ASTROSAT CZTI

Data Quality Report

Orbit 41848

Creation date: 2024-06-27T22:33:33.089368
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_099T04_9000005708_41848cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41848cztM0_level2_quad_clean.evt
Size (bytes)372,214,08091,497,600
Size355.0 MB 87.3 MB
Events in quadrant A4,319,150612,384
Events in quadrant B2,690,467638,496
Events in quadrant C3,159,428580,310
Events in quadrant D3,175,513549,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165622
B0119422
C0128172
D0135462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55692374.255701%
B5569721.292871%
C55692234.004310%
D55691743.124439%

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 7300 5570 159 159 2.18% 2.85%
B 7300 5570 50 50 0.68% 0.90%
C 7300 5570 217 217 2.97% 3.90%
D 7300 5570 175 175 2.40% 3.14%

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 14 24 1074650 8591.43 604 590 125.0
A 10 83 546568 4367.29 604 590 125.0
A 2 79 358102 2859.75 604 590 125.0
B 3 112 166085 1425.96 608 591 116.1
B 5 255 73252 626.07 608 591 116.1
B 0 186 52263 445.23 608 591 116.1
C 0 10 623130 4596.67 586 588 135.4
C 15 214 221128 1628.4 586 588 135.4
C 0 207 27560 199.15 586 588 135.4
D 2 249 514936 3550.94 592 574 144.9
D 13 249 207441 1428.12 592 574 144.9
D 12 6 112963 775.89 592 574 144.9

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