ASTROSAT CZTI

Data Quality Report

Orbit 36578

Creation date: 2024-06-27T21:28:40.428343
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/AS1A11_097T17_9000005222_36578cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36578cztM0_level2_quad_clean.evt
Size (bytes)461,131,20062,867,520
Size439.8 MB 60.0 MB
Events in quadrant A2,905,770394,961
Events in quadrant B2,730,516400,044
Events in quadrant C3,690,283384,597
Events in quadrant D4,288,557362,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116503
B0110422
C0141022
D0162262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5163100.193686%
B516370.135580%
C51632544.919620%
D51632574.977726%

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 7136 5164 4 4 0.06% 0.08%
B 7136 5164 0 0 0.00% 0.00%
C 7136 5164 188 188 2.63% 3.64%
D 7136 5164 215 215 3.01% 4.16%

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 196977 1464.62 674 664 134.0
A 15 223 92085 682.06 674 664 134.0
A 9 143 12421 87.71 674 664 134.0
B 0 213 41691 327.5 665 650 125.3
B 0 189 27656 215.5 665 650 125.3
B 12 111 14997 114.49 665 650 125.3
C 0 10 857287 5965.74 626 633 143.6
C 15 214 217922 1513.2 626 633 143.6
C 14 254 134671 933.44 626 633 143.6
D 12 235 667454 4316.15 637 618 154.5
D 2 250 248248 1602.81 637 618 154.5
D 12 16 217211 1401.92 637 618 154.5

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