ASTROSAT CZTI

Data Quality Report

Orbit 15051

Creation date: 2024-06-27T17:03:03.875305
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/AS1T02_060T01_9000002216_15051cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15051cztM0_level2_quad_clean.evt
Size (bytes)442,535,04091,742,400
Size422.0 MB 87.5 MB
Events in quadrant A3,145,188591,549
Events in quadrant B3,190,244613,667
Events in quadrant C3,509,657585,735
Events in quadrant D3,134,221552,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132283
B0133402
C0142932
D0135792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6229190.305025%
B6229210.337133%
C6229120.192647%
D6229651.043506%

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 7505 6231 1 1 0.01% 0.02%
B 7505 6231 0 0 0.00% 0.00%
C 7505 6231 0 0 0.00% 0.00%
D 7505 6231 50 50 0.67% 0.80%

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 12 189 37890 236.36 785 771 157.0
A 1 162 37391 233.19 785 771 157.0
A 1 178 17372 105.71 785 771 157.0
B 10 16 37581 246.23 790 771 149.5
B 3 64 32086 209.48 790 771 149.5
B 0 214 19589 125.88 790 771 149.5
C 3 233 528036 3015.32 762 771 174.9
C 7 247 7829 40.36 762 771 174.9
C 13 61 5439 26.7 762 771 174.9
D 13 249 230368 1254.03 754 730 183.1
D 7 223 29160 155.25 754 730 183.1
D 2 234 19135 100.51 754 730 183.1

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