ASTROSAT CZTI

Data Quality Report

Orbit 33581

Creation date: 2024-06-27T20:50:24.532453
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_060T01_9000004808_33581cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33581cztM0_level2_quad_clean.evt
Size (bytes)567,648,00075,337,920
Size541.4 MB 71.8 MB
Events in quadrant A3,358,108496,874
Events in quadrant B4,151,112504,485
Events in quadrant C4,605,466474,346
Events in quadrant D4,720,032435,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131393
B0157002
C0175302
D0177182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52731162.199886%
B527354010.240850%
C52732424.589418%
D52734538.590935%

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 7246 5274 115 115 1.59% 2.18%
B 7246 5273 412 412 5.69% 7.81%
C 7246 5274 212 212 2.93% 4.02%
D 7246 5274 500 500 6.90% 9.48%

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 15 169 814838 6313.05 655 646 129.0
A 13 254 8799 63.22 655 646 129.0
A 3 137 6240 43.37 655 646 129.0
B 5 172 1502572 12465.16 633 619 120.5
B 15 222 67499 555.06 633 619 120.5
B 0 190 27913 226.52 633 619 120.5
C 3 233 1427476 9844.43 627 635 144.9
C 0 10 274031 1886.29 627 635 144.9
C 14 254 223619 1538.47 627 635 144.9
D 15 0 1316768 8885.01 609 593 148.1
D 8 195 453765 3059.2 609 593 148.1
D 2 249 224792 1513.49 609 593 148.1

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