ASTROSAT CZTI

Data Quality Report

Orbit 18015

Creation date: 2024-06-27T17:43:53.425487
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_159T01_9000002678_18015cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18015cztM0_level2_quad_clean.evt
Size (bytes)481,144,32073,805,760
Size458.9 MB 70.4 MB
Events in quadrant A3,536,881448,065
Events in quadrant B3,350,212454,167
Events in quadrant C3,436,878437,272
Events in quadrant D3,792,197427,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145262
B0139322
C0139972
D0157012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67071201.789175%
B6707640.954227%
C6707751.118235%
D6707681.013866%

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 7632 6708 60 60 0.79% 0.89%
B 7632 6707 10 10 0.13% 0.15%
C 7632 6708 0 0 0.00% 0.00%
D 7632 6708 36 36 0.47% 0.54%

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 15 174 329501 1946.66 831 814 168.8
A 4 2 9189 49.6 831 814 168.8
A 0 226 7007 36.68 831 814 168.8
B 4 48 38636 233.93 836 813 161.7
B 12 111 18940 112.11 836 813 161.7
B 0 190 16809 98.93 836 813 161.7
C 3 233 150355 794.85 799 806 188.1
C 14 238 123405 651.61 799 806 188.1
C 0 207 12055 59.79 799 806 188.1
D 7 238 499198 2502.76 806 784 199.1
D 9 68 187815 939.16 806 784 199.1
D 2 234 27462 133.96 806 784 199.1

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