ASTROSAT CZTI

Data Quality Report

Orbit 37056

Creation date: 2024-06-27T21:34:41.528459
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_046T02_9000005274_37056cztM0_level2.evt modeM0/AS1A11_046T02_9000005274_37056cztM0_level2_quad_clean.evt
Size (bytes)576,469,44051,393,600
Size549.8 MB 49.0 MB
Events in quadrant A3,075,632316,193
Events in quadrant B3,613,393308,909
Events in quadrant C3,156,665308,481
Events in quadrant D7,256,260252,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125303
B0140882
C0125062
D0252652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5274220.417141%
B52742354.455821%
C5274551.042852%
D5274142627.038301%

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 7277 5275 7 7 0.10% 0.13%
B 7277 5275 159 159 2.18% 3.01%
C 7277 5275 46 46 0.63% 0.87%
D 7277 5275 1276 1276 17.53% 24.19%

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 260388 1867.18 700 689 139.1
A 11 254 101777 726.8 700 689 139.1
A 13 254 8335 54.97 700 689 139.1
B 5 172 670330 5275.57 676 662 126.9
B 5 200 90601 708.53 676 662 126.9
B 0 229 39159 303.28 676 662 126.9
C 15 214 225564 1468.12 668 674 153.2
C 0 10 133103 864.52 668 674 153.2
C 0 207 109516 710.54 668 674 153.2
D 12 17 2101702 14409.98 603 588 145.8
D 13 171 1033659 7085.07 603 588 145.8
D 1 52 616560 4224.5 603 588 145.8

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