ASTROSAT CZTI

Data Quality Report

Orbit 10883

Creation date: 2024-06-27T16:05:09.523980
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_055T01_9000001574_10883cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10883cztM0_level2_quad_clean.evt
Size (bytes)593,645,760116,504,640
Size566.1 MB 111.1 MB
Events in quadrant A4,884,382780,022
Events in quadrant B4,331,695788,558
Events in quadrant C3,372,299792,697
Events in quadrant D4,951,430715,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188602
B0171701
C0144081
D0188931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64853755.782575%
B64852904.471858%
C64851241.912105%
D64854887.525058%

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 7725 6486 274 274 3.55% 4.22%
B 7725 6486 136 136 1.76% 2.10%
C 7725 6486 54 54 0.70% 0.83%
D 7725 6485 217 217 2.81% 3.35%

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 8 5 1759258 10706.28 809 792 164.2
A 0 226 7645 41.72 809 792 164.2
A 12 194 6571 35.18 809 792 164.2
B 4 239 1100502 7365.68 803 786 149.3
B 0 219 23647 153.12 803 786 149.3
B 0 214 22936 148.36 803 786 149.3
C 4 254 298554 1666.56 784 788 178.7
C 14 234 14038 74.16 784 788 178.7
C 13 61 5792 28.0 784 788 178.7
D 1 52 1299263 7176.67 757 737 180.9
D 8 195 338972 1869.35 757 737 180.9
D 13 152 155606 855.93 757 737 180.9

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