ASTROSAT CZTI

Data Quality Report

Orbit 31819

Creation date: 2024-06-27T20:33:08.883643
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_109T01_9000004646_31819cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31819cztM0_level2_quad_clean.evt
Size (bytes)685,961,280102,490,560
Size654.2 MB 97.7 MB
Events in quadrant A4,313,189674,206
Events in quadrant B6,258,279667,246
Events in quadrant C4,659,599646,752
Events in quadrant D5,083,931641,030

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171722
B0234263
C0184522
D0197442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68034015.894458%
B68025538.129962%
C68024416.483387%
D68032643.880641%

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 7653 6804 217 217 2.84% 3.19%
B 7652 6803 328 328 4.29% 4.82%
C 7652 6803 114 114 1.49% 1.68%
D 7653 6804 139 139 1.82% 2.04%

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 0 13 951385 5499.69 865 849 172.8
A 13 6 14425 78.55 865 849 172.8
A 13 254 13925 75.65 865 849 172.8
B 6 159 1757054 10772.1 850 829 163.0
B 10 245 1128015 6913.78 850 829 163.0
B 12 111 19580 115.01 850 829 163.0
C 0 10 631917 3227.02 830 839 195.6
C 3 233 545110 2783.14 830 839 195.6
C 14 238 164866 838.75 830 839 195.6
D 8 195 1151311 5664.41 850 830 203.1
D 12 218 349662 1717.48 850 830 203.1
D 12 233 157189 769.84 850 830 203.1

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