ASTROSAT CZTI

Data Quality Report

Orbit 35814

Creation date: 2022-05-19T13:03:29.615735
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/AS1A09_146T01_9000005142_35814cztM0_level2.evt modeM0/AS1A09_146T01_9000005142_35814cztM0_level2_quad_clean.evt
Size (bytes)389,692,80079,326,720
Size371.6 MB 75.7 MB
Events in quadrant A2,485,423525,150
Events in quadrant B2,881,688519,585
Events in quadrant C2,748,476509,873
Events in quadrant D3,343,368493,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105763
B0118282
C0110642
D0133022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504730.059441%
B5047921.822865%
C50471122.219140%
D50471062.100258%

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 7140 5048 0 0 0.00% 0.00%
B 7140 5048 71 71 0.99% 1.41%
C 7140 5048 80 80 1.12% 1.58%
D 7140 5048 90 90 1.26% 1.78%

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 157443 1310.48 596 585 119.7
A 15 169 10982 86.86 596 585 119.7
A 13 6 8369 65.03 596 585 119.7
B 5 255 339387 3052.08 588 573 111.0
B 5 172 73154 653.82 588 573 111.0
B 0 213 46502 413.73 588 573 111.0
C 0 10 268444 2017.04 579 583 132.8
C 15 214 210598 1581.45 579 583 132.8
C 12 251 4660 30.7 579 583 132.8
D 2 153 298039 2105.33 584 571 141.3
D 2 250 239969 1694.34 584 571 141.3
D 8 195 138398 975.47 584 571 141.3

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