ASTROSAT CZTI

Data Quality Report

Orbit 34426

Creation date: 2022-02-09T05:20:21.805482
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/AS1A05_082T10_9000004916_34426cztM0_level2.evt modeM0/AS1A05_082T10_9000004916_34426cztM0_level2_quad_clean.evt
Size (bytes)473,852,16080,426,880
Size451.9 MB 76.7 MB
Events in quadrant A2,597,629521,413
Events in quadrant B2,933,124530,401
Events in quadrant C2,985,054519,887
Events in quadrant D5,457,722474,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114093
B0124842
C0123672
D0201532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5557110.197949%
B5557330.593846%
C5557320.575850%
D55574638.331834%

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 7080 5558 1 1 0.01% 0.02%
B 7080 5558 11 11 0.16% 0.20%
C 7080 5558 19 19 0.27% 0.34%
D 7080 5558 390 390 5.51% 7.02%

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 35178 259.02 655 643 133.3
A 13 6 14254 102.09 655 643 133.3
A 9 143 10593 74.63 655 643 133.3
B 0 190 134036 1065.99 652 635 125.1
B 5 172 130942 1041.26 652 635 125.1
B 0 229 45101 355.32 652 635 125.1
C 15 214 235192 1594.06 635 641 147.1
C 14 67 140193 948.42 635 641 147.1
C 0 10 110515 746.73 635 641 147.1
D 7 80 1207781 7954.21 613 598 151.8
D 8 195 864289 5690.92 613 598 151.8
D 2 250 295123 1940.65 613 598 151.8

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