ASTROSAT CZTI

Data Quality Report

Orbit 41349

Creation date: 2024-06-27T22:27:59.803331
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/AS1T05_105T01_9000005658_41349cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41349cztM0_level2_quad_clean.evt
Size (bytes)378,964,80093,798,720
Size361.4 MB 89.5 MB
Events in quadrant A3,186,679639,050
Events in quadrant B3,234,112644,336
Events in quadrant C3,284,834591,664
Events in quadrant D3,870,435559,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128453
B0134412
C0132632
D0153612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5805340.585702%
B58051252.153316%
C58052253.875969%
D58051592.739018%

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 7148 5806 26 26 0.36% 0.45%
B 7148 5805 104 104 1.45% 1.79%
C 7148 5806 227 227 3.18% 3.91%
D 7148 5806 180 180 2.52% 3.10%

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 541876 4090.26 640 627 132.3
A 13 248 132258 994.74 640 627 132.3
A 12 189 24358 179.34 640 627 132.3
B 5 255 597367 4827.9 631 612 123.6
B 0 190 107922 868.17 631 612 123.6
B 0 155 25337 200.03 631 612 123.6
C 0 10 652456 4529.01 607 610 143.9
C 15 214 247326 1714.18 607 610 143.9
C 8 128 5024 30.66 607 610 143.9
D 1 47 487853 3246.64 613 595 150.1
D 13 249 377853 2513.7 613 595 150.1
D 1 52 321979 2141.41 613 595 150.1

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