ASTROSAT CZTI

Data Quality Report

Orbit 37561

Creation date: 2024-06-27T21:41:32.275042
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_37561cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37561cztM0_level2_quad_clean.evt
Size (bytes)479,269,44099,915,840
Size457.1 MB 95.3 MB
Events in quadrant A2,806,635691,108
Events in quadrant B2,984,456695,540
Events in quadrant C2,907,380686,684
Events in quadrant D5,444,060568,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118703
B0125152
C0120302
D0199462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5477130.237356%
B5477611.113748%
C5477490.894650%
D5477120221.946321%

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 7240 5478 5 5 0.07% 0.09%
B 7240 5478 47 47 0.65% 0.86%
C 7240 5478 45 45 0.62% 0.82%
D 7239 5477 1180 1180 16.30% 21.54%

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 346628 2752.36 619 605 125.7
A 12 189 26891 209.09 619 605 125.7
A 9 143 24303 188.5 619 605 125.7
B 5 172 132767 1153.25 616 600 114.6
B 0 230 65533 566.58 616 600 114.6
B 0 213 47895 412.68 616 600 114.6
C 15 214 250276 1777.04 607 611 140.5
C 14 254 193286 1371.41 607 611 140.5
C 0 10 86289 609.83 607 611 140.5
D 12 235 1824948 14083.32 530 515 129.5
D 2 249 852704 6578.29 530 515 129.5
D 12 233 281906 2172.14 530 515 129.5

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