ASTROSAT CZTI

Data Quality Report

Orbit 31900

Creation date: 2024-06-27T20:34:18.886844
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/AS1T04_044T01_9000004652_31900cztM0_level2.evt modeM0/AS1T04_044T01_9000004652_31900cztM0_level2_quad_clean.evt
Size (bytes)709,341,12068,437,440
Size676.5 MB 65.3 MB
Events in quadrant A3,376,625425,718
Events in quadrant B7,072,728395,267
Events in quadrant C6,220,255394,096
Events in quadrant D4,370,229398,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139303
B0255412
C0232292
D0173232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6560430.655488%
B656189013.565005%
C65616249.510745%
D6561741.127877%

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 7666 6562 0 0 0.00% 0.00%
B 7666 6562 562 562 7.33% 8.56%
C 7666 6562 251 251 3.27% 3.83%
D 7666 6562 34 34 0.44% 0.52%

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 12 96 10601 56.21 871 855 173.4
A 13 254 9876 52.03 871 855 173.4
A 3 137 8885 46.31 871 855 173.4
B 10 245 2096412 13134.61 835 815 159.5
B 6 159 1667215 10444.52 835 815 159.5
B 0 213 24427 147.99 835 815 159.5
C 3 233 2287624 12332.75 799 805 185.4
C 0 10 644097 3469.26 799 805 185.4
C 14 238 134366 720.29 799 805 185.4
D 8 195 883331 4506.98 829 808 195.8
D 2 250 134883 684.71 829 808 195.8
D 1 52 102646 520.08 829 808 195.8

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