ASTROSAT CZTI

Data Quality Report

Orbit 15425

Creation date: 2024-06-27T17:08:20.626572
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/AS1T02_076T01_9000002274_15425cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15425cztM0_level2_quad_clean.evt
Size (bytes)396,642,24060,909,120
Size378.3 MB 58.1 MB
Events in quadrant A2,535,589382,595
Events in quadrant B2,987,797384,742
Events in quadrant C2,337,335390,928
Events in quadrant D3,844,122367,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104741
B0118591
C095501
D0145521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45251292.850829%
B45251473.248619%
C4525150.331492%
D45252695.944751%

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 4526 4526 67 67 1.48% 1.48%
B 4526 4526 89 89 1.97% 1.97%
C 4526 4526 8 8 0.18% 0.18%
D 4526 4526 249 249 5.50% 5.50%

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 14 238 383160 3494.81 534 522 109.5
A 14 237 82259 746.54 534 522 109.5
A 9 143 13787 121.16 534 522 109.5
B 10 245 722327 7179.06 530 517 100.5
B 4 142 81681 807.25 530 517 100.5
B 0 197 27400 267.38 530 517 100.5
C 3 233 283326 2363.7 521 524 119.6
C 10 22 12739 102.09 521 524 119.6
C 3 9 5482 41.44 521 524 119.6
D 13 122 1428851 11417.44 513 497 125.1
D 5 222 363055 2898.08 513 497 125.1
D 7 38 38934 307.24 513 497 125.1

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