ASTROSAT CZTI

Data Quality Report

Orbit 21899

Creation date: 2024-06-27T18:33:38.362766
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/AS1A07_010T05_9000003236_21899cztM0_level2.evt modeM0/AS1A07_010T05_9000003236_21899cztM0_level2_quad_clean.evt
Size (bytes)223,453,44042,102,720
Size213.1 MB 40.2 MB
Events in quadrant A1,641,416273,268
Events in quadrant B1,693,688276,294
Events in quadrant C1,571,600257,671
Events in quadrant D1,655,772254,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068541
B070091
C066561
D070801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2988120.401606%
B2988170.568942%
C2988290.970549%
D298860.200803%

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 2988 2988 0 0 0.00% 0.00%
B 2988 2988 2 2 0.07% 0.07%
C 2988 2988 0 0 0.00% 0.00%
D 2988 2988 2 2 0.07% 0.07%

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 5 16 21052 246.07 420 415 83.9
A 13 254 5685 62.84 420 415 83.9
A 0 226 3830 40.72 420 415 83.9
B 0 197 26811 342.75 416 409 77.0
B 0 190 12334 154.81 416 409 77.0
B 3 64 11429 143.06 416 409 77.0
C 14 238 63694 710.61 386 388 89.1
C 13 61 2763 26.65 386 388 89.1
C 10 22 2344 21.95 386 388 89.1
D 12 227 70956 748.62 394 384 94.3
D 13 104 24703 257.97 394 384 94.3
D 7 238 18105 187.98 394 384 94.3

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