ASTROSAT CZTI

Data Quality Report

Orbit 40021

Creation date: 2024-06-27T22:11:22.257518
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_054T03_9000005516_40021cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40021cztM0_level2_quad_clean.evt
Size (bytes)319,841,28089,887,680
Size305.0 MB 85.7 MB
Events in quadrant A2,984,897596,010
Events in quadrant B2,708,930612,836
Events in quadrant C2,685,607591,491
Events in quadrant D3,035,272539,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124653
B0118402
C0114752
D0128742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5451480.880572%
B5451470.862227%
C5451430.788846%
D5451941.724454%

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 7094 5452 30 30 0.42% 0.55%
B 7094 5452 20 20 0.28% 0.37%
C 7094 5452 30 30 0.42% 0.55%
D 7094 5452 88 88 1.24% 1.61%

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 464904 3813.03 593 581 121.8
A 13 248 116959 955.7 593 581 121.8
A 7 3 24363 195.3 593 581 121.8
B 4 171 296461 2527.27 594 578 117.1
B 4 81 35580 298.97 594 578 117.1
B 0 230 20967 174.15 594 578 117.1
C 15 214 225741 1639.83 583 587 137.3
C 14 254 150296 1090.35 583 587 137.3
C 10 20 15551 108.99 583 587 137.3
D 12 227 423932 2955.5 578 562 143.2
D 2 31 133670 929.21 578 562 143.2
D 2 250 128875 895.74 578 562 143.2

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