ASTROSAT CZTI

Data Quality Report

Orbit 17683

Creation date: 2024-06-27T17:39:29.344413
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/AS1C04_009T02_9000002618_17683cztM0_level2.evt modeM0/AS1C04_009T02_9000002618_17683cztM0_level2_quad_clean.evt
Size (bytes)338,388,48096,719,040
Size322.7 MB 92.2 MB
Events in quadrant A2,301,083648,201
Events in quadrant B2,724,933658,330
Events in quadrant C2,446,154632,253
Events in quadrant D2,421,233625,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105521
B0118587
C0107121
D0110501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5205120.230548%
B5202340.653595%
C5205450.864553%
D5205160.307397%

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 5205 5205 0 0 0.00% 0.00%
B 5205 5205 7 7 0.13% 0.13%
C 5205 5205 0 0 0.00% 0.00%
D 5205 5205 5 5 0.10% 0.10%

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 0 226 5092 37.1 598 584 121.5
A 3 137 4429 31.64 598 584 121.5
A 12 194 4427 31.62 598 584 121.5
B 10 245 170492 1472.57 600 582 115.4
B 0 189 90281 777.4 600 582 115.4
B 7 220 39040 333.31 600 582 115.4
C 3 233 101131 747.96 577 580 134.4
C 14 238 89675 662.74 577 580 134.4
C 5 218 5059 33.32 577 580 134.4
D 1 52 90141 632.58 582 564 141.6
D 10 70 30386 210.6 582 564 141.6
D 11 241 27304 188.83 582 564 141.6

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