ASTROSAT CZTI

Data Quality Report

Orbit 35619

Creation date: 2022-05-02T15:52:43.542842
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/AS1T05_028T01_9000005100_35619cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35619cztM0_level2_quad_clean.evt
Size (bytes)489,663,36060,376,320
Size467.0 MB 57.6 MB
Events in quadrant A3,387,643363,590
Events in quadrant B3,795,100365,472
Events in quadrant C4,013,659361,254
Events in quadrant D3,258,167350,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136993
B0149172
C0153782
D0132922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5531711.283674%
B55312454.429579%
C55313155.695173%
D55311081.952631%

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 5532 42 42 0.58% 0.76%
B 7202 5532 156 156 2.17% 2.82%
C 7202 5532 250 250 3.47% 4.52%
D 7202 5532 68 68 0.94% 1.23%

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 7 16 694713 5323.21 641 628 130.4
A 10 83 147826 1128.92 641 628 130.4
A 15 169 43741 330.65 641 628 130.4
B 5 172 1084162 8871.64 633 614 122.1
B 15 85 70160 569.41 633 614 122.1
B 0 189 65617 532.21 633 614 122.1
C 0 10 1086494 7624.58 611 614 142.4
C 9 187 237657 1664.41 611 614 142.4
C 15 214 224395 1571.29 611 614 142.4
D 7 80 268019 1771.18 623 607 151.0
D 10 118 197383 1303.33 623 607 151.0
D 8 195 141606 933.9 623 607 151.0

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