ASTROSAT CZTI

Data Quality Report

Orbit 32661

Creation date: 2024-06-27T20:40:36.138919
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/AS1A10_057T03_9000004722_32661cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32661cztM0_level2_quad_clean.evt
Size (bytes)814,455,36065,900,160
Size776.7 MB 62.8 MB
Events in quadrant A3,016,840417,938
Events in quadrant B5,989,996397,883
Events in quadrant C4,858,269408,354
Events in quadrant D10,397,570352,698

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127773
B0220342
C0183802
D0349222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5981300.501588%
B59815899.847852%
C59815058.443404%
D5981321453.736833%

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 7294 5982 17 17 0.23% 0.28%
B 7294 5982 394 394 5.40% 6.59%
C 7294 5982 386 386 5.29% 6.45%
D 7294 5982 3066 3066 42.03% 51.25%

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 15 249 148116 1040.22 704 691 141.7
A 9 191 33533 231.73 704 691 141.7
A 13 6 24220 166.02 704 691 141.7
B 3 26 774223 5877.61 693 680 131.6
B 12 1 764731 5805.48 693 680 131.6
B 0 219 557419 4230.27 693 680 131.6
C 4 237 576772 3763.47 658 663 153.1
C 8 35 357054 2328.15 658 663 153.1
C 8 50 330057 2151.79 658 663 153.1
D 12 33 2899017 27354.23 442 432 106.0
D 7 80 2354215 22212.88 442 432 106.0
D 12 227 814505 7682.49 442 432 106.0

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