ASTROSAT CZTI

Data Quality Report

Orbit 39753

Creation date: 2024-06-27T22:08:35.725384
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/AS1A12_022T01_9000005494_39753cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39753cztM0_level2_quad_clean.evt
Size (bytes)476,749,44083,381,760
Size454.7 MB 79.5 MB
Events in quadrant A3,255,961597,220
Events in quadrant B2,438,104623,464
Events in quadrant C2,764,169588,957
Events in quadrant D8,794,582358,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128823
B0105692
C0112322
D0296702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50791823.583383%
B5079160.315023%
C5079270.531601%
D5079202639.889742%

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 7111 5080 146 146 2.05% 2.87%
B 7111 5080 4 4 0.06% 0.08%
C 7111 5080 15 15 0.21% 0.30%
D 7111 5080 1910 1910 26.86% 37.60%

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 15 174 519918 4520.79 563 553 114.9
A 10 83 459776 3997.29 563 553 114.9
A 13 248 53868 464.08 563 553 114.9
B 0 190 50171 451.04 574 558 110.0
B 5 255 47935 430.72 574 558 110.0
B 4 170 33661 300.95 574 558 110.0
C 15 214 210088 1606.07 562 567 130.5
C 9 187 187294 1431.34 562 567 130.5
C 15 208 86846 661.37 562 567 130.5
D 12 227 6663870 56954.27 479 466 117.0
D 13 249 70785 601.04 479 466 117.0
D 5 32 66408 563.63 479 466 117.0

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