ASTROSAT CZTI

Data Quality Report

Orbit 19013

Creation date: 2024-06-27T17:58:04.360159
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/AS1A06_003T05_9000002830_19013cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19013cztM0_level2_quad_clean.evt
Size (bytes)1,633,449,600232,125,120
Size1.5 GB 221.4 MB
Events in quadrant A14,622,5581,422,950
Events in quadrant B9,689,9541,504,469
Events in quadrant C9,327,8491,438,531
Events in quadrant D14,574,8471,382,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0558444
B0408464
C0393794
D0559064

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18605234512.604139%
B186053121.676969%
C186063321.784371%
D1860611706.288294%

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 20240 18607 1418 1418 7.01% 7.62%
B 20240 18609 55 55 0.27% 0.30%
C 20241 18610 18 18 0.09% 0.10%
D 20241 18610 724 724 3.58% 3.89%

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 14 235 6424043 15069.11 2112 2063 426.2
A 9 143 48329 108.56 2112 2063 426.2
A 0 226 18307 38.12 2112 2063 426.2
B 7 220 489545 1154.98 2215 2156 422.0
B 0 189 191363 448.37 2215 2156 422.0
B 3 112 168128 393.31 2215 2156 422.0
C 3 233 474066 943.61 2132 2143 500.1
C 14 238 330544 656.64 2132 2143 500.1
C 5 112 175245 346.12 2132 2143 500.1
D 7 238 4938849 9481.7 2140 2075 520.7
D 1 52 1338435 2566.65 2140 2075 520.7
D 2 234 77597 145.05 2140 2075 520.7

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