ASTROSAT CZTI

Data Quality Report

Orbit 41186

Creation date: 2024-06-27T22:25:24.303327
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/AS1A12_101T01_9000005612_41186cztM0_level2.fits modeM0/AS1A12_101T01_9000005612_41186cztM0_level2_quad_clean.evt
Size (bytes)246,173,76045,915,840
Size234.8 MB 43.8 MB
Events in quadrant A1,612,171352,775
Events in quadrant B3,791,682218,130
Events in quadrant C2,019,479315,489
Events in quadrant D1,465,251300,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064581
B0130941
C077641
D063481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285160.210452%
B2851116540.862855%
C28511635.717292%
D2851883.086636%

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 2851 2851 0 0 0.00% 0.00%
B 2851 2851 1145 1145 40.16% 40.16%
C 2851 2851 153 153 5.37% 5.37%
D 2851 2851 63 63 2.21% 2.21%

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 261755 3844.28 331 326 68.0
A 12 189 61584 900.79 331 326 68.0
A 13 254 5061 69.63 331 326 68.0
B 7 202 2706445 52006.1 263 257 52.0
B 5 255 34490 657.87 263 257 52.0
B 0 190 8771 163.62 263 257 52.0
C 9 54 354513 4944.4 306 308 71.6
C 0 10 265742 3705.23 306 308 71.6
C 15 214 121765 1695.44 306 308 71.6
D 13 249 160981 2101.02 314 306 76.5
D 2 249 73464 956.63 314 306 76.5
D 2 120 17826 229.1 314 306 76.5

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