ASTROSAT CZTI

Data Quality Report

Orbit 39538

Creation date: 2024-06-27T22:05:52.594777
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_39538cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39538cztM0_level2_quad_clean.evt
Size (bytes)373,636,80088,407,360
Size356.3 MB 84.3 MB
Events in quadrant A2,972,207598,390
Events in quadrant B2,309,190617,258
Events in quadrant C4,855,849538,047
Events in quadrant D3,260,811534,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123422
B0111355
C0183231
D0137562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5558170.305865%
B555550.090009%
C55585539.949622%
D55571492.681303%

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 6933 5559 14 14 0.20% 0.25%
B 6933 5558 1 1 0.01% 0.02%
C 6933 5559 505 505 7.28% 9.08%
D 6933 5559 140 140 2.02% 2.52%

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 382283 3180.71 583 571 120.0
A 6 10 296421 2465.25 583 571 120.0
A 15 222 24952 203.16 583 571 120.0
B 12 111 14317 121.65 582 563 113.1
B 11 111 13269 112.38 582 563 113.1
B 14 111 12405 104.74 582 563 113.1
C 9 187 2013072 15648.43 552 554 128.6
C 15 208 450536 3498.86 552 554 128.6
C 15 214 222989 1729.55 552 554 128.6
D 12 227 841469 6034.65 564 545 139.3
D 13 249 126716 905.43 564 545 139.3
D 2 250 73995 527.09 564 545 139.3

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