ASTROSAT CZTI

Data Quality Report

Orbit 37621

Creation date: 2024-06-27T21:42:18.041111
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/AS1A11_075T01_9000005342_37621cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37621cztM0_level2_quad_clean.evt
Size (bytes)536,328,00095,598,720
Size511.5 MB 91.2 MB
Events in quadrant A7,086,878583,713
Events in quadrant B2,834,341666,364
Events in quadrant C2,924,093664,433
Events in quadrant D3,049,674620,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246693
B0118152
C0117582
D0124912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5135107921.012658%
B5135200.389484%
C5135541.051607%
D5135671.304771%

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 7138 5136 990 990 13.87% 19.28%
B 7137 5134 4 4 0.06% 0.08%
C 7137 5134 43 43 0.60% 0.84%
D 7137 5134 53 53 0.74% 1.03%

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 15 222 4326425 35752.22 602 590 121.0
A 10 83 301843 2489.8 602 590 121.0
A 9 143 81693 670.3 602 590 121.0
B 0 189 108528 894.15 645 628 120.7
B 4 232 80267 659.95 645 628 120.7
B 0 230 36643 298.45 645 628 120.7
C 15 214 235500 1606.86 637 643 146.2
C 0 10 181609 1238.15 637 643 146.2
C 12 250 11286 72.82 637 643 146.2
D 12 233 254660 1677.5 631 616 151.4
D 2 153 116842 767.46 631 616 151.4
D 2 250 73522 481.41 631 616 151.4

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