ASTROSAT CZTI

Data Quality Report

Orbit 38753

Creation date: 2024-06-27T21:55:59.922387
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_054T01_9000005392_38753cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38753cztM0_level2_quad_clean.evt
Size (bytes)337,786,56090,550,080
Size322.1 MB 86.4 MB
Events in quadrant A2,752,424619,053
Events in quadrant B2,549,408630,558
Events in quadrant C2,543,910597,398
Events in quadrant D4,254,088531,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112653
B0110772
C0107312
D0162372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518680.154261%
B5186651.253374%
C5186110.212110%
D51862625.052063%

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 7309 5187 8 8 0.11% 0.15%
B 7309 5187 41 41 0.56% 0.79%
C 7309 5187 7 7 0.10% 0.13%
D 7309 5187 193 193 2.64% 3.72%

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 400393 3345.69 590 579 119.5
A 13 248 34008 279.74 590 579 119.5
A 9 143 20969 170.63 590 579 119.5
B 15 85 102175 907.83 584 570 111.9
B 5 184 95068 844.33 584 570 111.9
B 0 230 22524 196.16 584 570 111.9
C 15 214 233437 1753.16 571 575 132.8
C 0 10 43227 321.12 571 575 132.8
C 15 208 25239 185.69 571 575 132.8
D 2 16 1518437 11022.45 561 546 137.7
D 5 222 184846 1338.33 561 546 137.7
D 12 227 104181 752.57 561 546 137.7

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