ASTROSAT CZTI

Data Quality Report

Orbit 13168

Creation date: 2024-06-27T16:37:07.855613
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/AS1A04_094T01_9000001942_13168cztM0_level2.evt modeM0/AS1A04_094T01_9000001942_13168cztM0_level2_quad_clean.evt
Size (bytes)465,209,28086,215,680
Size443.7 MB 82.2 MB
Events in quadrant A3,327,835539,594
Events in quadrant B3,990,802541,824
Events in quadrant C2,998,146556,088
Events in quadrant D3,337,722527,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140413
B0163602
C0133362
D0145342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6393941.470358%
B63932974.645706%
C6393440.688253%
D63931201.877053%

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 7494 6395 35 35 0.47% 0.55%
B 7494 6395 163 163 2.18% 2.55%
C 7494 6395 0 0 0.00% 0.00%
D 7494 6395 53 53 0.71% 0.83%

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 4 2 142078 894.2 775 757 158.0
A 12 189 93311 585.63 775 757 158.0
A 1 162 36534 226.38 775 757 158.0
B 4 239 805546 5482.95 769 749 146.8
B 0 189 53713 360.83 769 749 146.8
B 5 32 39941 267.01 769 749 146.8
C 13 61 5711 27.89 768 773 177.0
C 15 208 3813 17.17 768 773 177.0
C 8 222 1956 6.68 768 773 177.0
D 1 52 233751 1269.12 757 736 183.6
D 10 157 155934 845.29 757 736 183.6
D 14 34 40449 216.3 757 736 183.6

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