ASTROSAT CZTI

Data Quality Report

Orbit 36047

Creation date: 2022-08-10T01:00:16.676355
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_069T01_9000005158_36047cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36047cztM0_level2_quad_clean.evt
Size (bytes)528,160,32089,104,320
Size503.7 MB 85.0 MB
Events in quadrant A2,943,108588,367
Events in quadrant B3,392,740584,910
Events in quadrant C3,669,631576,150
Events in quadrant D5,578,567525,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124673
B0138602
C0145852
D0205972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6071110.181189%
B60711101.811893%
C60712323.821446%
D607161110.064240%

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 9838 6073 1 1 0.01% 0.02%
B 9838 6073 75 75 0.76% 1.23%
C 9838 6073 171 171 1.74% 2.82%
D 9838 6073 639 639 6.50% 10.52%

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 10 83 183661 1268.71 707 694 144.2
A 13 6 13740 90.46 707 694 144.2
A 13 254 9726 62.63 707 694 144.2
B 5 236 230260 1719.17 696 676 133.5
B 0 190 173292 1292.58 696 676 133.5
B 5 255 120967 900.76 696 676 133.5
C 9 187 589435 3766.79 670 674 156.3
C 15 214 246790 1574.61 670 674 156.3
C 0 10 207933 1326.01 670 674 156.3
D 12 235 2539166 15560.57 663 643 163.1
D 12 17 96505 587.61 663 643 163.1
D 12 128 60241 365.32 663 643 163.1

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