ASTROSAT CZTI

Data Quality Report

Orbit 24894

Creation date: 2024-06-27T19:11:08.420727
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/AS1A08_003T13_9000003646_24894cztM0_level2.evt modeM0/AS1A08_003T13_9000003646_24894cztM0_level2_quad_clean.evt
Size (bytes)354,548,16063,305,280
Size338.1 MB 60.4 MB
Events in quadrant A2,437,642401,746
Events in quadrant B2,483,295414,528
Events in quadrant C2,526,104384,629
Events in quadrant D2,956,770371,923

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103131
B0103671
C0106051
D0118541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4895240.490296%
B4895310.633299%
C4895480.980592%
D4895210.429009%

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 6110 4896 0 0 0.00% 0.00%
B 6110 4896 0 0 0.00% 0.00%
C 6110 4896 1 1 0.02% 0.02%
D 6110 4896 12 12 0.20% 0.25%

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 4 2 35061 272.25 623 610 126.5
A 13 254 7791 56.75 623 610 126.5
A 3 137 5762 40.71 623 610 126.5
B 12 111 14282 114.54 622 606 119.4
B 11 111 13021 103.98 622 606 119.4
B 4 80 12526 99.83 622 606 119.4
C 14 238 95382 672.15 597 603 141.0
C 7 247 79656 560.63 597 603 141.0
C 2 16 12768 86.27 597 603 141.0
D 7 238 453866 3128.95 596 580 144.9
D 1 52 100043 686.58 596 580 144.9
D 8 195 97354 668.01 596 580 144.9

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