ASTROSAT CZTI

Data Quality Report

Orbit 11834

Creation date: 2024-06-27T16:18:55.355136
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/AS1A04_088T03_9000001750_11834cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11834cztM0_level2_quad_clean.evt
Size (bytes)223,499,52032,299,200
Size213.1 MB 30.8 MB
Events in quadrant A1,525,301200,119
Events in quadrant B2,162,909196,592
Events in quadrant C1,374,190195,748
Events in quadrant D1,516,394187,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062472
B082591
C057941
D062241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2758441.595359%
B27581906.889050%
C2758230.833938%
D2758551.994199%

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 3639 2760 2 2 0.05% 0.07%
B 3639 2760 74 74 2.03% 2.68%
C 3639 2760 1 1 0.03% 0.04%
D 3639 2760 28 28 0.77% 1.01%

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 1 162 50993 673.39 359 352 75.2
A 1 178 25422 333.36 359 352 75.2
A 1 161 22529 294.89 359 352 75.2
B 4 239 312618 4527.98 348 339 69.0
B 3 64 170929 2473.52 348 339 69.0
B 15 204 159709 2310.83 348 339 69.0
C 7 238 20234 244.53 344 345 81.3
C 0 10 5010 57.36 344 345 81.3
C 12 4 3498 38.77 344 345 81.3
D 13 249 84125 990.0 345 334 84.6
D 1 52 57540 675.89 345 334 84.6
D 12 233 37439 438.4 345 334 84.6

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