ASTROSAT CZTI

Data Quality Report

Orbit 10651

Creation date: 2024-06-27T16:02:00.456262
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/AS1T01_191T01_9000001536_10651cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10651cztM0_level2_quad_clean.evt
Size (bytes)458,236,80082,961,280
Size437.0 MB 79.1 MB
Events in quadrant A2,698,755564,153
Events in quadrant B4,498,745536,045
Events in quadrant C2,539,917558,133
Events in quadrant D3,772,735475,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115892
B0169951
C0111831
D0148531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5401350.648028%
B540158210.775782%
C540150.092575%
D54014398.128124%

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 6681 5402 12 12 0.18% 0.22%
B 6681 5402 411 411 6.15% 7.61%
C 6681 5402 0 0 0.00% 0.00%
D 6681 5402 417 417 6.24% 7.72%

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 15 223 47721 343.51 664 653 137.0
A 15 239 27445 195.53 664 653 137.0
A 1 162 14825 103.43 664 653 137.0
B 4 239 1860292 14985.32 646 635 124.1
B 6 51 58059 462.73 646 635 124.1
B 0 219 34768 275.05 646 635 124.1
C 4 254 27402 181.69 635 642 147.3
C 14 234 22206 146.41 635 642 147.3
C 4 175 9032 56.96 635 642 147.3
D 1 20 1165409 7963.73 594 579 146.3
D 2 16 154784 1054.27 594 579 146.3
D 13 104 68801 466.42 594 579 146.3

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