ASTROSAT CZTI

Data Quality Report

Orbit 40172

Creation date: 2024-06-27T22:13:25.897278
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/AS1A12_068T01_9000005526_40172cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40172cztM0_level2_quad_clean.evt
Size (bytes)14,878,0801,212,480
Size14.2 MB 1.2 MB
Events in quadrant A115,1956,333
Events in quadrant B73,1007,555
Events in quadrant C258,280595
Events in quadrant D90,7295,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04311
B02831
C08541
D03481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12532.400000%
B12564.800000%
C1259072.000000%
D12586.400000%

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 125 125 1 1 0.80% 0.80%
B 125 125 4 4 3.20% 3.20%
C 125 125 88 88 70.40% 70.40%
D 125 125 7 7 5.60% 5.60%

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 53593 10705.91 15 14 5.0
A 10 67 1362 269.35 15 14 5.0
A 2 79 514 99.91 15 14 5.0
B 5 172 10682 2149.69 15 15 5.0
B 4 171 704 138.85 15 15 5.0
B 0 245 454 88.47 15 15 5.0
C 9 187 194942 49204.15 10 10 4.0
C 0 10 15412 3887.73 10 10 4.0
C 15 214 4773 1202.26 10 10 4.0
D 13 249 22806 4319.24 14 14 5.3
D 12 227 7260 1373.17 14 14 5.3
D 3 238 1782 335.05 14 14 5.3

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