ASTROSAT CZTI

Data Quality Report

Orbit 37970

Creation date: 2024-06-27T21:46:48.858146
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_082T01_9000005356_37970cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37970cztM0_level2_quad_clean.evt
Size (bytes)406,284,48085,161,600
Size387.5 MB 81.2 MB
Events in quadrant A3,912,135547,470
Events in quadrant B2,789,671564,851
Events in quadrant C2,752,114576,984
Events in quadrant D2,516,961545,111

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153693
B0110872
C0110062
D0103962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4905350.713558%
B4905881.794088%
C4905390.795107%
D4905210.428135%

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 7026 4906 16 16 0.23% 0.33%
B 7026 4906 69 69 0.98% 1.41%
C 7026 4906 19 19 0.27% 0.39%
D 7026 4906 14 14 0.20% 0.29%

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 15 222 1152420 9517.2 612 602 121.0
A 10 83 351000 2895.26 612 602 121.0
A 13 6 16718 133.16 612 602 121.0
B 5 200 170826 1480.49 605 590 115.0
B 0 229 116689 1009.68 605 590 115.0
B 5 172 40891 350.49 605 590 115.0
C 15 214 212072 1548.78 602 608 136.5
C 0 10 107452 782.53 602 608 136.5
C 14 254 69659 505.74 602 608 136.5
D 12 227 45133 307.5 602 587 144.9
D 13 249 44091 300.31 602 587 144.9
D 1 52 34519 234.23 602 587 144.9

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