ASTROSAT CZTI

Data Quality Report

Orbit 20240320_T05_186T01_9000006130_level2

Creation date: 2024-03-22T11:25:25.303296
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/AS1T05_186T01_9000006130cztM0_level2.fits modeM0/AS1T05_186T01_9000006130cztM0_level2_quad_clean.evt
Size (bytes)700,603,200683,910,720
Size668.1 MB 652.2 MB
Events in quadrant A4,202,5524,254,368
Events in quadrant B3,668,8323,197,774
Events in quadrant C4,367,2464,406,535
Events in quadrant D3,453,1123,342,143

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02777920
B03796860
C01670930
D02979970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016350
B016360
C016370
D016340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8033447195.874225%
B803252209427.505758%
C803556120.761620%
D803351111313.833323%

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 90486 80366 0 0 0.00% 0.00%
B 90485 80204 0 0 0.00% 0.00%
C 90485 80382 0 0 0.00% 0.00%
D 90485 80135 0 0 0.00% 0.00%

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 7 110 3429 8.74 1096 1023 275.3
A 0 29 3347 8.44 1096 1023 275.3
A 15 236 3310 8.31 1096 1023 275.3
B 2 9 3389 12.93 970 922 190.8
B 2 8 2716 9.4 970 922 190.8
B 3 17 2612 8.86 970 922 190.8
C 1 81 3337 7.55 1156 1073 299.9
C 3 202 3272 7.33 1156 1073 299.9
C 1 80 3222 7.16 1156 1073 299.9
D 10 189 2537 5.91 994 901 276.8
D 7 3 2535 5.9 994 901 276.8
D 12 6 2474 5.68 994 901 276.8

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