ASTROSAT CZTI

Data Quality Report

Orbit 40115

Creation date: 2024-06-27T22:12:31.223856
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/AS1A12_004T01_9000005520_40115cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40115cztM0_level2_quad_clean.evt
Size (bytes)388,661,76087,238,080
Size370.7 MB 83.2 MB
Events in quadrant A2,770,396593,916
Events in quadrant B2,466,017617,188
Events in quadrant C5,457,581534,533
Events in quadrant D3,280,028524,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117683
B0110962
C0198362
D0136452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309120.226031%
B5309170.320211%
C530965312.299868%
D53091923.616500%

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 9523 5311 3 3 0.03% 0.06%
B 9523 5311 10 10 0.11% 0.19%
C 9523 5311 637 637 6.69% 11.99%
D 9523 5311 189 189 1.98% 3.56%

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 459805 3930.38 568 557 116.8
A 12 189 101140 860.82 568 557 116.8
A 9 143 8145 64.94 568 557 116.8
B 4 171 127115 1146.98 567 552 110.3
B 5 255 62674 562.98 567 552 110.3
B 0 189 38643 345.2 567 552 110.3
C 9 187 3084789 25073.47 529 534 123.0
C 15 214 213244 1729.23 529 534 123.0
C 0 10 42476 340.97 529 534 123.0
D 12 227 604257 4540.02 544 530 133.0
D 2 249 225108 1688.83 544 530 133.0
D 12 0 121826 912.15 544 530 133.0

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