ASTROSAT CZTI

Data Quality Report

Orbit 35973

Creation date: 2022-07-18T22:57:42.493755
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_050T19_9000005156_35973cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35973cztM0_level2_quad_clean.evt
Size (bytes)763,799,04090,633,600
Size728.4 MB 86.4 MB
Events in quadrant A2,488,135691,690
Events in quadrant B11,256,557428,036
Events in quadrant C4,771,263634,515
Events in quadrant D4,270,883630,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104372
B0369421
C0175541
D0161901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511090.176125%
B5110407679.765166%
C511065512.818004%
D51103005.870841%

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 7202 5111 0 0 0.00% 0.00%
B 7201 5110 3523 3523 48.92% 68.94%
C 7201 5110 533 533 7.40% 10.43%
D 7202 5111 252 252 3.50% 4.93%

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 132828 1093.98 604 593 120.9
A 15 169 11912 93.64 604 593 120.9
A 13 254 8195 62.89 604 593 120.9
B 5 31 6468847 82672.78 407 397 78.2
B 5 15 2092570 26739.91 407 397 78.2
B 5 172 438195 5595.46 407 397 78.2
C 9 187 2293047 18326.15 546 550 125.1
C 15 214 202072 1610.96 546 550 125.1
C 0 10 138969 1106.52 546 550 125.1
D 10 118 714656 5167.11 571 555 138.2
D 8 195 447914 3237.01 571 555 138.2
D 1 52 343171 2479.11 571 555 138.2

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