ASTROSAT CZTI

Data Quality Report

Orbit 34199

Creation date: 2022-01-24T22:00:23.964962
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_047T15_9000004882_34199cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34199cztM0_level2_quad_clean.evt
Size (bytes)1,560,312,000163,909,440
Size1.5 GB 156.3 MB
Events in quadrant A7,389,8741,013,821
Events in quadrant B14,461,782973,142
Events in quadrant C9,098,1841,003,027
Events in quadrant D15,262,629904,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318235
B0533054
C0358384
D0559524

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15490430.277598%
B15490204313.189154%
C154902951.904454%
D15490162010.458360%

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 19728 15493 13 13 0.07% 0.08%
B 19728 15493 1461 1461 7.41% 9.43%
C 19728 15493 222 222 1.13% 1.43%
D 19728 15493 1303 1303 6.60% 8.41%

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 9 143 205079 554.14 1833 1799 366.8
A 10 83 48228 126.57 1833 1799 366.8
A 13 6 48151 126.36 1833 1799 366.8
B 5 31 2708376 8038.98 1758 1709 336.7
B 5 172 1755878 5209.99 1758 1709 336.7
B 5 15 1600359 4748.09 1758 1709 336.7
C 15 214 703580 1723.19 1771 1780 407.3
C 0 239 678347 1661.24 1771 1780 407.3
C 0 10 471605 1153.61 1771 1780 407.3
D 8 195 3197906 7525.98 1708 1660 424.7
D 2 249 2426805 5710.32 1708 1660 424.7
D 2 250 995235 2339.5 1708 1660 424.7

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