ASTROSAT CZTI

Data Quality Report

Orbit 37708

Creation date: 2024-06-27T21:43:24.634897
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_37708cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37708cztM0_level2_quad_clean.evt
Size (bytes)486,158,40075,297,600
Size463.6 MB 71.8 MB
Events in quadrant A5,070,887472,220
Events in quadrant B2,883,283495,662
Events in quadrant C2,870,306492,669
Events in quadrant D3,556,596465,186

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184293
B0116162
C0114862
D0139072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50504368.633663%
B5050631.247525%
C5050440.871287%
D50502214.376238%

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 7083 5051 387 387 5.46% 7.66%
B 7082 5049 47 47 0.66% 0.93%
C 7082 5049 37 37 0.52% 0.73%
D 7082 5049 201 201 2.84% 3.98%

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 2216376 17464.57 641 631 126.9
A 10 83 310807 2444.82 641 631 126.9
A 9 143 37970 294.31 641 631 126.9
B 5 172 200120 1657.4 644 629 120.4
B 5 200 34102 278.1 644 629 120.4
B 0 230 32538 265.1 644 629 120.4
C 15 214 229641 1581.17 637 645 144.8
C 0 10 144899 996.05 637 645 144.8
C 13 61 4511 26.69 637 645 144.8
D 12 227 354407 2341.82 627 610 151.1
D 2 250 263345 1739.07 627 610 151.1
D 2 153 183359 1209.63 627 610 151.1

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