ASTROSAT CZTI

Data Quality Report

Orbit 34333

Creation date: 2022-02-02T21:54:00.548478
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/AS1C07_001T05_9000004902_34333cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34333cztM0_level2_quad_clean.evt
Size (bytes)484,418,88083,646,720
Size462.0 MB 79.8 MB
Events in quadrant A2,561,171551,068
Events in quadrant B3,069,392552,880
Events in quadrant C3,017,763546,869
Events in quadrant D5,664,532512,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110573
B0125802
C0122352
D0204462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A527940.075772%
B5279541.022921%
C5279551.041864%
D52794668.827429%

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 7132 5280 1 1 0.01% 0.02%
B 7132 5280 35 35 0.49% 0.66%
C 7132 5280 31 31 0.43% 0.59%
D 7132 5280 377 377 5.29% 7.14%

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 24001 182.49 648 636 128.0
A 10 255 13661 101.73 648 636 128.0
A 9 143 11985 88.64 648 636 128.0
B 5 172 267264 2237.59 642 628 119.2
B 0 229 63809 530.21 642 628 119.2
B 0 219 44909 371.6 642 628 119.2
C 15 214 221403 1509.34 636 641 146.3
C 14 254 207441 1413.88 636 641 146.3
C 0 10 75410 511.19 636 641 146.3
D 8 195 969570 6483.68 618 601 149.4
D 1 52 719441 4809.99 618 601 149.4
D 12 235 664385 4441.59 618 601 149.4

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