ASTROSAT CZTI

Data Quality Report

Orbit 41327

Creation date: 2024-06-27T22:27:37.809691
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_037T01_9000005652_41327cztM0_level2.fits modeM0/AS1A12_037T01_9000005652_41327cztM0_level2_quad_clean.evt
Size (bytes)311,941,44085,953,600
Size297.5 MB 82.0 MB
Events in quadrant A2,813,073581,521
Events in quadrant B2,524,404599,280
Events in quadrant C3,100,041536,422
Events in quadrant D2,699,811517,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115523
B0111182
C0125182
D0117352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5255150.285442%
B5255180.342531%
C52552604.947669%
D5255841.598478%

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 7048 5256 4 4 0.06% 0.08%
B 7048 5256 5 5 0.07% 0.10%
C 7048 5256 257 257 3.65% 4.89%
D 7048 5256 81 81 1.15% 1.54%

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 500900 4212.17 578 566 118.8
A 2 79 45225 375.97 578 566 118.8
A 12 189 15989 129.84 578 566 118.8
B 5 255 101224 888.18 575 557 113.3
B 0 190 77097 675.31 575 557 113.3
B 0 229 68393 598.51 575 557 113.3
C 0 10 731048 5670.57 543 547 128.8
C 15 214 219847 1702.33 543 547 128.8
C 9 54 19400 146.35 543 547 128.8
D 13 249 218408 1588.02 554 540 137.2
D 1 52 112059 812.85 554 540 137.2
D 5 222 87241 631.96 554 540 137.2

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