ASTROSAT CZTI

Data Quality Report

Orbit 35150

Creation date: 2022-03-30T03:51:02.906310
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_069T01_9000005034_35150cztM0_level2.evt modeM0/AS1A11_069T01_9000005034_35150cztM0_level2_quad_clean.evt
Size (bytes)631,912,32066,044,160
Size602.6 MB 63.0 MB
Events in quadrant A4,577,284403,878
Events in quadrant B5,915,597384,785
Events in quadrant C3,086,366421,483
Events in quadrant D5,179,768396,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176263
B0213732
C0124752
D0193822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56044828.600999%
B5604110019.628837%
C56041031.837973%
D56042354.193433%

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 7097 5605 318 318 4.48% 5.67%
B 7096 5604 695 695 9.79% 12.40%
C 7097 5605 76 76 1.07% 1.36%
D 7097 5605 268 268 3.78% 4.78%

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 15 169 2003567 15497.38 633 621 129.2
A 10 83 82592 634.23 633 621 129.2
A 9 143 27839 210.59 633 621 129.2
B 5 236 3202199 27818.17 599 584 115.1
B 5 172 254439 2205.69 599 584 115.1
B 4 232 64530 555.61 599 584 115.1
C 0 10 322674 2169.91 635 641 148.4
C 15 214 233479 1568.9 635 641 148.4
C 8 111 18980 123.57 635 641 148.4
D 8 195 1565596 10063.08 631 614 155.5
D 5 223 395373 2538.36 631 614 155.5
D 13 249 256211 1643.53 631 614 155.5

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