ASTROSAT CZTI

Data Quality Report

Orbit 20231130_A13_074T08_9000005966_level2

Creation date: 2023-12-04T13:12:32.971935
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/AS1A13_074T08_9000005966cztM0_level2.fits modeM0/AS1A13_074T08_9000005966cztM0_level2_quad_clean.evt
Size (bytes)270,086,400232,905,600
Size257.6 MB 222.1 MB
Events in quadrant A1,617,5341,311,872
Events in quadrant B1,545,0681,307,303
Events in quadrant C1,627,4121,271,667
Events in quadrant D1,325,9481,099,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0885300
B0767280
C0643360
D0922420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A299828492.831699%
B2998213334.446001%
C299824771.590955%
D2998225888.631846%

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 34687 29983 0 0 0.00% 0.00%
B 34687 29968 0 0 0.00% 0.00%
C 34687 29981 0 0 0.00% 0.00%
D 34687 29805 0 0 0.00% 0.00%

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 7 110 1352 8.8 422 394 108.9
A 15 236 1254 7.9 422 394 108.9
A 7 109 1245 7.81 422 394 108.9
B 2 9 1383 11.95 409 389 83.2
B 2 8 1125 8.84 409 389 83.2
B 5 232 1023 7.62 409 389 83.2
C 1 80 1243 7.53 431 401 111.7
C 1 81 1242 7.53 431 401 111.7
C 3 158 1134 6.56 431 401 111.7
D 6 38 991 6.07 382 347 106.1
D 4 12 984 6.0 382 347 106.1
D 10 189 958 5.76 382 347 106.1

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