ASTROSAT CZTI

Data Quality Report

Orbit 47755

Creation date: 2024-07-27T22:04:06.202624
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/AS1C09_004T04_9000006346_47755cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47755cztM0_level2_quad_clean.evt
Size (bytes)543,384,000107,040,960
Size518.2 MB 102.1 MB
Events in quadrant A7,239,908729,827
Events in quadrant B3,713,715736,112
Events in quadrant C4,854,289642,942
Events in quadrant D3,776,076654,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261050
B0157310
C0195640
D0162380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68401842.690058%
B6840821.198830%
C684074310.862573%
D68401632.383041%

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 6840 6840 18 18 0.26% 0.26%
B 6840 6840 23 23 0.34% 0.34%
C 6840 6840 555 555 8.11% 8.11%
D 6840 6840 99 99 1.45% 1.45%

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 4160491 26325.3 754 737 158.0
A 9 191 51672 322.35 754 737 158.0
A 13 248 50512 315.0 754 737 158.0
B 0 200 172340 1165.48 749 724 147.2
B 0 190 142735 964.42 749 724 147.2
B 12 48 76504 514.63 749 724 147.2
C 12 2 1858838 11264.27 697 700 165.0
C 14 254 229802 1388.85 697 700 165.0
C 12 250 15668 90.74 697 700 165.0
D 2 249 170295 912.28 743 720 185.9
D 12 233 149685 801.4 743 720 185.9
D 12 2 138337 740.35 743 720 185.9

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