ASTROSAT CZTI

Data Quality Report

Orbit 14817

Creation date: 2024-06-27T17:00:04.670504
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/AS1G08_010T02_9000002188_14817cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14817cztM0_level2_quad_clean.evt
Size (bytes)570,234,24072,797,760
Size543.8 MB 69.4 MB
Events in quadrant A3,416,975444,694
Events in quadrant B4,463,629434,197
Events in quadrant C4,917,152430,258
Events in quadrant D4,019,401429,624

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141673
B0173112
C0186342
D0164862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6680640.958084%
B66804166.227545%
C66805708.532934%
D66802183.263473%

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 7751 6682 7 7 0.09% 0.10%
B 7751 6682 284 284 3.66% 4.25%
C 7751 6682 315 315 4.06% 4.71%
D 7751 6682 157 157 2.03% 2.35%

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 12 189 125260 730.98 843 827 170.2
A 9 143 48072 277.54 843 827 170.2
A 0 226 7394 38.58 843 827 170.2
B 3 64 972444 6201.15 824 806 156.7
B 0 189 68174 429.95 824 806 156.7
B 0 229 55623 349.85 824 806 156.7
C 4 254 1556612 8654.4 778 782 179.8
C 3 233 314413 1744.59 778 782 179.8
C 4 238 7692 38.44 778 782 179.8
D 7 254 557020 2830.16 801 781 196.5
D 13 104 379284 1925.84 801 781 196.5
D 2 234 22383 109.91 801 781 196.5

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