ASTROSAT CZTI

Data Quality Report

Orbit 37476

Creation date: 2024-06-27T21:40:29.441277
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_027T01_9000005324_37476cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37476cztM0_level2_quad_clean.evt
Size (bytes)416,171,520101,059,200
Size396.9 MB 96.4 MB
Events in quadrant A3,367,937675,768
Events in quadrant B2,814,990701,674
Events in quadrant C3,019,221681,622
Events in quadrant D3,056,925645,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135193
B0116212
C0120022
D0125072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5071360.709919%
B5071881.735358%
C50711713.372116%
D50711432.819957%

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 7073 5072 28 28 0.40% 0.55%
B 7073 5072 59 59 0.83% 1.16%
C 7073 5072 164 164 2.32% 3.23%
D 7073 5072 124 124 1.75% 2.44%

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 15 222 574743 4919.47 584 574 116.7
A 10 83 270807 2315.35 584 574 116.7
A 6 10 81288 691.56 584 574 116.7
B 5 255 261021 2333.89 588 572 111.6
B 0 213 85017 756.71 588 572 111.6
B 5 172 83410 742.31 588 572 111.6
C 14 254 338403 2554.86 573 578 132.2
C 0 10 217723 1642.2 573 578 132.2
C 15 214 215224 1623.3 573 578 132.2
D 13 249 544355 4004.99 565 552 135.8
D 12 227 86626 633.92 565 552 135.8
D 2 153 68527 500.62 565 552 135.8

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