ASTROSAT CZTI

Data Quality Report

Orbit 12654

Creation date: 2024-06-27T16:30:35.974794
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/AS1A04_174T01_9000001876_12654cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12654cztM0_level2_quad_clean.evt
Size (bytes)576,394,56086,676,480
Size549.7 MB 82.7 MB
Events in quadrant A3,124,286558,250
Events in quadrant B4,345,910533,310
Events in quadrant C3,176,978556,425
Events in quadrant D6,356,086510,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137822
B0172581
C0139841
D0234821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6687490.732765%
B66874176.235980%
C6687270.403769%
D668776111.380290%

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 7128 6688 3 3 0.04% 0.04%
B 7128 6688 303 303 4.25% 4.53%
C 7128 6688 3 3 0.04% 0.04%
D 7128 6689 788 788 11.05% 11.78%

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 18417 108.16 798 782 163.0
A 9 143 16446 96.07 798 782 163.0
A 13 248 16312 95.25 798 782 163.0
B 4 239 995677 6574.88 780 763 151.3
B 3 64 207417 1365.67 780 763 151.3
B 3 209 38669 250.5 780 763 151.3
C 15 208 124210 675.79 781 789 182.6
C 12 2 6546 31.52 781 789 182.6
C 13 61 5736 27.08 781 789 182.6
D 1 52 2793604 15629.29 737 716 178.7
D 10 157 675513 3776.23 737 716 178.7
D 13 249 54597 301.52 737 716 178.7

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