ASTROSAT CZTI

Data Quality Report

Orbit 40725

Creation date: 2024-06-27T22:19:39.281818
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_042T01_9000005560_40725cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40725cztM0_level2_quad_clean.evt
Size (bytes)407,053,44083,934,720
Size388.2 MB 80.0 MB
Events in quadrant A2,966,804609,235
Events in quadrant B2,754,163626,571
Events in quadrant C5,548,676552,458
Events in quadrant D3,364,975364,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120043
B0119762
C0203412
D0141522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5546200.360620%
B5546470.847458%
C55465299.538406%
D5546197035.521096%

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 7129 5547 13 13 0.18% 0.23%
B 7129 5547 34 34 0.48% 0.61%
C 7129 5547 502 502 7.04% 9.05%
D 7129 5547 226 226 3.17% 4.07%

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 523327 4210.46 605 591 124.2
A 10 255 40489 321.36 605 591 124.2
A 12 189 34323 271.7 605 591 124.2
B 0 190 160350 1378.09 602 584 115.9
B 0 229 83661 716.59 602 584 115.9
B 5 255 49208 419.41 602 584 115.9
C 9 187 2876725 21783.73 570 571 132.0
C 15 214 233628 1765.15 570 571 132.0
C 14 254 148623 1121.33 570 571 132.0
D 1 47 563675 5016.27 453 439 112.3
D 12 191 324880 2889.52 453 439 112.3
D 2 249 296625 2637.88 453 439 112.3

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