ASTROSAT CZTI

Data Quality Report

Orbit 19840

Creation date: 2024-06-27T18:07:45.700642
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/AS1T03_118T01_9000002962_19840cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19840cztM0_level2_quad_clean.evt
Size (bytes)468,221,76071,262,720
Size446.5 MB 68.0 MB
Events in quadrant A3,578,786435,648
Events in quadrant B3,354,037437,350
Events in quadrant C3,296,082414,979
Events in quadrant D3,503,768410,425

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147823
B0141332
C0139062
D0147842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65931752.654330%
B6593771.167905%
C6593791.198241%
D6593871.319581%

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 7658 6593 43 43 0.56% 0.65%
B 7658 6593 2 2 0.03% 0.03%
C 7658 6593 0 0 0.00% 0.00%
D 7658 6593 38 38 0.50% 0.58%

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 14 238 331332 1961.96 838 821 168.5
A 10 253 11978 66.23 838 821 168.5
A 0 23 11517 63.49 838 821 168.5
B 7 220 29924 180.89 838 818 160.9
B 0 190 23910 143.51 838 818 160.9
B 12 111 19021 113.13 838 818 160.9
C 14 238 125773 661.22 805 811 189.0
C 9 221 17965 90.77 805 811 189.0
C 7 220 7592 35.88 805 811 189.0
D 1 52 249678 1257.72 817 795 197.9
D 12 17 106512 534.24 817 795 197.9
D 2 234 31041 152.85 817 795 197.9

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