ASTROSAT CZTI

Data Quality Report

Orbit 36418

Creation date: 2024-06-27T21:26:33.921978
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/AS1T04_084T01_9000005198_36418cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36418cztM0_level2_quad_clean.evt
Size (bytes)469,771,20058,129,920
Size448.0 MB 55.4 MB
Events in quadrant A3,007,040354,829
Events in quadrant B4,464,966348,122
Events in quadrant C3,095,546340,501
Events in quadrant D3,288,390333,720

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123043
B0167302
C0122202
D0133002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546590.164684%
B54655099.313815%
C54651021.866423%
D5465901.646844%

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 7348 5466 1 1 0.01% 0.02%
B 7348 5466 375 375 5.10% 6.86%
C 7348 5466 78 78 1.06% 1.43%
D 7348 5466 71 71 0.97% 1.30%

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 194538 1423.76 676 664 136.2
A 10 83 187015 1368.52 676 664 136.2
A 13 254 9243 63.0 676 664 136.2
B 5 172 1386903 11253.18 636 619 123.2
B 5 236 158529 1281.84 636 619 123.2
B 0 189 152869 1235.89 636 619 123.2
C 0 10 347225 2321.39 640 644 149.3
C 15 214 235670 1574.2 640 644 149.3
C 1 241 16206 104.23 640 644 149.3
D 2 249 227092 1430.58 653 634 158.3
D 10 199 103681 650.97 653 634 158.3
D 12 6 101989 640.28 653 634 158.3

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