ASTROSAT CZTI

Data Quality Report

Orbit 38776

Creation date: 2024-06-27T21:56:16.005770
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_051T01_9000005394_38776cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38776cztM0_level2_quad_clean.evt
Size (bytes)345,260,16095,307,840
Size329.3 MB 90.9 MB
Events in quadrant A2,876,322647,864
Events in quadrant B2,535,645665,341
Events in quadrant C3,084,189615,745
Events in quadrant D3,844,694562,059

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121853
B0114362
C0126562
D0154272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5644110.194897%
B5644120.212615%
C5644550.974486%
D56442003.543586%

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 7347 5645 6 6 0.08% 0.11%
B 7347 5645 1 1 0.01% 0.02%
C 7347 5645 54 54 0.73% 0.96%
D 7347 5645 190 190 2.59% 3.37%

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 406116 3211.39 625 613 126.3
A 13 248 24532 189.42 625 613 126.3
A 9 143 13417 101.4 625 613 126.3
B 4 171 36794 296.25 625 607 122.1
B 5 200 19077 151.21 625 607 122.1
B 12 111 15638 123.06 625 607 122.1
C 14 254 357765 2519.17 605 610 141.8
C 15 214 250877 1765.24 605 610 141.8
C 0 10 41512 288.5 605 610 141.8
D 5 222 492759 3417.53 595 579 144.0
D 10 118 342475 2374.01 595 579 144.0
D 2 249 257992 1787.39 595 579 144.0

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