ASTROSAT CZTI

Data Quality Report

Orbit 38482

Creation date: 2024-06-27T21:53:21.910522
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_018T01_9000005386_38482cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38482cztM0_level2_quad_clean.evt
Size (bytes)404,331,84098,340,480
Size385.6 MB 93.8 MB
Events in quadrant A3,112,838668,019
Events in quadrant B3,998,834652,932
Events in quadrant C2,853,510652,500
Events in quadrant D4,534,007584,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129563
B0160222
C0122622
D0176592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6015150.249377%
B60152994.970906%
C6015120.199501%
D60153175.270158%

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 7298 6016 8 8 0.11% 0.13%
B 7298 6016 234 234 3.21% 3.89%
C 7298 6016 6 6 0.08% 0.10%
D 7298 6016 306 306 4.19% 5.09%

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 427765 3166.49 665 652 134.9
A 12 189 48106 351.81 665 652 134.9
A 13 6 24138 174.12 665 652 134.9
B 8 3 627914 5019.4 649 631 125.0
B 4 171 495590 3960.57 649 631 125.0
B 5 184 167010 1331.33 649 631 125.0
C 15 214 251680 1641.04 653 655 153.0
C 0 10 41059 264.14 653 655 153.0
C 14 254 10664 65.43 653 655 153.0
D 2 250 735563 4770.21 640 624 154.1
D 12 227 416087 2696.61 640 624 154.1
D 7 223 342347 2217.99 640 624 154.1

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