ASTROSAT CZTI

Data Quality Report

Orbit 35331

Creation date: 2022-04-11T07:52:52.491513
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/AS1A11_093T01_9000005064_35331cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35331cztM0_level2_quad_clean.evt
Size (bytes)539,153,28077,267,520
Size514.2 MB 73.7 MB
Events in quadrant A2,529,591501,626
Events in quadrant B6,797,142453,078
Events in quadrant C2,841,382523,280
Events in quadrant D3,794,785484,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111673
B0239252
C0117602
D0147902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5389230.426795%
B5389144526.813880%
C5389821.521618%
D53892935.437001%

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 7122 5390 16 16 0.22% 0.30%
B 7122 5389 1070 1070 15.02% 19.86%
C 7122 5390 55 55 0.77% 1.02%
D 7122 5389 241 241 3.38% 4.47%

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 96531 780.38 606 594 122.9
A 8 192 35750 285.97 606 594 122.9
A 13 6 14469 112.86 606 594 122.9
B 5 236 3667319 35169.02 547 532 104.3
B 5 172 910858 8731.15 547 532 104.3
B 4 232 32447 306.1 547 532 104.3
C 0 10 291781 2122.43 593 596 137.2
C 15 214 223506 1624.78 593 596 137.2
C 14 67 8230 55.64 593 596 137.2
D 7 223 579459 4212.69 571 556 137.4
D 8 195 365739 2657.45 571 556 137.4
D 10 118 218329 1584.74 571 556 137.4

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