ASTROSAT CZTI

Data Quality Report

Orbit 16104

Creation date: 2024-06-27T17:18:03.199095
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/AS1A04_209T01_9000002378_16104cztM0_level2.evt modeM0/AS1A04_209T01_9000002378_16104cztM0_level2_quad_clean.evt
Size (bytes)537,848,640109,874,880
Size512.9 MB 104.8 MB
Events in quadrant A3,714,894704,241
Events in quadrant B4,575,917709,239
Events in quadrant C3,837,502682,766
Events in quadrant D3,621,737679,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161443
B0187082
C0164342
D0162232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7932510.642965%
B79321832.307110%
C7932851.071609%
D7932320.403429%

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 9508 7933 0 0 0.00% 0.00%
B 9508 7933 92 92 0.97% 1.16%
C 9508 7933 5 5 0.05% 0.06%
D 9508 7933 2 2 0.02% 0.03%

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 22185 108.91 960 939 195.1
A 0 226 8197 37.2 960 939 195.1
A 12 194 7130 31.73 960 939 195.1
B 4 173 546159 2935.6 955 928 185.7
B 0 189 264715 1420.26 955 928 185.7
B 12 111 22241 114.75 955 928 185.7
C 14 238 137636 632.66 918 923 216.1
C 9 236 90707 415.49 918 923 216.1
C 0 207 11407 48.52 918 923 216.1
D 13 112 30032 127.41 936 908 228.6
D 2 234 28939 122.63 936 908 228.6
D 13 172 23437 98.56 936 908 228.6

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