ASTROSAT CZTI

Data Quality Report

Orbit 40898

Creation date: 2024-06-27T22:21:55.271098
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/AS1A12_097T01_9000005574_40898cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40898cztM0_level2_quad_clean.evt
Size (bytes)318,202,56085,250,880
Size303.5 MB 81.3 MB
Events in quadrant A2,801,393566,449
Events in quadrant B2,666,624589,490
Events in quadrant C2,601,868559,630
Events in quadrant D3,303,429501,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113353
B0114992
C0109602
D0133922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520380.153757%
B5203440.845666%
C5203310.595810%
D52031492.863732%

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 7086 5204 2 2 0.03% 0.04%
B 7086 5204 25 25 0.35% 0.48%
C 7086 5204 24 24 0.34% 0.46%
D 7086 5204 141 141 1.99% 2.71%

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 10 83 504015 4215.22 577 564 119.4
A 12 189 40107 331.08 577 564 119.4
A 13 6 15650 126.31 577 564 119.4
B 5 255 158197 1376.52 579 564 114.5
B 4 171 101702 883.18 579 564 114.5
B 5 32 47168 406.97 579 564 114.5
C 15 214 221652 1658.93 564 567 133.3
C 0 10 109140 814.69 564 567 133.3
C 14 254 60615 450.57 564 567 133.3
D 12 233 355104 2565.35 556 540 138.2
D 12 128 261596 1888.8 556 540 138.2
D 12 79 135968 979.85 556 540 138.2

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