ASTROSAT CZTI

Data Quality Report

Orbit 36366

Creation date: 2022-06-21T10:54:37.648053
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/AS1A11_097T24_9000005196_36366cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36366cztM0_level2_quad_clean.evt
Size (bytes)485,619,84075,597,120
Size463.1 MB 72.1 MB
Events in quadrant A2,747,705497,656
Events in quadrant B4,759,554480,742
Events in quadrant C2,986,404473,610
Events in quadrant D3,835,866447,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117963
B0179192
C0123322
D0152712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5559100.179888%
B555961411.045152%
C55591021.834862%
D55592584.641123%

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 7112 5560 3 3 0.04% 0.05%
B 7112 5559 460 460 6.47% 8.27%
C 7112 5560 93 93 1.31% 1.67%
D 7112 5560 257 257 3.61% 4.62%

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 10 83 185750 1450.99 629 616 127.6
A 12 189 74253 577.13 629 616 127.6
A 9 143 38180 294.41 629 616 127.6
B 5 172 1715939 15022.42 595 581 114.2
B 4 171 448585 3923.44 595 581 114.2
B 0 189 78022 678.2 595 581 114.2
C 15 214 236902 1661.73 604 609 142.2
C 0 207 210774 1477.99 604 609 142.2
C 0 10 182339 1278.02 604 609 142.2
D 12 6 949746 6512.08 596 580 145.8
D 2 249 218792 1497.12 596 580 145.8
D 13 249 112937 770.86 596 580 145.8

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