ASTROSAT CZTI

Data Quality Report

Orbit 37567

Creation date: 2024-06-27T21:41:37.519577
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/AS1C07_001T11_9000005336_37567cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37567cztM0_level2_quad_clean.evt
Size (bytes)421,070,40097,441,920
Size401.6 MB 92.9 MB
Events in quadrant A2,634,545644,906
Events in quadrant B2,845,352659,410
Events in quadrant C2,623,086662,402
Events in quadrant D4,281,602605,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113093
B0121822
C0112672
D0166892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5405100.185014%
B5405711.313599%
C5405160.296022%
D54054348.029602%

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 7256 5406 2 2 0.03% 0.04%
B 7256 5406 43 43 0.59% 0.80%
C 7256 5406 14 14 0.19% 0.26%
D 7256 5405 394 394 5.43% 7.29%

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 311970 2622.42 587 574 118.7
A 12 189 14829 120.05 587 574 118.7
A 9 143 14357 116.07 587 574 118.7
B 5 172 144220 1287.31 587 571 111.6
B 5 255 115287 1028.03 587 571 111.6
B 0 213 91795 817.5 587 571 111.6
C 15 214 232863 1739.65 576 579 133.5
C 0 10 94311 701.99 576 579 133.5
C 15 159 25471 186.42 576 579 133.5
D 13 249 1116123 8210.03 555 539 135.9
D 2 250 278637 2046.63 555 539 135.9
D 12 233 182907 1342.12 555 539 135.9

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