ASTROSAT CZTI

Data Quality Report

Orbit 35763

Creation date: 2022-07-18T21:40:07.681354
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/AS1A10_058T14_9000005134_35763cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35763cztM0_level2_quad_clean.evt
Size (bytes)430,704,00058,639,680
Size410.8 MB 55.9 MB
Events in quadrant A2,698,752354,861
Events in quadrant B3,336,451353,489
Events in quadrant C3,255,356340,699
Events in quadrant D3,372,841334,580

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114833
B0134102
C0130342
D0138512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559940.071441%
B55991572.804072%
C55991192.125380%
D5599861.535989%

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 8646 5601 0 0 0.00% 0.00%
B 8646 5601 107 107 1.24% 1.91%
C 8646 5600 105 105 1.21% 1.88%
D 8646 5601 94 94 1.09% 1.68%

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 157489 1207.38 646 633 129.9
A 15 223 26136 196.31 646 633 129.9
A 13 6 14601 107.52 646 633 129.9
B 5 172 570185 4674.1 636 621 121.9
B 5 255 69992 569.29 636 621 121.9
B 0 189 43460 351.56 636 621 121.9
C 1 23 540855 3760.11 617 620 143.7
C 15 214 234296 1626.41 617 620 143.7
C 0 10 50243 345.38 617 620 143.7
D 7 80 335914 2208.78 621 604 151.8
D 14 52 267896 1760.73 621 604 151.8
D 13 249 159505 1046.73 621 604 151.8

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