ASTROSAT CZTI

Data Quality Report

Orbit 20210212_A10_094T17_9000004176_level2

Creation date: 2021-02-13T10:39:50.401719
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_094T17_9000004176cztM0_level2_bc.evt modeM0/AS1A10_094T17_9000004176cztM0_level2_quad_clean.evt
Size (bytes)233,735,04081,357,120
Size222.9 MB 77.6 MB
Events in quadrant A924,879587,851
Events in quadrant B1,046,752592,132
Events in quadrant C864,108544,568
Events in quadrant D3,977,369471,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082720
B087250
C081680
D0187190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3790661.741425%
B3790932.453826%
C3790782.058047%
D3790100726.569921%

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 4980 3789 0 0 0.00% 0.00%
B 4980 3789 1 1 0.02% 0.03%
C 4979 3788 0 0 0.00% 0.00%
D 4979 3788 453 453 9.10% 11.96%

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 13 254 7024 127.31 237 233 53.3
A 6 16 5210 93.3 237 233 53.3
A 13 6 3880 68.37 237 233 53.3
B 5 172 49067 1050.67 236 232 46.5
B 5 255 31419 670.98 236 232 46.5
B 3 209 12646 267.08 236 232 46.5
C 2 16 16878 310.54 217 216 53.7
C 2 114 7798 141.31 217 216 53.7
C 7 247 1984 32.95 217 216 53.7
D 1 52 2248623 46554.57 202 195 48.3
D 8 195 583242 12072.21 202 195 48.3
D 7 69 191801 3967.28 202 195 48.3

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