ASTROSAT CZTI

Data Quality Report

Orbit 31601

Creation date: 2024-06-27T20:30:33.317976
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/AS1C06_002T03_9000004610_31601cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31601cztM0_level2_quad_clean.evt
Size (bytes)727,666,560123,531,840
Size694.0 MB 117.8 MB
Events in quadrant A5,218,110804,549
Events in quadrant B5,259,601867,753
Events in quadrant C3,326,245850,182
Events in quadrant D7,798,646768,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198801
B0203871
C0140671
D0278701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A644485113.206083%
B64451983.072149%
C64451372.125679%
D644581012.567882%

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 7503 6443 680 680 9.06% 10.55%
B 7504 6444 44 44 0.59% 0.68%
C 7504 6444 5 5 0.07% 0.08%
D 7504 6444 598 598 7.97% 9.28%

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 0 13 2436993 16843.77 720 707 144.6
A 13 254 11499 74.61 720 707 144.6
A 3 137 6904 42.84 720 707 144.6
B 6 159 1895265 13258.17 764 746 142.9
B 5 172 148611 1034.78 764 746 142.9
B 4 80 126006 876.59 764 746 142.9
C 3 233 251389 1442.75 741 743 173.7
C 14 238 128054 732.82 741 743 173.7
C 4 175 30412 170.78 741 743 173.7
D 8 195 3956976 23460.25 710 692 168.6
D 12 2 448447 2655.13 710 692 168.6
D 12 218 349258 2066.95 710 692 168.6

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