ASTROSAT CZTI

Data Quality Report

Orbit 12938

Creation date: 2024-06-27T16:34:08.567538
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_115T02_9000001900_12938cztM0_level2.evt modeM0/AS1A04_115T02_9000001900_12938cztM0_level2_quad_clean.evt
Size (bytes)481,020,48088,283,520
Size458.7 MB 84.2 MB
Events in quadrant A3,555,290569,204
Events in quadrant B4,130,997553,706
Events in quadrant C3,044,190568,949
Events in quadrant D3,416,275548,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143872
B0159541
C0127601
D0139201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62001242.000000%
B62004507.258065%
C6200440.709677%
D62001141.838710%

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 7436 6202 36 36 0.48% 0.58%
B 7435 6201 260 260 3.50% 4.19%
C 7436 6202 0 0 0.00% 0.00%
D 7436 6202 61 61 0.82% 0.98%

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 15 223 144633 886.88 809 793 162.2
A 1 162 89113 544.56 809 793 162.2
A 15 239 85252 520.75 809 793 162.2
B 4 239 893966 6103.72 771 754 146.3
B 3 64 188644 1283.94 771 754 146.3
B 12 111 16097 104.85 771 754 146.3
C 13 61 5499 26.34 779 784 179.0
C 12 4 3064 12.74 779 784 179.0
C 8 222 2260 8.24 779 784 179.0
D 1 52 334005 1786.07 781 762 186.6
D 2 14 81572 433.12 781 762 186.6
D 8 195 42646 224.48 781 762 186.6

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