ASTROSAT CZTI

Data Quality Report

Orbit 46676

Creation date: 2024-06-27T23:26:21.375130
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/AS1A13_092T18_9000006248_46676cztM0_level2.fits modeM0/AS1A13_092T18_9000006248_46676cztM0_level2_quad_clean.evt
Size (bytes)72,336,96013,861,440
Size69.0 MB 13.2 MB
Events in quadrant A1,133,55884,023
Events in quadrant B473,37998,485
Events in quadrant C396,21293,667
Events in quadrant D611,63482,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039111
B018961
C016461
D023501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76911514.954486%
B769111.430429%
C76930.390117%
D769354.551365%

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 769 769 87 87 11.31% 11.31%
B 769 769 2 2 0.26% 0.26%
C 769 769 1 1 0.13% 0.13%
D 769 769 28 28 3.64% 3.64%

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 690202 33031.4 90 88 20.9
A 15 235 41829 1997.88 90 88 20.9
A 0 243 36461 1740.95 90 88 20.9
B 0 189 32262 1608.4 94 92 20.0
B 4 171 21336 1062.13 94 92 20.0
B 15 201 21244 1057.53 94 92 20.0
C 9 237 10908 452.02 94 94 23.9
C 12 2 10178 421.51 94 94 23.9
C 14 254 2333 93.59 94 94 23.9
D 5 171 58256 2330.19 91 88 25.0
D 1 52 49659 1985.8 91 88 25.0
D 8 176 35165 1405.17 91 88 25.0

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