ASTROSAT CZTI

Data Quality Report

Orbit 31589

Creation date: 2024-06-27T20:30:25.788371
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/AS1C06_002T03_9000004610_31589cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31589cztM0_level2_quad_clean.evt
Size (bytes)15,906,2403,971,520
Size15.2 MB 3.8 MB
Events in quadrant A96,53126,832
Events in quadrant B137,90922,353
Events in quadrant C112,68128,202
Events in quadrant D117,31020,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020771636
B031842634
C022081732
D029342458

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02117
B01511
C02620
D01818

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B066
C033
D011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21900.000000%
B18310.546448%
C23220.862069%
D17100.000000%

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 1896 290 0 0 0.00% 0.00%
B 615 246 0 0 0.00% 0.00%
C 1949 299 0 0 0.00% 0.00%
D 653 233 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 13 254 353 46.41 24 24 7.1
A 3 137 255 32.58 24 24 7.1
A 0 226 208 25.95 24 24 7.1
B 6 159 52785 8809.75 20 20 6.0
B 12 1 1547 254.95 20 20 6.0
B 4 80 1414 232.75 20 20 6.0
C 3 233 7780 987.17 25 24 7.9
C 14 238 4520 572.24 25 24 7.9
C 4 175 607 74.2 25 24 7.9
D 8 195 35049 5623.14 18 17 6.2
D 12 218 9285 1487.65 18 17 6.2
D 7 223 2389 380.74 18 17 6.2

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