ASTROSAT CZTI

Data Quality Report

Orbit 10642

Creation date: 2024-06-27T16:01:53.653542
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/AS1T01_191T01_9000001536_10642cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10642cztM0_level2_quad_clean.evt
Size (bytes)651,418,56096,793,920
Size621.2 MB 92.3 MB
Events in quadrant A4,511,342611,227
Events in quadrant B4,972,644606,924
Events in quadrant C4,732,363601,292
Events in quadrant D4,982,687568,653

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184673
B0198922
C0194062
D0199332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78093654.674094%
B78096017.696248%
C78095366.863875%
D78093544.533231%

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 7954 7811 166 166 2.09% 2.13%
B 7954 7811 201 201 2.53% 2.57%
C 7954 7811 282 282 3.55% 3.61%
D 7954 7811 148 148 1.86% 1.89%

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 15 239 798531 4129.68 940 922 193.1
A 13 251 28902 144.87 940 922 193.1
A 1 162 18565 91.35 940 922 193.1
B 4 239 1091246 6044.12 935 913 180.4
B 4 81 73860 404.37 935 913 180.4
B 0 214 49023 266.69 935 913 180.4
C 4 254 842915 4023.27 901 908 209.3
C 14 234 372826 1777.1 901 908 209.3
C 13 61 6704 27.69 901 908 209.3
D 12 221 402065 1807.81 905 880 221.9
D 12 233 329633 1481.42 905 880 221.9
D 8 195 306239 1376.0 905 880 221.9

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