ASTROSAT CZTI

Data Quality Report

Orbit 18959

Creation date: 2024-06-27T17:57:05.078851
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_205T01_9000002824_18959cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18959cztM0_level2_quad_clean.evt
Size (bytes)519,310,080106,211,520
Size495.3 MB 101.3 MB
Events in quadrant A3,238,210698,735
Events in quadrant B4,457,200700,642
Events in quadrant C3,305,650699,953
Events in quadrant D4,278,570657,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138012
B0175543
C0138882
D0170102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6605210.317941%
B66043425.178680%
C6604480.726832%
D66042023.058752%

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 7830 6606 3 3 0.04% 0.05%
B 7829 6605 200 200 2.55% 3.03%
C 7829 6605 0 0 0.00% 0.00%
D 7829 6605 153 153 1.95% 2.32%

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 66057 393.79 824 807 165.7
A 0 226 6967 37.18 824 807 165.7
A 13 254 6470 34.18 824 807 165.7
B 3 112 1141235 7437.45 815 794 153.3
B 0 189 87118 562.97 815 794 153.3
B 7 220 26559 168.03 815 794 153.3
C 14 238 128156 670.13 814 820 190.0
C 13 61 5584 25.07 814 820 190.0
C 6 96 3589 14.57 814 820 190.0
D 7 238 886242 4583.39 798 776 193.2
D 1 52 252529 1303.14 798 776 193.2
D 12 218 57833 295.34 798 776 193.2

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