ASTROSAT CZTI

Data Quality Report

Orbit 42689

Creation date: 2024-06-27T22:43:04.333536
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/AS1A05_013T01_9000005822_42689cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42689cztM0_level2_quad_clean.evt
Size (bytes)327,715,20086,080,320
Size312.5 MB 82.1 MB
Events in quadrant A3,011,289585,743
Events in quadrant B2,336,366605,190
Events in quadrant C2,829,835569,472
Events in quadrant D3,549,273482,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120482
B0105372
C0115202
D0141502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5186621.195526%
B518540.077146%
C5185110.212150%
D51854618.891032%

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 7009 5187 46 46 0.66% 0.89%
B 7008 5186 2 2 0.03% 0.04%
C 7008 5186 4 4 0.06% 0.08%
D 7008 5186 398 398 5.68% 7.67%

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 535019 4531.68 573 562 117.9
A 13 248 190463 1610.18 573 562 117.9
A 15 237 51794 434.4 573 562 117.9
B 3 112 18094 157.96 572 555 111.0
B 0 245 17859 155.84 572 555 111.0
B 5 172 16336 142.13 572 555 111.0
C 8 79 316252 2449.43 556 560 128.9
C 15 214 217918 1686.47 556 560 128.9
C 3 233 47137 361.39 556 560 128.9
D 1 52 790663 6242.77 523 508 126.6
D 2 249 364590 2876.5 523 508 126.6
D 13 249 191890 1512.05 523 508 126.6

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