ASTROSAT CZTI

Data Quality Report

Orbit 36493

Creation date: 2022-06-28T19:10:58.037224
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_36493cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36493cztM0_level2_quad_clean.evt
Size (bytes)419,627,52093,637,440
Size400.2 MB 89.3 MB
Events in quadrant A2,681,769647,225
Events in quadrant B3,400,483628,740
Events in quadrant C2,936,658615,195
Events in quadrant D3,352,611596,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109053
B0132472
C0116582
D0132632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4955100.201816%
B49552234.500505%
C49551342.704339%
D49551603.229062%

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 7078 4956 0 0 0.00% 0.00%
B 7078 4956 154 154 2.18% 3.11%
C 7078 4956 97 97 1.37% 1.96%
D 7078 4956 114 114 1.61% 2.30%

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 198848 1594.27 630 621 124.3
A 13 6 34081 269.11 630 621 124.3
A 13 254 7627 56.35 630 621 124.3
B 5 172 814765 7130.0 603 588 114.2
B 5 255 106624 928.59 603 588 114.2
B 0 189 31915 274.34 603 588 114.2
C 0 10 337965 2496.62 587 593 135.1
C 15 214 213763 1577.5 587 593 135.1
C 6 255 92774 682.16 587 593 135.1
D 12 227 281948 1952.79 600 585 144.1
D 13 249 217626 1506.36 600 585 144.1
D 12 235 100437 693.02 600 585 144.1

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