ASTROSAT CZTI

Data Quality Report

Orbit 00814

Creation date: 2024-06-27T14:03:19.265140
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/AS1P01_010T01_9000000112_00814cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00814cztM0_level2_quad_clean.evt
Size (bytes)1,252,238,400114,814,080
Size1.2 GB 109.5 MB
Events in quadrant A9,268,291746,089
Events in quadrant B9,839,451751,833
Events in quadrant C9,253,605726,750
Events in quadrant D9,046,873710,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331090
B0347230
C0330480
D0324090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7799310.397487%
B7798440.564247%
C7799640.820618%
D7799650.833440%

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 7849 7800 378 378 4.82% 4.85%
B 7848 7799 474 474 6.04% 6.08%
C 7849 7800 386 386 4.92% 4.95%
D 7849 7800 484 484 6.17% 6.21%

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 17 60830 100.41 2397 2408 581.8
A 11 79 12061 16.59 2397 2408 581.8
A 10 133 7494 8.74 2397 2408 581.8
B 5 191 54091 86.0 2545 2549 599.3
B 0 23 37784 58.79 2545 2549 599.3
B 2 2 22405 33.13 2545 2549 599.3
C 9 52 90393 135.82 2319 2397 647.9
C 3 111 42109 61.29 2319 2397 647.9
C 3 79 32903 47.09 2319 2397 647.9
D 2 216 422625 611.13 2219 2296 687.8
D 1 4 203459 292.48 2219 2296 687.8
D 10 157 38513 52.66 2219 2296 687.8

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