ASTROSAT CZTI

Data Quality Report

Orbit 17444

Creation date: 2024-06-27T17:36:38.189341
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/AS1A05_068T01_9000002580_17444cztM0_level2.evt modeM0/AS1A05_068T01_9000002580_17444cztM0_level2_quad_clean.evt
Size (bytes)487,368,00085,400,640
Size464.8 MB 81.4 MB
Events in quadrant A3,336,900541,559
Events in quadrant B3,446,426538,834
Events in quadrant C3,599,715519,195
Events in quadrant D3,919,370516,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141482
B0144262
C0148272
D0162352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6741771.142264%
B6741941.394452%
C67401512.240356%
D67401392.062315%

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 8906 6743 0 0 0.00% 0.00%
B 8906 6742 2 2 0.02% 0.03%
C 8905 6742 0 0 0.00% 0.00%
D 8905 6742 44 44 0.49% 0.65%

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 0 226 7523 38.05 865 847 175.4
A 12 194 6435 31.85 865 847 175.4
A 3 137 6292 31.04 865 847 175.4
B 0 197 24712 145.47 860 839 164.1
B 12 111 19116 111.37 860 839 164.1
B 11 111 16208 93.65 860 839 164.1
C 3 233 163335 832.45 829 837 195.2
C 14 238 130227 662.84 829 837 195.2
C 5 218 65294 330.2 829 837 195.2
D 13 232 321120 1557.02 842 818 205.7
D 11 176 110206 531.74 842 818 205.7
D 10 70 88398 425.73 842 818 205.7

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