ASTROSAT CZTI

Data Quality Report

Orbit 41792

Creation date: 2024-06-27T22:32:51.832478
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_052T04_9000005700_41792cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41792cztM0_level2_quad_clean.evt
Size (bytes)311,978,88090,138,240
Size297.5 MB 86.0 MB
Events in quadrant A2,851,648618,195
Events in quadrant B2,497,331627,865
Events in quadrant C3,029,136573,618
Events in quadrant D2,778,040557,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113193
B0105702
C0118942
D0115632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5031110.218644%
B5031160.318028%
C50312314.591532%
D5031561.113099%

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 7003 5032 3 3 0.04% 0.06%
B 7003 5032 7 7 0.10% 0.14%
C 7003 5032 228 228 3.26% 4.53%
D 7003 5032 54 54 0.77% 1.07%

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 533119 4444.19 592 581 119.8
A 2 79 17221 138.87 592 581 119.8
A 13 254 8326 64.63 592 581 119.8
B 4 171 89172 792.2 582 566 111.8
B 0 186 40200 354.36 582 566 111.8
B 0 245 34017 299.08 582 566 111.8
C 0 10 642825 5010.26 558 563 128.2
C 15 214 203886 1586.12 558 563 128.2
C 12 249 4304 29.18 558 563 128.2
D 12 79 252954 1795.11 578 561 140.6
D 13 249 197540 1400.99 578 561 140.6
D 2 249 31843 222.49 578 561 140.6

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