ASTROSAT CZTI

Data Quality Report

Orbit 20162

Creation date: 2024-06-27T18:11:54.632588
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/AS1A05_180T01_9000002992_20162cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20162cztM0_level2_quad_clean.evt
Size (bytes)473,042,88087,125,760
Size451.1 MB 83.1 MB
Events in quadrant A3,227,982574,612
Events in quadrant B3,263,312576,456
Events in quadrant C3,323,812540,203
Events in quadrant D4,102,222526,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130242
B0131771
C0134681
D0158431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6016580.964096%
B6017701.163370%
C6017821.362805%
D60173325.517700%

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 7321 6017 0 0 0.00% 0.00%
B 7322 6018 1 1 0.01% 0.02%
C 7322 6018 0 0 0.00% 0.00%
D 7322 6018 248 248 3.39% 4.12%

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 0 226 7319 39.03 839 827 166.3
A 3 137 6275 32.75 839 827 166.3
A 12 194 5844 30.16 839 827 166.3
B 0 230 26717 168.88 822 806 153.4
B 12 111 17890 111.35 822 806 153.4
B 0 183 16380 101.51 822 806 153.4
C 3 233 165094 924.19 777 786 177.8
C 14 238 127402 712.18 777 786 177.8
C 13 61 5307 25.43 777 786 177.8
D 11 176 400361 2130.23 779 760 187.6
D 1 52 366576 1950.13 779 760 187.6
D 10 172 273773 1455.4 779 760 187.6

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