ASTROSAT CZTI

Data Quality Report

Orbit 53021

Creation date: 2025-07-17T16:18:46.560559
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/AS1C09_011T07_9000006488_53021cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53021cztM0_level2_quad_clean.evt
Size (bytes)1,095,471,36055,218,240
Size1.0 GB 52.7 MB
Events in quadrant A14,841,78621,798
Events in quadrant B3,369,245609,245
Events in quadrant C13,099,058201,151
Events in quadrant D8,765,026409,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481621
B0145061
C0431241
D0303231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166600097.307817%
B61662794.524813%
C6167422468.493595%
D6166168127.262407%

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 7245 6165 5686 5686 78.48% 92.23%
B 7246 6166 148 148 2.04% 2.40%
C 7246 6166 4026 4026 55.56% 65.29%
D 7246 6166 1578 1578 21.78% 25.59%

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 9 191 12840365 201295.39 249 244 63.8
A 7 206 741847 11626.16 249 244 63.8
A 0 8 61922 966.93 249 244 63.8
B 10 44 594267 4431.9 627 606 134.0
B 4 81 53506 394.92 627 606 134.0
B 7 252 50239 370.53 627 606 134.0
C 1 241 8184216 69278.59 426 420 118.1
C 15 224 2299397 19461.62 426 420 118.1
C 9 38 400409 3386.04 426 420 118.1
D 12 17 3269786 20974.05 543 517 155.9
D 2 62 1524688 9778.35 543 517 155.9
D 15 78 687687 4408.55 543 517 155.9

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