ASTROSAT CZTI

Data Quality Report

Orbit 01275

Creation date: 2024-06-27T14:10:13.750273
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/AS1G04_011T02_9000000226_01275cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01275cztM0_level2_quad_clean.evt
Size (bytes)1,321,470,72088,755,840
Size1.2 GB 84.6 MB
Events in quadrant A7,142,337628,519
Events in quadrant B8,207,913631,505
Events in quadrant C7,431,889620,457
Events in quadrant D16,840,938384,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254882
B0286831
C0263831
D0548901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A603550.082850%
B6035530.878210%
C6035110.182270%
D6035383063.463132%

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 7185 6036 146 146 2.03% 2.42%
B 7185 6036 484 484 6.74% 8.02%
C 7185 6036 204 204 2.84% 3.38%
D 7185 6035 5511 5511 76.70% 91.32%

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 12 243 12368 23.88 1852 1860 440.0
A 13 9 10026 18.56 1852 1860 440.0
A 14 236 9286 16.88 1852 1860 440.0
B 8 4 596040 1319.23 1928 1931 450.3
B 6 53 134436 294.23 1928 1931 450.3
B 15 22 54430 116.58 1928 1931 450.3
C 15 241 285231 572.61 1795 1859 494.9
C 8 208 70861 139.43 1795 1859 494.9
C 3 79 29962 56.79 1795 1859 494.9
D 13 169 6119658 15990.29 1255 1300 382.6
D 10 84 3297241 8613.92 1255 1300 382.6
D 12 22 2665595 6963.12 1255 1300 382.6

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