ASTROSAT CZTI

Data Quality Report

Orbit 02994

Creation date: 2024-06-27T14:23:11.059817
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/AS1G05_238T05_9000000418_02994cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02994cztM0_level2_quad_clean.evt
Size (bytes)431,432,64061,652,160
Size411.4 MB 58.8 MB
Events in quadrant A4,776,633373,689
Events in quadrant B2,783,581394,596
Events in quadrant C2,324,227379,541
Events in quadrant D2,833,833359,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177143
B0114272
C0104482
D0117862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51162915.688038%
B5116631.231431%
C511660.117279%
D51161152.247850%

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 7242 5117 204 204 2.82% 3.99%
B 7242 5117 40 40 0.55% 0.78%
C 7242 5117 1 1 0.01% 0.02%
D 7242 5117 98 98 1.35% 1.92%

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 9 1945460 16648.48 580 569 116.8
A 14 238 445991 3812.86 580 569 116.8
A 0 50 47138 398.64 580 569 116.8
B 8 3 121715 1067.2 596 584 113.5
B 5 70 111944 981.12 596 584 113.5
B 0 219 107576 942.63 596 584 113.5
C 6 80 74050 557.12 564 567 131.9
C 0 219 28515 211.89 564 567 131.9
C 1 192 5092 34.31 564 567 131.9
D 9 35 280465 2056.35 560 543 136.1
D 13 114 90117 658.02 560 543 136.1
D 7 80 87625 639.72 560 543 136.1

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