ASTROSAT CZTI

Data Quality Report

Orbit 04195

Creation date: 2024-06-27T14:38:37.524253
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/AS1G05_240T01_9000000536_04195cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04195cztM0_level2_quad_clean.evt
Size (bytes)648,423,36063,858,240
Size618.4 MB 60.9 MB
Events in quadrant A5,616,939377,222
Events in quadrant B3,593,468403,592
Events in quadrant C6,734,527353,419
Events in quadrant D3,285,595378,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206152
B0143111
C0240301
D0139091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6018106217.647059%
B60181151.910934%
C6018111218.477900%
D60181402.326354%

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 7203 6019 727 727 10.09% 12.08%
B 7203 6019 38 38 0.53% 0.63%
C 7203 6019 1090 1090 15.13% 18.11%
D 7203 6019 101 101 1.40% 1.68%

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 0 50 2253971 16273.54 680 665 138.5
A 0 199 422506 3046.57 680 665 138.5
A 12 247 202012 1454.14 680 665 138.5
B 3 0 315029 2241.04 730 714 140.3
B 10 16 301494 2144.53 730 714 140.3
B 8 3 70614 498.38 730 714 140.3
C 9 144 4171418 27508.57 653 656 151.6
C 10 65 6324 37.38 653 656 151.6
C 13 61 5324 30.79 653 656 151.6
D 13 239 410125 2433.91 701 683 168.2
D 13 61 62358 366.62 701 683 168.2
D 4 95 37070 216.3 701 683 168.2

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