ASTROSAT CZTI

Data Quality Report

Orbit 16486

Creation date: 2024-06-27T17:23:24.296380
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/AS1A05_108T01_9000002438_16486cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16486cztM0_level2_quad_clean.evt
Size (bytes)474,667,20097,680,960
Size452.7 MB 93.2 MB
Events in quadrant A3,450,271625,303
Events in quadrant B3,589,979655,072
Events in quadrant C3,566,298623,353
Events in quadrant D3,325,652599,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143703
B0146912
C0145292
D0142962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65251241.900383%
B65251251.915709%
C6525490.750958%
D6525640.980843%

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 7851 6526 80 80 1.02% 1.23%
B 7851 6526 56 56 0.71% 0.86%
C 7851 6527 0 0 0.00% 0.00%
D 7851 6527 57 57 0.73% 0.87%

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 15 174 342471 2106.77 808 795 162.2
A 0 226 7094 38.84 808 795 162.2
A 12 194 5935 31.69 808 795 162.2
B 4 48 142936 912.2 829 812 155.8
B 15 35 83637 531.6 829 812 155.8
B 0 189 41788 263.0 829 812 155.8
C 3 233 274671 1477.43 797 803 185.4
C 14 238 124819 669.03 797 803 185.4
C 7 247 59940 319.03 797 803 185.4
D 12 218 206454 1065.02 791 768 193.1
D 10 70 45903 233.7 791 768 193.1
D 2 234 29249 147.47 791 768 193.1

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