ASTROSAT CZTI

Data Quality Report

Orbit 39529

Creation date: 2024-06-27T22:05:45.263369
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_018T01_9000005488_39529cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39529cztM0_level2_quad_clean.evt
Size (bytes)397,123,20094,118,400
Size378.7 MB 89.8 MB
Events in quadrant A3,773,098630,835
Events in quadrant B2,509,721657,575
Events in quadrant C4,179,884599,186
Events in quadrant D3,794,450563,738

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150193
B0115672
C0162162
D0150982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56981993.492453%
B569890.157950%
C56982013.527554%
D56981632.860653%

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 7400 5699 168 168 2.27% 2.95%
B 7400 5699 5 5 0.07% 0.09%
C 7400 5699 196 196 2.65% 3.44%
D 7400 5699 144 144 1.95% 2.53%

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 13 248 609401 4812.54 621 608 126.5
A 10 83 463825 3661.76 621 608 126.5
A 15 222 292805 2309.83 621 608 126.5
B 15 85 44851 367.42 622 604 120.4
B 5 255 17354 139.09 622 604 120.4
B 12 111 14817 118.02 622 604 120.4
C 9 187 1529366 10808.14 607 611 141.4
C 15 214 251604 1774.5 607 611 141.4
C 4 111 16056 109.19 607 611 141.4
D 13 174 652317 4350.38 607 591 149.8
D 13 249 483874 3225.99 607 591 149.8
D 14 34 115790 768.97 607 591 149.8

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