ASTROSAT CZTI

Data Quality Report

Orbit 30761

Creation date: 2024-06-27T20:19:19.051691
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/AS1A10_053T37_9000004444_30761cztM0_level2.evt modeM0/AS1A10_053T37_9000004444_30761cztM0_level2_quad_clean.evt
Size (bytes)497,206,08082,143,360
Size474.2 MB 78.3 MB
Events in quadrant A2,970,405527,407
Events in quadrant B4,669,425530,800
Events in quadrant C3,152,028510,935
Events in quadrant D3,865,014504,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123491
B0180303
C0128171
D0153971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5923280.472733%
B5923971.637684%
C5923901.519500%
D5923450.759750%

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 7153 5924 0 0 0.00% 0.00%
B 7153 5923 2 2 0.03% 0.03%
C 7153 5923 6 6 0.08% 0.10%
D 7153 5924 23 23 0.32% 0.39%

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 13 254 10550 63.5 769 756 154.2
A 3 137 7148 41.44 769 756 154.2
A 0 226 6570 37.69 769 756 154.2
B 6 159 1656294 11480.73 754 736 144.2
B 12 111 17401 115.57 754 736 144.2
B 11 111 15704 103.8 754 736 144.2
C 14 238 118130 688.97 730 738 170.4
C 3 233 100121 583.27 730 738 170.4
C 0 10 33951 194.93 730 738 170.4
D 8 195 725151 4111.42 746 729 176.2
D 12 227 113049 637.47 746 729 176.2
D 13 174 47203 263.76 746 729 176.2

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