ASTROSAT CZTI

Data Quality Report

Orbit 15954

Creation date: 2024-06-27T17:15:39.215180
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/AS1G08_081T01_9000002350_15954cztM0_level2.evt modeM0/AS1G08_081T01_9000002350_15954cztM0_level2_quad_clean.evt
Size (bytes)527,523,840111,026,880
Size503.1 MB 105.9 MB
Events in quadrant A4,025,757711,649
Events in quadrant B3,942,845724,631
Events in quadrant C3,828,652698,684
Events in quadrant D3,650,455686,271

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171743
B0168482
C0164622
D0164122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7783400.513941%
B7783781.002184%
C7783911.169215%
D7783230.295516%

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 9284 7786 1 1 0.01% 0.01%
B 9284 7786 9 9 0.10% 0.12%
C 9284 7786 8 8 0.09% 0.10%
D 9284 7786 15 15 0.16% 0.19%

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 13 210 421329 2215.09 934 911 189.8
A 0 226 8310 38.98 934 911 189.8
A 12 194 6889 31.49 934 911 189.8
B 15 222 60933 332.99 938 914 180.2
B 5 65 55796 304.49 938 914 180.2
B 0 189 43487 236.2 938 914 180.2
C 14 238 137170 637.88 908 915 213.6
C 9 236 75498 349.16 908 915 213.6
C 3 233 64789 299.03 908 915 213.6
D 2 33 89597 399.71 913 886 221.9
D 2 152 38276 168.47 913 886 221.9
D 2 234 33705 147.87 913 886 221.9

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