ASTROSAT CZTI

Data Quality Report

Orbit 34683

Creation date: 2024-06-27T21:03:42.121129
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/AS1T04_078T01_9000004962_34683cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34683cztM0_level2_quad_clean.evt
Size (bytes)510,451,20060,491,520
Size486.8 MB 57.7 MB
Events in quadrant A3,045,450386,612
Events in quadrant B3,904,305369,409
Events in quadrant C2,795,399376,576
Events in quadrant D5,382,645355,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119713
B0145572
C0109852
D0194782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4897330.673882%
B48974459.087196%
C4897200.408413%
D48973346.820502%

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 7020 4898 15 15 0.21% 0.31%
B 7020 4898 314 314 4.47% 6.41%
C 7020 4898 11 11 0.16% 0.22%
D 7020 4898 306 306 4.36% 6.25%

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 15 169 416539 3200.74 644 634 129.9
A 10 83 46976 356.64 644 634 129.9
A 9 143 25962 194.92 644 634 129.9
B 5 172 744817 6418.9 610 595 115.9
B 5 255 408664 3519.59 610 595 115.9
B 4 81 121001 1038.5 610 595 115.9
C 15 214 212017 1503.12 609 613 140.6
C 0 10 79865 563.5 609 613 140.6
C 15 159 59583 419.29 609 613 140.6
D 8 195 2005494 13540.76 606 588 148.1
D 7 38 384253 2591.2 606 588 148.1
D 2 249 153407 1032.11 606 588 148.1

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