ASTROSAT CZTI

Data Quality Report

Orbit 36191

Creation date: 2022-06-08T15:58:48.486958
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/AS1A11_097T17_9000005170_36191cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36191cztM0_level2_quad_clean.evt
Size (bytes)385,329,60051,140,160
Size367.5 MB 48.8 MB
Events in quadrant A2,427,672304,931
Events in quadrant B2,475,102311,851
Events in quadrant C3,281,466299,367
Events in quadrant D3,146,481282,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102803
B0105312
C0128452
D0128742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4979120.241012%
B4979250.502109%
C49791292.590882%
D49791843.695521%

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 6951 4980 5 5 0.07% 0.10%
B 6951 4980 13 13 0.19% 0.26%
C 6951 4980 105 105 1.51% 2.11%
D 6951 4980 157 157 2.26% 3.15%

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 165370 1423.82 573 562 115.8
A 8 144 20791 174.76 573 562 115.8
A 13 6 14339 119.02 573 562 115.8
B 5 172 180418 1628.51 572 557 110.4
B 5 236 17203 150.72 572 557 110.4
B 12 111 13755 119.5 572 557 110.4
C 4 254 520237 4013.1 555 558 129.5
C 0 10 271136 2089.47 555 558 129.5
C 15 214 228379 1759.29 555 558 129.5
D 1 52 261648 1930.24 548 533 135.3
D 13 249 257137 1896.89 548 533 135.3
D 2 250 130798 962.96 548 533 135.3

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