ASTROSAT CZTI

Data Quality Report

Orbit 20220203_A11_047T01_9000004904_level2

Creation date: 2022-02-05T20:22:00.876634
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_047T01_9000004904cztM0_level2_bc.evt modeM0/AS1A11_047T01_9000004904cztM0_level2_quad_clean.evt
Size (bytes)376,911,360117,262,080
Size359.5 MB 111.8 MB
Events in quadrant A1,476,181814,978
Events in quadrant B1,919,859821,794
Events in quadrant C1,977,877801,527
Events in quadrant D5,579,938647,686

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138430
B0155450
C0151640
D0278730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668290.134690%
B66821402.095181%
C66821151.721042%
D6682128919.290632%

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 10178 6684 0 0 0.00% 0.00%
B 10178 6682 11 11 0.11% 0.16%
C 10178 6683 17 17 0.17% 0.25%
D 10177 6681 671 671 6.59% 10.04%

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 30689 367.05 370 364 82.6
A 13 6 12327 144.8 370 364 82.6
A 13 254 10098 117.82 370 364 82.6
B 5 172 381718 5147.55 370 363 74.1
B 4 251 41508 555.38 370 363 74.1
B 0 229 23939 318.23 370 363 74.1
C 15 214 263462 3195.2 357 354 82.3
C 0 10 201864 2447.15 357 354 82.3
C 14 67 44657 538.02 357 354 82.3
D 7 223 1334494 17271.92 318 308 77.2
D 12 235 969686 12549.24 318 308 77.2
D 10 118 816298 10563.53 318 308 77.2

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