ASTROSAT CZTI

Data Quality Report

Orbit 16143

Creation date: 2024-06-27T17:18:37.033376
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/AS1T02_092T01_9000002384_16143cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16143cztM0_level2_quad_clean.evt
Size (bytes)558,256,320103,150,080
Size532.4 MB 98.4 MB
Events in quadrant A3,647,361680,236
Events in quadrant B4,079,434672,389
Events in quadrant C3,748,557643,790
Events in quadrant D4,930,625613,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157003
B0169532
C0158442
D0197042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7380851.151762%
B73801311.775068%
C73801111.504065%
D73804576.192412%

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 7696 7382 25 25 0.32% 0.34%
B 7696 7382 41 41 0.53% 0.56%
C 7696 7382 13 13 0.17% 0.18%
D 7696 7382 357 357 4.64% 4.84%

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 182919 1021.12 887 870 178.3
A 0 253 16677 88.66 887 870 178.3
A 13 248 14850 78.41 887 870 178.3
B 5 65 164999 970.13 885 864 169.2
B 0 189 139829 821.36 885 864 169.2
B 7 220 79557 465.12 885 864 169.2
C 3 233 206696 1029.01 848 854 200.0
C 14 238 130464 647.92 848 854 200.0
C 0 207 82796 409.63 848 854 200.0
D 7 38 870575 4166.08 844 817 208.8
D 1 52 646771 3094.08 844 817 208.8
D 5 222 82149 389.57 844 817 208.8

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