ASTROSAT CZTI

Data Quality Report

Orbit 04983

Creation date: 2024-06-27T14:49:59.898131
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/AS1T01_135T01_9000000632_04983cztM0_level2.evt modeM0/AS1T01_135T01_9000000632_04983cztM0_level2_quad_clean.evt
Size (bytes)357,500,16061,274,880
Size340.9 MB 58.4 MB
Events in quadrant A2,496,651378,015
Events in quadrant B2,659,201375,756
Events in quadrant C2,414,065364,731
Events in quadrant D2,875,558345,105

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113753
B0117149
C0112624
D0126860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5597110.196534%
B5594180.321773%
C559640.071480%
D5598811.446945%

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 5598 5597 1 1 0.02% 0.02%
B 5598 5596 9 9 0.16% 0.16%
C 5597 5596 0 0 0.00% 0.00%
D 5598 5598 77 77 1.38% 1.38%

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 50 36894 274.68 639 626 132.0
A 12 194 6446 44.08 639 626 132.0
A 0 226 6283 42.84 639 626 132.0
B 0 219 157446 1254.77 642 627 125.0
B 12 111 11688 88.5 642 627 125.0
B 11 111 9014 67.11 642 627 125.0
C 13 61 5031 30.38 616 618 145.3
C 9 54 4731 28.32 616 618 145.3
C 12 4 2489 12.88 616 618 145.3
D 13 235 234577 1551.53 611 594 150.8
D 13 239 142963 944.04 611 594 150.8
D 10 15 64571 424.23 611 594 150.8

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