ASTROSAT CZTI

Data Quality Report

Orbit 34772

Creation date: 2022-03-04T14:08:52.698993
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_004T01_9000004990_34772cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34772cztM0_level2_quad_clean.evt
Size (bytes)475,876,80059,950,080
Size453.8 MB 57.2 MB
Events in quadrant A2,475,727368,485
Events in quadrant B2,640,457380,956
Events in quadrant C2,833,911380,894
Events in quadrant D6,118,185329,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01035514
B01079516
C0111187
D02182790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506890.177585%
B5066180.355310%
C5072360.709779%
D505979315.675035%

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 7078 5074 0 0 0.00% 0.00%
B 7078 5074 5 5 0.07% 0.10%
C 7078 5075 23 23 0.32% 0.45%
D 7078 5072 714 714 10.09% 14.08%

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 47847 378.33 623 611 124.9
A 13 6 14352 110.06 623 611 124.9
A 15 174 9125 68.19 623 611 124.9
B 5 255 94149 785.82 621 606 119.0
B 0 190 52789 438.37 621 606 119.0
B 12 111 14423 116.07 621 606 119.0
C 15 214 219819 1551.22 610 617 141.3
C 0 10 107422 755.82 610 617 141.3
C 14 67 96296 677.09 610 617 141.3
D 8 195 1216546 8660.74 578 563 140.4
D 10 118 1196405 8517.29 578 563 140.4
D 2 250 1005687 7158.91 578 563 140.4

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