ASTROSAT CZTI

Data Quality Report

Orbit 24966

Creation date: 2024-06-27T19:12:02.939123
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/AS1T03_200T01_9000003654_24966cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24966cztM0_level2_quad_clean.evt
Size (bytes)473,316,480129,576,960
Size451.4 MB 123.6 MB
Events in quadrant A3,027,486877,165
Events in quadrant B3,595,851895,197
Events in quadrant C3,639,813866,678
Events in quadrant D3,637,224839,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133392
B0150332
C0149422
D0151902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638590.140955%
B63851682.631167%
C6385901.409554%
D6385410.642130%

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 7565 6386 1 1 0.01% 0.02%
B 7565 6386 75 75 0.99% 1.17%
C 7565 6386 3 3 0.04% 0.05%
D 7565 6386 8 8 0.11% 0.13%

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 13 254 10231 60.69 781 765 156.0
A 4 2 7424 42.7 781 765 156.0
A 0 226 6691 38.0 781 765 156.0
B 3 64 324922 2244.28 780 760 144.4
B 4 80 92611 635.91 780 760 144.4
B 0 190 52339 357.1 780 760 144.4
C 7 247 461348 2611.6 765 772 176.4
C 14 238 121972 687.24 765 772 176.4
C 3 233 39473 219.45 765 772 176.4
D 1 52 401106 2206.49 763 743 181.4
D 8 195 289433 1591.03 763 743 181.4
D 2 234 25135 134.43 763 743 181.4

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