ASTROSAT CZTI

Data Quality Report

Orbit 36157

Creation date: 2022-06-06T02:16:41.023026
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_059T08_9000005160_36157cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36157cztM0_level2_quad_clean.evt
Size (bytes)425,629,44089,421,120
Size405.9 MB 85.3 MB
Events in quadrant A2,590,844586,729
Events in quadrant B3,037,671618,478
Events in quadrant C3,456,453581,799
Events in quadrant D3,451,143555,871

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110133
B0122992
C0134322
D0138512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522080.153257%
B5220741.417625%
C52201693.237548%
D52202464.712644%

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 7043 5221 1 1 0.01% 0.02%
B 7043 5221 41 41 0.58% 0.79%
C 7043 5221 132 132 1.87% 2.53%
D 7043 5220 187 187 2.66% 3.58%

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 170851 1351.95 619 607 125.9
A 9 143 15869 121.2 619 607 125.9
A 13 254 8527 62.89 619 607 125.9
B 5 172 301850 2500.81 627 611 120.5
B 0 246 110012 908.22 627 611 120.5
B 0 213 78187 644.02 627 611 120.5
C 0 207 549378 3886.19 608 613 141.2
C 15 214 217571 1536.43 608 613 141.2
C 0 10 178063 1256.65 608 613 141.2
D 1 52 382297 2626.25 597 581 145.3
D 12 17 338226 2323.04 597 581 145.3
D 13 249 127282 871.72 597 581 145.3

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