ASTROSAT CZTI

Data Quality Report

Orbit 10666

Creation date: 2024-06-27T16:02:11.871134
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/AS1A03_097T01_9000001540_10666cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10666cztM0_level2_quad_clean.evt
Size (bytes)627,624,00090,210,240
Size598.5 MB 86.0 MB
Events in quadrant A3,003,156614,343
Events in quadrant B4,209,279605,477
Events in quadrant C3,371,452610,307
Events in quadrant D8,010,223474,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129863
B0165412
C0140312
D0279992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110490.801964%
B61103075.024550%
C6110841.374795%
D6110161926.497545%

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 7405 6111 0 0 0.00% 0.00%
B 7405 6111 184 184 2.48% 3.01%
C 7405 6111 50 50 0.68% 0.82%
D 7405 6111 1641 1641 22.16% 26.85%

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 1 162 22932 144.98 764 749 153.0
A 4 2 22132 139.75 764 749 153.0
A 0 226 7082 41.39 764 749 153.0
B 4 239 1148811 8191.58 756 740 140.2
B 15 204 39746 278.31 756 740 140.2
B 0 214 34478 240.72 756 740 140.2
C 4 254 384434 2242.41 747 752 171.1
C 4 175 49228 283.32 747 752 171.1
C 14 234 14583 80.83 747 752 171.1
D 1 20 3797125 23867.34 667 650 159.1
D 8 195 619132 3888.22 667 650 159.1
D 10 199 602843 3785.81 667 650 159.1

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