ASTROSAT CZTI

Data Quality Report

Orbit 51148

Creation date: 2025-03-13T13:09:25.492141
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/AS1C07_001T01_9000006454_51148cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51148cztM0_level2_quad_clean.evt
Size (bytes)774,417,60071,040,960
Size738.5 MB 67.7 MB
Events in quadrant A7,004,929506,496
Events in quadrant B5,154,153491,916
Events in quadrant C11,482,055263,025
Events in quadrant D4,568,789476,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025846930
B020040483
C0402442165
D018480541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01211
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A589771112.056978%
B5964126821.260899%
C5786320455.375043%
D59514697.881028%

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 7058 6067 672 672 9.52% 11.08%
B 7059 6066 390 390 5.52% 6.43%
C 7058 5972 3108 3108 44.04% 52.04%
D 7058 6076 406 406 5.75% 6.68%

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 12 80 2308480 15578.52 597 582 148.1
A 12 3 1426418 9624.52 597 582 148.1
A 13 248 260055 1751.47 597 582 148.1
B 12 32 1777480 14892.4 558 539 119.3
B 5 185 505316 4230.5 558 539 119.3
B 4 171 165312 1380.95 558 539 119.3
C 12 247 8072013 60321.32 481 479 133.8
C 15 224 738113 5512.59 481 479 133.8
C 4 12 314177 2344.37 481 479 133.8
D 2 62 511913 3206.75 572 552 159.5
D 3 12 500767 3136.86 572 552 159.5
D 10 172 466893 2924.43 572 552 159.5

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