ASTROSAT CZTI

Data Quality Report

Orbit 35178

Creation date: 2022-04-01T00:34:52.395464
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/AS1C07_001T06_9000005046_35178cztM0_level2.evt modeM0/AS1C07_001T06_9000005046_35178cztM0_level2_quad_clean.evt
Size (bytes)692,026,56090,789,120
Size660.0 MB 86.6 MB
Events in quadrant A2,369,756655,741
Events in quadrant B8,420,277504,464
Events in quadrant C2,623,319664,223
Events in quadrant D7,203,220568,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104512
B0285101
C0107701
D0249411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5065190.375123%
B5065239047.186575%
C5065541.066140%
D5065115022.704837%

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 6889 5066 13 13 0.19% 0.26%
B 6889 5065 1757 1757 25.50% 34.69%
C 6889 5066 42 42 0.61% 0.83%
D 6889 5066 1043 1043 15.14% 20.59%

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 77141 664.44 571 561 115.3
A 15 169 31104 265.0 571 561 115.3
A 9 143 20507 173.06 571 561 115.3
B 5 236 5801113 66821.58 458 447 86.8
B 5 172 678434 7810.17 458 447 86.8
B 3 112 70184 803.35 458 447 86.8
C 15 214 210089 1602.33 566 569 130.8
C 0 10 169473 1291.72 566 569 130.8
C 0 207 24484 182.89 566 569 130.8
D 8 195 3085334 23878.64 528 514 129.2
D 10 203 763026 5902.37 528 514 129.2
D 1 47 627551 4853.7 528 514 129.2

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