ASTROSAT CZTI

Data Quality Report

Orbit 21895

Creation date: 2024-06-27T18:33:34.413839
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/AS1A07_041T01_9000003234_21895cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21895cztM0_level2_quad_clean.evt
Size (bytes)886,435,200162,878,400
Size845.4 MB 155.3 MB
Events in quadrant A6,067,1491,017,491
Events in quadrant B6,432,9881,033,839
Events in quadrant C6,336,1781,013,406
Events in quadrant D7,138,493979,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266043
B0273393
C0273523
D0301063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128612071.609517%
B128612782.161574%
C128624473.475354%
D128623953.071062%

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 14326 12861 4 4 0.03% 0.03%
B 14326 12861 37 37 0.26% 0.29%
C 14327 12862 91 91 0.64% 0.71%
D 14327 12862 210 210 1.47% 1.63%

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 5 16 63812 200.77 1540 1504 310.3
A 6 16 32776 100.77 1540 1504 310.3
A 4 2 27127 82.56 1540 1504 310.3
B 0 197 120870 404.62 1537 1497 295.0
B 0 190 118104 395.25 1537 1497 295.0
B 3 64 83222 277.01 1537 1497 295.0
C 10 22 334045 952.13 1480 1488 349.3
C 14 238 231554 658.69 1480 1488 349.3
C 13 61 10377 25.45 1480 1488 349.3
D 7 238 940372 2379.24 1481 1445 394.6
D 2 136 327397 825.96 1481 1445 394.6
D 1 52 138312 346.82 1481 1445 394.6

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