ASTROSAT CZTI

Data Quality Report

Orbit 40461

Creation date: 2024-06-27T22:16:23.637395
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_022T01_9000005540_40461cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40461cztM0_level2_quad_clean.evt
Size (bytes)324,034,56094,950,720
Size309.0 MB 90.6 MB
Events in quadrant A2,895,633662,278
Events in quadrant B2,787,330675,484
Events in quadrant C2,691,300627,696
Events in quadrant D3,215,060545,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116763
B0115372
C0109492
D0128922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5200160.307692%
B5200300.576923%
C5200350.673077%
D52003787.269231%

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 7323 5201 4 4 0.05% 0.08%
B 7323 5201 16 16 0.22% 0.31%
C 7323 5201 26 26 0.36% 0.50%
D 7323 5201 78 78 1.07% 1.50%

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 469258 3754.49 615 605 124.8
A 7 3 28053 219.89 615 605 124.8
A 2 79 10986 83.16 615 605 124.8
B 4 170 289191 2498.5 607 590 115.5
B 0 230 51449 440.3 607 590 115.5
B 0 229 30965 262.96 607 590 115.5
C 15 214 226144 1654.84 593 597 136.3
C 14 254 140279 1024.85 593 597 136.3
C 0 10 8900 60.92 593 597 136.3
D 12 227 331932 2371.49 573 558 139.7
D 2 250 223272 1593.86 573 558 139.7
D 12 128 183994 1312.77 573 558 139.7

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