ASTROSAT CZTI

Data Quality Report

Orbit 40846

Creation date: 2024-06-27T22:21:15.693997
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_104T02_9000005572_40846cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40846cztM0_level2_quad_clean.evt
Size (bytes)428,866,56089,386,560
Size409.0 MB 85.2 MB
Events in quadrant A3,311,495607,326
Events in quadrant B2,528,380621,454
Events in quadrant C3,489,231578,694
Events in quadrant D6,111,314507,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134873
B0114582
C0138392
D0221332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5597480.857602%
B5597190.339468%
C55971582.822941%
D559763911.416830%

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 7179 5598 34 34 0.47% 0.61%
B 7179 5598 5 5 0.07% 0.09%
C 7179 5598 121 121 1.69% 2.16%
D 7179 5598 670 670 9.33% 11.97%

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 518407 4090.16 614 602 126.6
A 13 248 295268 2327.58 614 602 126.6
A 2 79 72192 565.49 614 602 126.6
B 0 186 38066 312.75 609 592 119.8
B 0 190 31933 261.57 609 592 119.8
B 5 255 25085 204.42 609 592 119.8
C 14 254 442555 3204.23 589 593 137.9
C 10 70 332519 2406.46 589 593 137.9
C 15 214 234578 1696.39 589 593 137.9
D 12 79 3020662 21036.48 581 563 143.6
D 13 249 414012 2879.87 581 563 143.6
D 2 249 309910 2154.75 581 563 143.6

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