ASTROSAT CZTI

Data Quality Report

Orbit 40462

Creation date: 2024-06-27T22:16:24.560292
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_40462cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40462cztM0_level2_quad_clean.evt
Size (bytes)314,438,40088,433,280
Size299.9 MB 84.3 MB
Events in quadrant A2,762,401616,862
Events in quadrant B2,481,021632,384
Events in quadrant C2,818,569588,624
Events in quadrant D3,178,621481,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113523
B0106542
C0114362
D0129272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5109140.274026%
B5109210.411039%
C5109480.939518%
D510974614.601683%

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 7232 5110 4 4 0.06% 0.08%
B 7232 5110 10 10 0.14% 0.20%
C 7232 5110 45 45 0.62% 0.88%
D 7231 5109 171 171 2.36% 3.35%

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 466196 3964.54 582 572 117.4
A 7 3 24736 205.74 582 572 117.4
A 2 79 8673 68.98 582 572 117.4
B 4 170 96139 868.01 576 560 110.1
B 0 230 55359 497.66 576 560 110.1
B 5 255 45925 411.99 576 560 110.1
C 14 254 365683 2804.33 566 568 130.2
C 15 214 223425 1711.69 566 568 130.2
C 9 54 12847 94.31 566 568 130.2
D 12 227 388457 3017.58 525 510 128.6
D 2 250 234044 1816.5 525 510 128.6
D 12 128 170293 1320.62 525 510 128.6

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