ASTROSAT CZTI

Data Quality Report

Orbit 48610

Creation date: 2024-09-23T13:41:27.224549
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/AS1A13_037T01_9000006436_48610cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48610cztM0_level2_quad_clean.evt
Size (bytes)527,074,560119,577,600
Size502.7 MB 114.0 MB
Events in quadrant A8,238,063740,442
Events in quadrant B3,492,283819,106
Events in quadrant C3,674,617797,095
Events in quadrant D3,500,641722,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300351
B0162961
C0170121
D0166111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77916488.317289%
B77912443.131819%
C77911121.437556%
D7791560.718778%

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 7791 7791 171 171 2.19% 2.19%
B 7791 7791 4 4 0.05% 0.05%
C 7791 7791 62 62 0.80% 0.80%
D 7791 7791 7 7 0.09% 0.09%

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 10 83 4324671 24231.51 846 826 178.4
A 13 248 611582 3422.77 846 826 178.4
A 13 254 13451 70.75 846 826 178.4
B 5 255 24425 135.59 864 834 174.0
B 12 111 22932 127.01 864 834 174.0
B 0 197 21882 120.97 864 834 174.0
C 12 250 331873 1654.65 851 854 200.1
C 1 241 13915 65.29 851 854 200.1
C 14 254 7261 32.03 851 854 200.1
D 2 165 109674 513.83 847 819 211.8
D 10 199 72584 338.75 847 819 211.8
D 2 234 39542 182.79 847 819 211.8

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