ASTROSAT CZTI

Data Quality Report

Orbit 48188

Creation date: 2024-08-26T03:17:35.870821
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/AS1A13_037T05_9000006414_48188cztM0_level2.fits modeM0/AS1A13_037T05_9000006414_48188cztM0_level2_quad_clean.evt
Size (bytes)519,232,32080,867,520
Size495.2 MB 77.1 MB
Events in quadrant A7,560,751712,954
Events in quadrant B1,222,860138
Events in quadrant C2,948,343729,968
Events in quadrant D6,951,428530,228

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272592
B074672
C0139892
D0256172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68203765.513196%
B6820681799.956012%
C682070.102639%
D6819146121.425429%

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 7665 6821 107 107 1.40% 1.57%
B 7664 6819 1 1 0.01% 0.01%
C 7665 6821 1 1 0.01% 0.01%
D 7664 6820 1315 1315 17.16% 19.28%

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 4622308 29239.75 747 730 158.1
A 13 248 34159 211.5 747 730 158.1
A 13 254 13678 81.92 747 730 158.1
B 2 177 939103 79305.13 48 47 11.8
B 4 21 52129 4398.43 48 47 11.8
B 0 200 24354 2052.77 48 47 11.8
C 12 2 19041 104.66 742 747 174.8
C 3 233 11615 62.18 742 747 174.8
C 14 254 11252 60.1 742 747 174.8
D 8 129 3300629 20085.46 648 627 164.3
D 2 165 413615 2513.65 648 627 164.3
D 5 222 218215 1324.35 648 627 164.3

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