ASTROSAT CZTI

Data Quality Report

Orbit 34885

Creation date: 2022-03-12T05:00:31.150461
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/AS1C07_005T01_9000004992_34885cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34885cztM0_level2_quad_clean.evt
Size (bytes)434,424,96078,393,600
Size414.3 MB 74.8 MB
Events in quadrant A2,623,400517,384
Events in quadrant B3,092,367529,251
Events in quadrant C2,914,677507,660
Events in quadrant D4,188,579470,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107683
B0123272
C0115302
D0159922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4973641.286950%
B4973651.307058%
C4973591.186407%
D49732154.323346%

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 7036 4974 42 42 0.60% 0.84%
B 7036 4974 42 42 0.60% 0.84%
C 7036 4974 54 54 0.77% 1.09%
D 7036 4974 198 198 2.81% 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 15 237 163745 1346.21 614 604 121.2
A 10 83 57434 468.95 614 604 121.2
A 13 6 14186 112.08 614 604 121.2
B 5 172 258486 2264.98 617 603 113.9
B 0 190 130079 1137.18 617 603 113.9
B 4 171 73984 644.5 617 603 113.9
C 15 214 223993 1635.43 596 600 136.6
C 0 10 158510 1156.04 596 600 136.6
C 0 207 118019 859.61 596 600 136.6
D 8 195 784958 5011.51 582 570 156.5
D 1 47 294715 1879.31 582 570 156.5
D 2 31 283233 1805.95 582 570 156.5

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