ASTROSAT CZTI

Data Quality Report

Orbit 04125

Creation date: 2024-06-27T14:37:44.554857
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/AS1G05_195T01_9000000530_04125cztM0_level2.evt modeM0/AS1G05_195T01_9000000530_04125cztM0_level2_quad_clean.evt
Size (bytes)613,566,72081,849,600
Size585.1 MB 78.1 MB
Events in quadrant A3,602,792532,681
Events in quadrant B3,791,341531,184
Events in quadrant C2,838,951522,220
Events in quadrant D7,919,835450,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149843
B0155932
C0129942
D0279642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328981.548673%
B63281051.659292%
C6328220.347661%
D6328228736.140961%

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 7618 6329 46 46 0.60% 0.73%
B 7618 6329 28 28 0.37% 0.44%
C 7618 6329 1 1 0.01% 0.02%
D 7618 6329 2169 2169 28.47% 34.27%

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 0 199 382517 2500.38 749 736 152.7
A 0 50 191759 1251.06 749 736 152.7
A 0 226 44487 286.54 749 736 152.7
B 15 204 276016 1915.82 755 737 143.7
B 14 167 187782 1301.75 755 737 143.7
B 8 3 135055 934.79 755 737 143.7
C 9 144 37500 224.1 713 716 164.1
C 12 4 11283 64.38 713 716 164.1
C 13 61 5951 31.89 713 716 164.1
D 2 37 4441016 28842.18 635 618 154.0
D 2 63 432447 2804.9 635 618 154.0
D 12 233 353902 2294.72 635 618 154.0

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