ASTROSAT CZTI

Data Quality Report

Orbit 30829

Creation date: 2024-06-27T20:20:05.706549
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_071T38_9000004454_30829cztM0_level2.evt modeM0/AS1A10_071T38_9000004454_30829cztM0_level2_quad_clean.evt
Size (bytes)664,272,00089,928,000
Size633.5 MB 85.8 MB
Events in quadrant A3,131,515612,226
Events in quadrant B5,098,225613,872
Events in quadrant C3,801,093559,815
Events in quadrant D7,654,777490,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132832
B0195672
C0153442
D0272473

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6384370.579574%
B6384981.535088%
C63845448.521303%
D6383116318.220273%

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 7519 6384 0 0 0.00% 0.00%
B 7519 6384 12 12 0.16% 0.19%
C 7519 6384 50 50 0.66% 0.78%
D 7518 6383 1083 1083 14.41% 16.97%

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 13 254 12413 71.19 811 795 163.2
A 3 137 7849 43.22 811 795 163.2
A 0 226 6869 37.22 811 795 163.2
B 6 159 1801520 11729.65 806 786 153.5
B 5 255 36485 232.54 806 786 153.5
B 0 230 19725 123.37 806 786 153.5
C 14 238 275073 1553.79 750 757 176.5
C 0 10 222560 1256.34 750 757 176.5
C 14 254 207030 1168.38 750 757 176.5
D 12 218 2167670 12978.13 712 696 167.0
D 8 195 1900458 11377.78 712 696 167.0
D 12 2 506789 3031.02 712 696 167.0

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