ASTROSAT CZTI

Data Quality Report

Orbit 01130

Creation date: 2024-06-27T14:07:58.472023
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/AS1P01_997T01_9000000214_01130cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01130cztM0_level2_quad_clean.evt
Size (bytes)945,420,48092,741,760
Size901.6 MB 88.4 MB
Events in quadrant A7,118,376614,712
Events in quadrant B7,357,896611,649
Events in quadrant C7,035,708584,698
Events in quadrant D6,722,253579,041

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254152
B0261751
C0251521
D0242661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5999200.333389%
B5999230.383397%
C599980.133356%
D5999901.500250%

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 7064 5999 215 215 3.04% 3.58%
B 7063 5998 216 216 3.06% 3.60%
C 7064 6000 148 148 2.10% 2.47%
D 7064 5999 231 231 3.27% 3.85%

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 11 242 9256 16.66 1852 1862 443.9
A 11 79 6727 10.96 1852 1862 443.9
A 3 111 5685 8.61 1852 1862 443.9
B 15 22 82724 181.95 1885 1892 444.2
B 5 249 28149 59.1 1885 1892 444.2
B 15 85 23924 49.59 1885 1892 444.2
C 15 241 321848 680.27 1699 1756 470.5
C 0 236 22540 44.17 1699 1756 470.5
C 3 111 20134 39.06 1699 1756 470.5
D 10 125 205415 391.87 1669 1730 519.8
D 7 67 191316 364.74 1669 1730 519.8
D 10 85 70250 131.82 1669 1730 519.8

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