ASTROSAT CZTI

Data Quality Report

Orbit 39277

Creation date: 2024-06-27T22:02:37.627995
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_9000005456_39277cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39277cztM0_level2_quad_clean.evt
Size (bytes)558,840,96087,912,000
Size533.0 MB 83.8 MB
Events in quadrant A4,987,774581,698
Events in quadrant B3,019,835648,264
Events in quadrant C2,726,016619,683
Events in quadrant D9,512,435414,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183593
B0125812
C0114652
D0322132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A567857610.144417%
B5678701.232828%
C567870.123283%
D5678199635.153223%

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 7139 5679 422 422 5.91% 7.43%
B 7139 5679 40 40 0.56% 0.70%
C 7139 5679 0 0 0.00% 0.00%
D 7139 5679 1761 1761 24.67% 31.01%

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 15 222 2123466 16734.72 618 605 126.9
A 10 83 424525 3341.8 618 605 126.9
A 13 248 35743 277.0 618 605 126.9
B 5 172 323161 2593.33 636 618 124.4
B 0 189 88887 709.71 636 618 124.4
B 0 190 79481 634.08 636 618 124.4
C 15 214 242492 1636.28 629 630 147.8
C 3 233 23631 155.61 629 630 147.8
C 0 10 7397 45.78 629 630 147.8
D 12 235 5849160 43356.43 546 530 134.9
D 12 227 1120143 8299.79 546 530 134.9
D 2 249 161826 1195.7 546 530 134.9

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