ASTROSAT CZTI

Data Quality Report

Orbit 46515

Creation date: 2024-06-27T23:24:05.814944
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_068T07_9000006222_46515cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46515cztM0_level2_quad_clean.evt
Size (bytes)512,043,840109,474,560
Size488.3 MB 104.4 MB
Events in quadrant A6,474,328720,897
Events in quadrant B3,682,811752,705
Events in quadrant C3,905,174710,419
Events in quadrant D4,360,016652,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238242
B0155372
C0166002
D0177882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68562213.223454%
B68561311.910735%
C68562794.069428%
D68562433.544341%

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 7891 6856 86 86 1.09% 1.25%
B 7891 6857 67 67 0.85% 0.98%
C 7891 6857 228 228 2.89% 3.33%
D 7891 6857 226 226 2.86% 3.30%

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 3450582 22005.12 753 737 156.8
A 9 191 36608 228.8 753 737 156.8
A 0 243 33186 206.98 753 737 156.8
B 12 3 258388 1732.17 759 738 148.7
B 5 255 71175 473.55 759 738 148.7
B 5 32 60471 401.58 759 738 148.7
C 14 254 826696 4718.15 742 746 175.1
C 12 2 129504 735.52 742 746 175.1
C 3 233 34055 190.27 742 746 175.1
D 13 249 808210 4316.71 737 713 187.1
D 1 52 125911 669.28 737 713 187.1
D 2 37 102784 545.65 737 713 187.1

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