ASTROSAT CZTI

Data Quality Report

Orbit 36207

Creation date: 2022-06-10T09:22:19.666801
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_080T02_9000005176_36207cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36207cztM0_level2_quad_clean.evt
Size (bytes)713,831,04062,596,800
Size680.8 MB 59.7 MB
Events in quadrant A2,970,266424,754
Events in quadrant B3,442,242421,395
Events in quadrant C11,313,315254,243
Events in quadrant D3,513,256401,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120963
B0138112
C0375022
D0141092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5611150.267332%
B56111833.261451%
C5611333859.490287%
D56111723.065407%

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 7104 5612 3 3 0.04% 0.05%
B 7104 5612 149 149 2.10% 2.66%
C 7103 5610 3029 3029 42.64% 53.99%
D 7104 5612 149 149 2.10% 2.66%

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 15 223 198344 1502.22 641 626 131.6
A 10 83 182273 1380.12 641 626 131.6
A 8 144 68308 514.24 641 626 131.6
B 5 172 799312 6509.19 631 613 122.7
B 0 190 60194 485.57 631 613 122.7
B 0 229 26487 210.87 631 613 122.7
C 4 254 8716546 87723.1 424 427 99.4
C 15 208 621941 6255.21 424 427 99.4
C 15 214 181011 1817.48 424 427 99.4
D 12 6 600660 3883.95 622 602 154.5
D 13 171 139611 899.75 622 602 154.5
D 2 250 135731 874.64 622 602 154.5

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