ASTROSAT CZTI

Data Quality Report

Orbit 28836

Creation date: 2024-06-27T19:56:59.799134
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_121T01_9000004134_28836cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28836cztM0_level2_quad_clean.evt
Size (bytes)599,748,48097,168,320
Size572.0 MB 92.7 MB
Events in quadrant A2,834,326657,922
Events in quadrant B2,930,388676,187
Events in quadrant C5,155,453608,808
Events in quadrant D6,846,874589,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120191
B0122751
C0196121
D0244231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5850560.957265%
B5851701.196377%
C585171712.254316%
D585185414.595796%

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 6920 5850 0 0 0.00% 0.00%
B 6921 5851 2 2 0.03% 0.03%
C 6921 5851 89 89 1.29% 1.52%
D 6921 5851 811 811 11.72% 13.86%

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 10045 63.72 732 716 146.4
A 0 226 6470 39.3 732 716 146.4
A 3 137 6469 39.29 732 716 146.4
B 5 255 55445 399.8 728 710 136.9
B 12 111 15843 110.54 728 710 136.9
B 11 111 14163 98.26 728 710 136.9
C 3 233 1911580 12053.47 685 688 158.5
C 4 254 223378 1404.68 685 688 158.5
C 14 238 203929 1282.0 685 688 158.5
D 1 52 2890657 17645.16 688 671 163.8
D 8 195 797469 4864.95 688 671 163.8
D 12 33 238096 1449.63 688 671 163.8

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