ASTROSAT CZTI

Data Quality Report

Orbit 25538

Creation date: 2024-06-27T19:18:47.773716
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/AS1A07_147T01_9000003722_25538cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25538cztM0_level2_quad_clean.evt
Size (bytes)509,529,60096,448,320
Size485.9 MB 92.0 MB
Events in quadrant A3,363,137627,524
Events in quadrant B3,396,342636,652
Events in quadrant C3,375,253595,311
Events in quadrant D4,830,839583,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142600
B0142700
C0142970
D0188630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68531712.495258%
B68542002.918004%
C68542153.136854%
D68543064.464546%

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 7053 6854 0 0 0.00% 0.00%
B 7054 6855 0 0 0.00% 0.00%
C 7054 6855 0 0 0.00% 0.00%
D 7054 6855 154 154 2.18% 2.25%

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 10669 55.5 870 850 176.9
A 3 137 8175 41.4 870 850 176.9
A 0 226 7286 36.38 870 850 176.9
B 12 111 20524 118.07 857 834 166.8
B 11 111 18889 108.27 857 834 166.8
B 14 111 16900 96.34 857 834 166.8
C 14 238 131329 661.82 826 829 197.2
C 2 16 20205 98.26 826 829 197.2
C 3 233 6013 26.29 826 829 197.2
D 1 52 1311886 5908.58 830 813 221.9
D 8 195 242336 1088.46 830 813 221.9
D 2 244 89681 400.5 830 813 221.9

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