ASTROSAT CZTI

Data Quality Report

Orbit 19911

Creation date: 2024-06-27T18:08:40.268416
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_064T01_9000002964_19911cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19911cztM0_level2_quad_clean.evt
Size (bytes)1,586,257,920244,258,560
Size1.5 GB 232.9 MB
Events in quadrant A7,045,2251,714,115
Events in quadrant B8,049,7921,726,065
Events in quadrant C7,770,8061,670,666
Events in quadrant D24,131,2091,217,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313193
B0336113
C0329573
D0822943

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154591420.918559%
B154592391.546025%
C154602341.513583%
D15460663442.910737%

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 17544 15459 5 5 0.03% 0.03%
B 17544 15459 66 66 0.38% 0.43%
C 17545 15460 30 30 0.17% 0.19%
D 17545 15460 6054 6054 34.51% 39.16%

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 15890 38.8 1818 1779 363.7
A 5 16 15086 36.59 1818 1779 363.7
A 3 137 14184 34.11 1818 1779 363.7
B 7 220 483667 1422.96 1812 1767 338.7
B 0 230 89811 259.98 1812 1767 338.7
B 0 197 78471 226.49 1812 1767 338.7
C 9 221 595642 1455.85 1750 1758 407.9
C 14 238 272944 664.79 1750 1758 407.9
C 0 207 58392 138.83 1750 1758 407.9
D 2 184 9463162 27521.96 1426 1384 343.8
D 7 38 6605827 19210.68 1426 1384 343.8
D 1 52 1622401 4715.14 1426 1384 343.8

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