ASTROSAT CZTI

Data Quality Report

Orbit 47615

Creation date: 2024-07-18T12:01:55.280165
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_071T01_9000006340_47615cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47615cztM0_level2_quad_clean.evt
Size (bytes)504,869,760109,108,800
Size481.5 MB 104.1 MB
Events in quadrant A7,788,957702,536
Events in quadrant B3,323,045755,817
Events in quadrant C3,281,059716,726
Events in quadrant D3,761,029648,457

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282892
B0144262
C0145012
D0160142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68905487.953556%
B6890771.117562%
C6890670.972424%
D68902273.294630%

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 7800 6892 223 223 2.86% 3.24%
B 7800 6892 6 6 0.08% 0.09%
C 7800 6892 3 3 0.04% 0.04%
D 7800 6892 132 132 1.69% 1.92%

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 3765254 23725.51 762 745 158.7
A 9 191 537497 3382.84 762 745 158.7
A 13 248 496008 3121.35 762 745 158.7
B 0 200 76354 496.27 772 746 152.4
B 5 255 39664 255.45 772 746 152.4
B 5 172 38632 248.67 772 746 152.4
C 3 233 152118 835.39 765 769 181.2
C 1 3 70559 385.22 765 769 181.2
C 14 254 40585 219.77 765 769 181.2
D 2 249 604506 3208.5 756 733 188.2
D 2 165 164076 868.02 756 733 188.2
D 13 171 38695 201.73 756 733 188.2

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