ASTROSAT CZTI

Data Quality Report

Orbit 35612

Creation date: 2022-04-30T21:20:14.557175
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/AS1A10_065T04_9000005098_35612cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35612cztM0_level2_quad_clean.evt
Size (bytes)548,792,64047,917,440
Size523.4 MB 45.7 MB
Events in quadrant A2,467,689304,667
Events in quadrant B2,757,880305,449
Events in quadrant C3,110,253291,362
Events in quadrant D7,936,980189,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105333
B0115242
C0122392
D0270502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512250.097618%
B51221042.030457%
C51221613.143303%
D5122217142.385787%

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 7065 5123 0 0 0.00% 0.00%
B 7065 5123 68 68 0.96% 1.33%
C 7065 5123 135 135 1.91% 2.64%
D 7065 5123 1860 1860 26.33% 36.31%

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 137283 1139.21 594 583 120.0
A 7 3 14252 113.91 594 583 120.0
A 13 6 9041 70.49 594 583 120.0
B 5 172 372452 3228.25 588 572 115.2
B 4 81 22337 188.94 588 572 115.2
B 10 245 16578 138.95 588 572 115.2
C 0 10 539050 4031.39 569 572 133.6
C 15 214 210929 1574.86 569 572 133.6
C 1 23 81012 602.22 569 572 133.6
D 7 80 4647526 43365.18 436 425 107.2
D 12 233 1426969 13312.03 436 425 107.2
D 13 249 65468 606.96 436 425 107.2

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