ASTROSAT CZTI

Data Quality Report

Orbit 12447

Creation date: 2024-06-27T16:27:30.465457
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/AS1A04_174T01_9000001850_12447cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12447cztM0_level2_quad_clean.evt
Size (bytes)576,532,80093,240,000
Size549.8 MB 88.9 MB
Events in quadrant A5,963,877602,791
Events in quadrant B4,344,655595,181
Events in quadrant C3,070,453621,218
Events in quadrant D3,663,873573,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221233
B0168582
C0128942
D0150172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61791141.844959%
B61794627.476938%
C6179100.161838%
D6180671.084142%

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 7525 6181 1 1 0.01% 0.02%
B 7524 6180 359 359 4.77% 5.81%
C 7525 6181 0 0 0.00% 0.00%
D 7526 6181 52 52 0.69% 0.84%

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 0 23 2071182 12888.96 792 778 160.6
A 1 162 202318 1254.65 792 778 160.6
A 0 226 155599 963.81 792 778 160.6
B 4 239 1035604 7120.25 777 758 145.3
B 3 64 82986 565.77 777 758 145.3
B 0 187 38886 262.34 777 758 145.3
C 13 61 5804 27.76 785 793 180.5
C 12 4 4569 20.92 785 793 180.5
C 0 207 4060 18.1 785 793 180.5
D 1 52 343668 1878.95 765 748 182.5
D 13 104 176434 962.63 765 748 182.5
D 7 71 106909 581.68 765 748 182.5

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