ASTROSAT CZTI

Data Quality Report

Orbit 37956

Creation date: 2024-06-27T21:46:37.828625
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_082T01_9000005356_37956cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37956cztM0_level2_quad_clean.evt
Size (bytes)396,944,64095,002,560
Size378.6 MB 90.6 MB
Events in quadrant A2,808,681628,650
Events in quadrant B2,693,549645,493
Events in quadrant C2,748,990653,047
Events in quadrant D3,438,874607,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113313
B0108392
C0109752
D0133372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4877200.410088%
B4877911.865901%
C4877551.127742%
D4877470.963707%

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 7030 4878 6 6 0.09% 0.12%
B 7030 4878 59 59 0.84% 1.21%
C 7030 4878 51 51 0.73% 1.05%
D 7030 4878 51 51 0.73% 1.05%

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 339826 2826.35 600 590 120.0
A 15 222 110794 918.17 600 590 120.0
A 13 6 10062 78.92 600 590 120.0
B 5 172 285436 2560.23 592 579 111.3
B 5 184 44016 390.4 592 579 111.3
B 4 232 19559 170.59 592 579 111.3
C 15 214 222853 1658.27 586 591 134.0
C 0 10 151266 1124.17 586 591 134.0
C 15 159 60161 444.44 586 591 134.0
D 1 52 601491 4206.12 586 571 142.9
D 7 223 198705 1386.83 586 571 142.9
D 9 49 116074 808.46 586 571 142.9

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