ASTROSAT CZTI

Data Quality Report

Orbit 41747

Creation date: 2024-06-27T22:32:21.401582
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_077T11_9000005696_41747cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41747cztM0_level2_quad_clean.evt
Size (bytes)448,188,48093,337,920
Size427.4 MB 89.0 MB
Events in quadrant A3,112,786653,395
Events in quadrant B2,680,254673,130
Events in quadrant C3,626,388599,496
Events in quadrant D6,729,889503,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125162
B0115902
C0140222
D0239302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5677130.228994%
B5678230.405072%
C56772534.456579%
D567790115.871059%

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 9114 5679 4 4 0.04% 0.07%
B 9115 5678 12 12 0.13% 0.21%
C 9113 5676 241 241 2.64% 4.25%
D 9114 5677 922 922 10.12% 16.24%

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 546624 4048.63 654 643 134.9
A 2 79 18175 130.01 654 643 134.9
A 13 254 8862 60.95 654 643 134.9
B 0 245 51315 400.25 648 631 126.6
B 5 255 27952 215.75 648 631 126.6
B 0 183 21092 161.58 648 631 126.6
C 0 10 951206 6645.36 613 616 143.0
C 15 214 246053 1715.79 613 616 143.0
C 14 254 32760 224.71 613 616 143.0
D 12 79 3062316 20676.3 599 582 148.1
D 2 249 1093434 7380.18 599 582 148.1
D 2 120 103176 692.83 599 582 148.1

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