ASTROSAT CZTI

Data Quality Report

Orbit 40677

Creation date: 2024-06-27T22:19:02.258512
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_029T02_9000005558_40677cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40677cztM0_level2_quad_clean.evt
Size (bytes)325,687,68087,520,320
Size310.6 MB 83.5 MB
Events in quadrant A3,011,048597,524
Events in quadrant B2,997,040610,667
Events in quadrant C3,204,385589,457
Events in quadrant D2,451,466500,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120513
B0122362
C0126532
D0108182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5024711.413217%
B50241723.423567%
C5024971.930732%
D50244078.101115%

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 7058 5025 56 56 0.79% 1.11%
B 7058 5025 117 117 1.66% 2.33%
C 7058 5025 94 94 1.33% 1.87%
D 7058 5024 29 29 0.41% 0.58%

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 459691 3961.36 565 554 115.9
A 13 248 214493 1845.83 565 554 115.9
A 6 10 129146 1109.47 565 554 115.9
B 5 255 359998 3333.09 564 549 107.8
B 0 229 265799 2459.6 564 549 107.8
B 0 230 78524 723.04 564 549 107.8
C 9 187 689029 5360.95 553 556 128.4
C 15 214 218950 1700.57 553 556 128.4
C 14 254 76259 589.48 553 556 128.4
D 12 191 140859 1098.69 521 505 127.7
D 2 250 87952 684.54 521 505 127.7
D 2 153 55388 429.63 521 505 127.7

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