ASTROSAT CZTI

Data Quality Report

Orbit 22799

Creation date: 2024-06-27T18:45:55.419083
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/AS1T03_168T01_9000003368_22799cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22799cztM0_level2_quad_clean.evt
Size (bytes)349,277,760102,965,760
Size333.1 MB 98.2 MB
Events in quadrant A2,330,568718,141
Events in quadrant B2,444,620720,535
Events in quadrant C2,311,704687,716
Events in quadrant D3,177,316668,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097611
B0100691
C098201
D0125261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A460650.108554%
B4606280.607903%
C4606290.629614%
D4606851.845419%

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 4606 4606 0 0 0.00% 0.00%
B 4606 4606 13 13 0.28% 0.28%
C 4606 4606 0 0 0.00% 0.00%
D 4606 4606 71 71 1.54% 1.54%

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 11 47 18604 151.13 599 590 119.2
A 13 254 9121 71.57 599 590 119.2
A 0 226 5199 38.67 599 590 119.2
B 0 245 68848 626.26 592 583 109.0
B 0 228 27447 246.45 592 583 109.0
B 0 230 16882 149.53 592 583 109.0
C 14 238 93127 715.59 567 572 129.3
C 10 22 7353 52.43 567 572 129.3
C 13 61 4034 26.77 567 572 129.3
D 1 52 825325 6015.69 575 561 137.1
D 8 195 37260 267.68 575 561 137.1
D 12 227 31186 223.37 575 561 137.1

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