ASTROSAT CZTI

Data Quality Report

Orbit 26981

Creation date: 2024-06-27T19:35:13.367202
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/AS1A09_145T01_9000003900_26981cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26981cztM0_level2_quad_clean.evt
Size (bytes)651,294,720117,604,800
Size621.1 MB 112.2 MB
Events in quadrant A8,540,855646,082
Events in quadrant B3,383,676876,034
Events in quadrant C3,474,972824,350
Events in quadrant D3,910,540787,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295430
B0138570
C0141480
D0156330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123232337.938919%
B6124440.718485%
C61231111.812837%
D61231412.302793%

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 7488 6124 1922 1922 25.67% 31.38%
B 7489 6125 1 1 0.01% 0.02%
C 7488 6124 15 15 0.20% 0.24%
D 7488 6124 100 100 1.34% 1.63%

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 14 235 5042826 35749.66 702 693 141.0
A 6 16 777816 5509.94 702 693 141.0
A 8 192 11711 78.12 702 693 141.0
B 0 219 23207 139.62 858 841 160.2
B 12 111 18348 109.29 858 841 160.2
B 11 111 16251 96.2 858 841 160.2
C 14 238 136293 707.71 825 835 191.4
C 15 208 116199 602.73 825 835 191.4
C 13 61 5839 26.14 825 835 191.4
D 1 52 587563 2752.35 805 795 213.2
D 2 250 205930 962.23 805 795 213.2
D 2 234 27898 127.13 805 795 213.2

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