ASTROSAT CZTI

Data Quality Report

Orbit 34453

Creation date: 2022-02-11T01:03:10.941744
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/AS1A10_058T06_9000004920_34453cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34453cztM0_level2_quad_clean.evt
Size (bytes)1,206,264,960206,029,440
Size1.1 GB 196.5 MB
Events in quadrant A6,370,7301,391,748
Events in quadrant B8,496,8341,381,830
Events in quadrant C9,412,2211,332,334
Events in quadrant D11,406,5991,265,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263734
B0332113
C0369503
D0424333

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12565240.191007%
B125655174.114604%
C125651711.360923%
D125657195.722244%

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 18874 12568 5 5 0.03% 0.04%
B 18874 12568 356 356 1.89% 2.83%
C 18874 12568 131 131 0.69% 1.04%
D 18874 12568 720 720 3.81% 5.73%

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 64109 197.3 1613 1590 316.9
A 15 169 29410 87.8 1613 1590 316.9
A 9 143 21570 63.06 1613 1590 316.9
B 5 172 999958 3380.63 1586 1553 295.3
B 0 229 676246 2284.53 1586 1553 295.3
B 0 190 242243 814.98 1586 1553 295.3
C 4 254 2622319 7524.4 1538 1556 348.3
C 15 214 520652 1490.36 1538 1556 348.3
C 3 233 92719 261.74 1538 1556 348.3
D 8 195 2262402 5565.35 1499 1476 406.3
D 12 235 1059458 2604.26 1499 1476 406.3
D 2 249 636957 1564.26 1499 1476 406.3

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