ASTROSAT CZTI

Data Quality Report

Orbit 28269

Creation date: 2024-06-27T19:49:51.566636
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/AS1A10_067T01_9000004076_28269cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28269cztM0_level2_quad_clean.evt
Size (bytes)550,560,960112,049,280
Size525.1 MB 106.9 MB
Events in quadrant A3,353,682760,941
Events in quadrant B3,471,161781,514
Events in quadrant C3,379,386723,234
Events in quadrant D6,031,645676,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138160
B0142570
C0139610
D0223160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469350.541042%
B6468590.912183%
C6468871.345083%
D64685057.807669%

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 7809 6470 3 3 0.04% 0.05%
B 7808 6469 2 2 0.03% 0.03%
C 7808 6469 0 0 0.00% 0.00%
D 7808 6468 404 404 5.17% 6.25%

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 13 254 10884 58.82 867 853 170.5
A 12 96 10631 57.34 867 853 170.5
A 3 137 7710 40.21 867 853 170.5
B 10 245 26663 159.15 871 851 162.2
B 10 246 25674 153.05 871 851 162.2
B 12 111 19446 114.65 871 851 162.2
C 14 238 137360 708.14 827 835 192.8
C 15 208 12066 58.25 827 835 192.8
C 3 233 8782 41.22 827 835 192.8
D 1 52 1849407 9842.04 799 779 187.8
D 8 195 756379 4022.79 799 779 187.8
D 7 238 107024 565.65 799 779 187.8

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