ASTROSAT CZTI

Data Quality Report

Orbit 04788

Creation date: 2024-06-27T14:47:01.502056
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/AS1G05_156T09_9000000604_04788cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04788cztM0_level2_quad_clean.evt
Size (bytes)452,551,68083,220,480
Size431.6 MB 79.4 MB
Events in quadrant A3,491,623532,327
Events in quadrant B3,292,065521,991
Events in quadrant C2,799,854519,000
Events in quadrant D3,693,257506,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147162
B0139711
C0128681
D0153821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63082774.391249%
B6308801.268231%
C6308440.697527%
D63081272.013316%

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 7398 6308 163 163 2.20% 2.58%
B 7398 6308 26 26 0.35% 0.41%
C 7398 6308 0 0 0.00% 0.00%
D 7398 6309 77 77 1.04% 1.22%

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 50 559768 3794.05 725 709 147.4
A 8 15 50231 336.08 725 709 147.4
A 0 118 33439 222.12 725 709 147.4
B 10 16 125349 894.75 737 721 139.3
B 4 80 113953 812.94 737 721 139.3
B 15 204 112673 803.75 737 721 139.3
C 13 61 5865 30.84 716 718 166.9
C 5 96 2194 8.85 716 718 166.9
C 3 202 1844 6.75 716 718 166.9
D 13 235 382504 2241.93 718 698 170.3
D 2 136 248152 1453.03 718 698 170.3
D 2 234 172981 1011.63 718 698 170.3

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