ASTROSAT CZTI

Data Quality Report

Orbit 38508

Creation date: 2024-06-27T21:53:41.476505
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_9000005386_38508cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38508cztM0_level2_quad_clean.evt
Size (bytes)367,528,32090,385,920
Size350.5 MB 86.2 MB
Events in quadrant A2,816,251630,782
Events in quadrant B2,687,794638,814
Events in quadrant C2,648,463599,824
Events in quadrant D5,036,394493,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115843
B0115112
C0111362
D0185402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5338110.206070%
B5338350.655676%
C5338140.262271%
D533876114.256276%

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 7251 5339 5 5 0.07% 0.09%
B 7251 5339 19 19 0.26% 0.36%
C 7251 5339 16 16 0.22% 0.30%
D 7251 5339 716 716 9.87% 13.41%

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 410433 3413.1 597 586 120.1
A 12 189 37894 310.69 597 586 120.1
A 13 248 23812 193.42 597 586 120.1
B 8 3 126695 1130.11 592 577 111.6
B 0 183 97379 867.42 592 577 111.6
B 0 213 46130 408.19 592 577 111.6
C 15 214 225685 1666.97 582 586 135.0
C 0 10 49576 362.79 582 586 135.0
C 14 254 47690 348.83 582 586 135.0
D 12 233 1718493 12649.28 555 538 135.8
D 13 249 453271 3333.47 555 538 135.8
D 12 235 351600 2584.87 555 538 135.8

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