ASTROSAT CZTI

Data Quality Report

Orbit 00838

Creation date: 2024-06-27T14:03:37.745544
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/AS1P01_165T02_9000000116_00838cztM0_level2.evt modeM0/AS1P01_165T02_9000000116_00838cztM0_level2_quad_clean.evt
Size (bytes)899,038,08057,902,400
Size857.4 MB 55.2 MB
Events in quadrant A6,822,371347,281
Events in quadrant B7,013,041344,816
Events in quadrant C6,518,229341,784
Events in quadrant D6,513,379338,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241170
B0246880
C0232110
D0232200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5434440.809717%
B5434400.736106%
C5435310.570377%
D5435440.809568%

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 6704 5434 334 334 4.98% 6.15%
B 6704 5434 324 324 4.83% 5.96%
C 6705 5435 175 175 2.61% 3.22%
D 6705 5435 264 264 3.94% 4.86%

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 15 127 290512 709.6 1694 1709 407.0
A 15 171 23313 53.08 1694 1709 407.0
A 7 16 8173 15.88 1694 1709 407.0
B 5 191 111685 266.25 1776 1785 412.8
B 8 38 99869 237.62 1776 1785 412.8
B 0 220 15640 33.57 1776 1785 412.8
C 8 208 51131 109.48 1634 1693 451.6
C 3 111 26840 55.69 1634 1693 451.6
C 3 79 21625 44.14 1634 1693 451.6
D 13 200 383754 786.86 1578 1635 485.6
D 10 157 50146 99.89 1578 1635 485.6
D 1 4 34163 66.98 1578 1635 485.6

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