ASTROSAT CZTI

Data Quality Report

Orbit 15894

Creation date: 2024-06-27T17:14:51.870363
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/AS1A04_143T01_9000002344_15894cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15894cztM0_level2_quad_clean.evt
Size (bytes)487,005,12099,843,840
Size464.4 MB 95.2 MB
Events in quadrant A3,686,959639,310
Events in quadrant B3,666,009665,518
Events in quadrant C3,581,331628,690
Events in quadrant D3,349,523613,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153863
B0152372
C0148722
D0146002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68432042.981149%
B68431392.031273%
C68431171.709776%
D6843330.482245%

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 9464 6846 56 56 0.59% 0.82%
B 9464 6846 1 1 0.01% 0.01%
C 9464 6846 0 0 0.00% 0.00%
D 9464 6846 5 5 0.05% 0.07%

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 15 239 290837 1640.36 876 859 176.8
A 13 248 10235 53.04 876 859 176.8
A 15 157 9274 47.6 876 859 176.8
B 4 173 70760 411.96 894 872 169.6
B 5 236 36978 212.83 894 872 169.6
B 0 189 27142 154.85 894 872 169.6
C 14 238 130914 648.83 856 863 200.4
C 3 233 95630 472.79 856 863 200.4
C 0 207 6516 28.2 856 863 200.4
D 12 218 53132 248.45 862 838 210.5
D 2 234 29206 134.78 862 838 210.5
D 9 68 17810 80.63 862 838 210.5

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