ASTROSAT CZTI

Data Quality Report

Orbit 40581

Creation date: 2024-06-27T22:17:51.083983
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_054T02_9000005550_40581cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40581cztM0_level2_quad_clean.evt
Size (bytes)361,961,28092,442,240
Size345.2 MB 88.2 MB
Events in quadrant A3,107,910632,479
Events in quadrant B4,066,789630,483
Events in quadrant C2,684,703611,729
Events in quadrant D3,088,618519,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128613
B0159562
C0117862
D0130092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5781230.397855%
B57811833.165542%
C5781190.328663%
D578157910.015568%

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 7153 5782 14 14 0.20% 0.24%
B 7153 5782 132 132 1.85% 2.28%
C 7153 5782 13 13 0.18% 0.22%
D 7153 5782 50 50 0.70% 0.86%

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 526716 4126.94 622 611 127.5
A 2 79 98732 769.69 622 611 127.5
A 15 191 70412 547.54 622 611 127.5
B 3 112 826405 6941.3 609 590 119.0
B 0 190 588531 4941.87 609 590 119.0
B 5 255 162809 1363.51 609 590 119.0
C 15 214 251744 1762.66 606 608 142.5
C 14 254 51918 360.13 606 608 142.5
C 0 10 13918 93.42 606 608 142.5
D 12 191 215194 1495.3 577 559 143.5
D 12 227 140987 978.32 577 559 143.5
D 10 34 127524 884.53 577 559 143.5

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