ASTROSAT CZTI

Data Quality Report

Orbit 17890

Creation date: 2024-06-27T17:42:14.852231
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_075T01_9000002660_17890cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17890cztM0_level2_quad_clean.evt
Size (bytes)474,649,92097,551,360
Size452.7 MB 93.0 MB
Events in quadrant A3,321,292629,560
Events in quadrant B3,464,065652,276
Events in quadrant C3,466,946628,590
Events in quadrant D3,700,625610,093

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139252
B0142852
C0143252
D0153512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217681.093775%
B6218921.479575%
C62181622.605339%
D6217791.270709%

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 8912 6219 0 0 0.00% 0.00%
B 8913 6220 5 5 0.06% 0.08%
C 8913 6220 29 29 0.33% 0.47%
D 8912 6219 24 24 0.27% 0.39%

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 6 16 108837 651.52 834 821 165.8
A 0 226 7273 38.92 834 821 165.8
A 12 194 6185 32.35 834 821 165.8
B 0 189 78076 486.94 847 829 158.6
B 0 197 41876 258.75 847 829 158.6
B 12 111 18018 108.35 847 829 158.6
C 14 238 127996 668.54 819 828 190.2
C 9 54 101585 529.7 819 828 190.2
C 3 233 25784 131.2 819 828 190.2
D 12 110 339580 1708.53 823 802 198.3
D 13 168 91979 459.82 823 802 198.3
D 10 70 51596 256.16 823 802 198.3

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