ASTROSAT CZTI

Data Quality Report

Orbit 35188

Creation date: 2022-04-01T16:16:03.504006
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/AS1T05_020T01_9000005050_35188cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35188cztM0_level2_quad_clean.evt
Size (bytes)920,701,44053,974,080
Size878.0 MB 51.5 MB
Events in quadrant A2,803,093374,405
Events in quadrant B8,536,110317,485
Events in quadrant C3,281,596360,750
Events in quadrant D12,906,885209,525

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113402
B0290981
C0129121
D0419531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528970.132350%
B5289244346.190206%
C5289971.833995%
D5289469388.731329%

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 7262 5290 1 1 0.01% 0.02%
B 7262 5290 1685 1685 23.20% 31.85%
C 7262 5290 71 71 0.98% 1.34%
D 7262 5290 4562 4562 62.82% 86.24%

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 79837 573.02 693 681 138.1
A 13 6 26308 185.52 693 681 138.1
A 9 143 17383 120.91 693 681 138.1
B 5 236 6091872 57804.12 557 543 105.4
B 5 172 166077 1570.85 557 543 105.4
B 5 200 29845 278.06 557 543 105.4
C 15 214 220819 1461.37 660 667 150.6
C 0 10 216542 1432.98 660 667 150.6
C 1 23 164767 1089.3 660 667 150.6
D 7 80 7558465 71464.02 431 419 105.8
D 8 195 3324790 31433.11 431 419 105.8
D 1 52 91738 863.45 431 419 105.8

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