ASTROSAT CZTI

Data Quality Report

Orbit 35513

Creation date: 2022-04-23T16:50:55.728090
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_097T07_9000005084_35513cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35513cztM0_level2_quad_clean.evt
Size (bytes)420,595,20074,433,600
Size401.1 MB 71.0 MB
Events in quadrant A2,817,213464,551
Events in quadrant B3,064,202468,629
Events in quadrant C3,352,133461,441
Events in quadrant D3,098,411442,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121563
B0129292
C0134582
D0130732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596860.100536%
B5968570.955094%
C5968901.508043%
D5968601.005362%

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 8805 5970 0 0 0.00% 0.00%
B 8805 5970 33 33 0.37% 0.55%
C 8805 5970 56 56 0.64% 0.94%
D 8805 5970 47 47 0.53% 0.79%

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 142792 1019.47 690 674 139.4
A 13 254 8833 58.53 690 674 139.4
A 3 137 7197 46.79 690 674 139.4
B 5 172 260394 1951.88 683 664 133.1
B 5 236 50080 371.36 683 664 133.1
B 5 200 45859 339.64 683 664 133.1
C 15 214 247538 1557.06 670 673 158.5
C 0 10 242107 1522.81 670 673 158.5
C 0 207 219980 1383.25 670 673 158.5
D 10 118 121360 739.06 667 650 163.3
D 7 223 106515 648.17 667 650 163.3
D 8 195 90209 548.33 667 650 163.3

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