ASTROSAT CZTI

Data Quality Report

Orbit 20973

Creation date: 2024-06-27T18:21:57.097531
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/AS1T03_131T01_9000003090_20973cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20973cztM0_level2_quad_clean.evt
Size (bytes)501,477,12083,689,920
Size478.2 MB 79.8 MB
Events in quadrant A3,254,876526,712
Events in quadrant B3,408,785545,414
Events in quadrant C3,359,838524,931
Events in quadrant D4,726,509487,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134362
B0138852
C0136342
D0180913

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6442270.419124%
B6442430.667495%
C6442600.931388%
D64413745.806552%

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 7797 6443 4 4 0.05% 0.06%
B 7797 6443 2 2 0.03% 0.03%
C 7797 6443 0 0 0.00% 0.00%
D 7796 6441 441 441 5.66% 6.85%

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 2 79 10315 56.65 844 829 167.4
A 0 226 7400 39.24 844 829 167.4
A 3 137 6516 33.96 844 829 167.4
B 4 216 19141 115.06 858 840 159.1
B 12 111 18516 111.13 858 840 159.1
B 11 111 16143 96.21 858 840 159.1
C 14 238 132974 693.6 825 836 190.5
C 13 61 5800 26.06 825 836 190.5
C 7 247 5794 26.02 825 836 190.5
D 1 52 1384638 7098.82 812 790 194.9
D 15 0 146510 747.51 812 790 194.9
D 9 1 111632 568.59 812 790 194.9

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