0.01%
B 7666 6768 104 104 1.36% 1.54%
C 7666 6768 77 77 1.00% 1.14%
D 7666 6768 10 10 0.13% 0.15%

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 0 23 109373 627.57 852 833 173.0
A 11 29 83063 475.45 852 833 173.0
A 12 189 43606 247.31 852 833 173.0
B 3 64 245214 1543.71 837 818 158.3
B 10 16 150224 943.71 837 818 158.3
B 3 209 51125 317.76 837 818 158.3
C 3 233 744468 3949.74 813 817 188.3
C 4 254 643774 3414.93 813 817 188.3
C 13 61 5963 27.33 813 817 188.3
D 15 0 79191 372.42 826 804 210.5
D 10 70 67140 315.16 826 804 210.5
D 2 234 26404 121.63 826 804 210.5

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