ASTROSAT CZTI

Data Quality Report

Orbit 20170411_A03_093T01_9000001156_level2

Creation date: 2025-11-11T10:33:10.227298
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/AS1A03_093T01_9000001156cztM0_level2.fits modeM0/AS1A03_093T01_9000001156cztM0_level2_quad_clean.evt
Size (bytes)747,524,160734,673,600
Size712.9 MB 700.6 MB
Events in quadrant A4,250,8843,857,369
Events in quadrant B4,453,4044,568,883
Events in quadrant C4,520,6024,337,501
Events in quadrant D3,942,1464,018,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02285680
B01703040
C01656500
D01698690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016240
B016240
C016240
D016240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79746987212.379304%
B7974812931.621357%
C797467650.959296%
D7974910161.273997%

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 92032 77880 0 0 0.00% 0.00%
B 92032 79744 0 0 0.00% 0.00%
C 92032 79749 0 0 0.00% 0.00%
D 92032 79748 0 0 0.00% 0.00%

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 29 4041 10.71 1105 1031 281.0
A 7 110 3502 8.79 1105 1031 281.0
A 0 30 3115 7.42 1105 1031 281.0
B 2 9 3903 11.91 1172 1113 234.4
B 14 254 3022 8.15 1172 1113 234.4
B 12 226 2977 7.95 1172 1113 234.4
C 1 80 3242 6.76 1193 1101 316.5
C 12 241 3235 6.74 1193 1101 316.5
C 1 81 3233 6.74 1193 1101 316.5
D 3 14 2981 6.5 1124 1018 302.0
D 7 5 2861 6.1 1124 1018 302.0
D 1 19 2842 6.04 1124 1018 302.0

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