ASTROSAT CZTI

Data Quality Report

Orbit 17404

Creation date: 2024-06-27T17:36:05.776922
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/AS1T03_030T01_9000002574_17404cztM0_level2.evt modeM0/AS1T03_030T01_9000002574_17404cztM0_level2_quad_clean.evt
Size (bytes)694,025,28082,722,240
Size661.9 MB 78.9 MB
Events in quadrant A3,307,790540,095
Events in quadrant B3,490,362539,545
Events in quadrant C3,557,246518,397
Events in quadrant D10,169,315397,997

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147701
B0151621
C0149091
D0352751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7297190.260381%
B7297370.507058%
C7297320.438536%
D7297205928.217076%

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 7732 7298 0 0 0.00% 0.00%
B 7732 7298 5 5 0.06% 0.07%
C 7732 7298 0 0 0.00% 0.00%
D 7732 7298 1878 1878 24.29% 25.73%

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 0 226 7320 36.84 860 839 175.9
A 12 194 6364 31.4 860 839 175.9
A 3 137 6277 30.91 860 839 175.9
B 7 220 32887 191.85 858 835 167.1
B 0 197 30937 180.17 858 835 167.1
B 0 230 26634 154.42 858 835 167.1
C 14 238 125408 645.59 822 827 193.0
C 5 218 122974 632.97 822 827 193.0
C 3 233 85549 439.03 822 827 193.0
D 11 176 6221686 34093.99 743 720 182.5
D 13 232 826050 4523.22 743 720 182.5
D 10 70 102903 560.01 743 720 182.5

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