ASTROSAT CZTI

Data Quality Report

Orbit 36491

Creation date: 2022-06-28T15:50:15.010995
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/AS1A11_049T04_9000005210_36491cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36491cztM0_level2_quad_clean.evt
Size (bytes)460,474,56090,129,600
Size439.1 MB 86.0 MB
Events in quadrant A2,792,125609,598
Events in quadrant B3,853,964589,934
Events in quadrant C2,952,725601,358
Events in quadrant D3,993,578563,893

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114233
B0146702
C0118852
D0153212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520470.134512%
B52043897.475019%
C5204891.710223%
D52041472.824750%

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 7147 5205 2 2 0.03% 0.04%
B 7147 5205 289 289 4.04% 5.55%
C 7147 5205 38 38 0.53% 0.73%
D 7147 5205 131 131 1.83% 2.52%

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 10 83 192790 1457.9 663 652 131.8
A 13 6 15848 115.3 663 652 131.8
A 7 3 10543 75.05 663 652 131.8
B 5 172 1071462 8924.58 635 622 120.0
B 4 171 79880 660.55 635 622 120.0
B 5 255 76988 636.45 635 622 120.0
C 0 10 248014 1707.07 633 639 144.9
C 15 214 225337 1550.58 633 639 144.9
C 0 207 8088 51.4 633 639 144.9
D 12 227 745602 4899.23 637 622 152.1
D 13 249 207947 1363.44 637 622 152.1
D 2 153 181977 1192.65 637 622 152.1

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