ASTROSAT CZTI

Data Quality Report

Orbit 34987

Creation date: 2022-03-19T19:23:06.112440
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_123T11_9000005014_34987cztM0_level2.evt modeM0/AS1A10_123T11_9000005014_34987cztM0_level2_quad_clean.evt
Size (bytes)447,989,76099,599,040
Size427.2 MB 95.0 MB
Events in quadrant A2,541,122671,479
Events in quadrant B3,121,648683,911
Events in quadrant C2,903,799691,838
Events in quadrant D4,659,950616,896

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106503
B0123832
C0115752
D0171922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5024110.218949%
B50241543.065287%
C5024811.612261%
D50244739.414809%

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 9151 5026 1 1 0.01% 0.02%
B 9151 5026 110 110 1.20% 2.19%
C 9151 5026 70 70 0.76% 1.39%
D 9151 5026 448 448 4.90% 8.91%

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 72083 569.16 630 619 125.6
A 9 143 30514 238.09 630 619 125.6
A 13 254 8200 60.37 630 619 125.6
B 5 172 505680 4224.15 629 612 119.6
B 5 173 46348 382.51 629 612 119.6
B 3 112 44021 363.05 629 612 119.6
C 0 10 219445 1512.1 629 635 144.7
C 15 214 209429 1442.88 629 635 144.7
C 14 67 16087 106.78 629 635 144.7
D 8 195 1121303 7839.89 590 575 143.0
D 10 118 650248 4544.69 590 575 143.0
D 8 230 228189 1592.24 590 575 143.0

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