ASTROSAT CZTI

Data Quality Report

Orbit 27872

Creation date: 2024-06-27T19:45:25.649632
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/AS1A10_002T05_9000004024_27872cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27872cztM0_level2_quad_clean.evt
Size (bytes)987,344,640146,721,600
Size941.6 MB 139.9 MB
Events in quadrant A6,018,056927,069
Events in quadrant B7,258,560900,238
Events in quadrant C7,294,270876,975
Events in quadrant D8,469,415857,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261250
B0296140
C0299630
D0339640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12753520.407747%
B127532301.803497%
C127532592.030895%
D127535524.328393%

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 14073 12754 2 2 0.01% 0.02%
B 14073 12753 94 94 0.67% 0.74%
C 14073 12754 42 42 0.30% 0.33%
D 14073 12754 464 464 3.30% 3.64%

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 0 13 31140 94.57 1544 1512 313.3
A 13 248 26554 79.93 1544 1512 313.3
A 13 254 22529 67.08 1544 1512 313.3
B 10 245 1099472 3747.23 1523 1480 293.0
B 0 190 85085 285.33 1523 1480 293.0
B 0 230 54584 181.23 1523 1480 293.0
C 3 233 1083999 3128.44 1474 1482 346.0
C 14 238 234192 672.52 1474 1482 346.0
C 15 208 154498 442.21 1474 1482 346.0
D 1 52 2282440 6475.08 1478 1443 352.3
D 2 250 470461 1331.4 1478 1443 352.3
D 2 234 57826 160.05 1478 1443 352.3

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